Monthly Archives: February 2017

Holey Moley, Shrew or Vole!

Mole, vole or shrew: ever wonder what the difference is between these pests, or why you should care? All three of these mouse-like creatures may be seen in or around your garden. Identification is important in determining if and how you should control these critters.

Moles

Identification: A mature mole will grow 5-7 inches from snout to tail. Moles have soft, thick, velvety-gray fur, a long, blunt snout and an approximately 1-inch long tail. Their eyes and ears are inconspicuous, hidden under their fur. Their paddle-like front paws are two to three times wider then their rear paws.
Damage: Moles, in search of grubs, beetles and earthworms, burrow in the ground and create tunneling in the lawn and garden. They surface occasionally leaving small hills of loose soil. Moles are solitary, subterranean creatures.
Control: Reduce food supply by controlling grubs in the lawn. Use repellents containing castor oil, or toxic baits placed in the tunnel but out of reach of pets. There are several different styles of mole traps available on the market.

Voles

Identification: Voles, often called meadow mice, are a little larger than moles reaching 5-8 inches long at maturity. Their heads are rounded, their eyes are larger than shrews, their fur is brown, short and smooth, their front paws are about the same width as their rear paws and their tails are about 1 ¾ inches long.
Damage: Voles are herbivores that feed on bulbs, tubers and tender young plants. During the winter, often under the cover of snow, voles will eat surface roots and chew bark from the base of trees and shrubs often causing the plant to girdle and die. Voles, unlike moles and shrews, are social and where you find one, you will find many. Voles will often tunnel in mulch or ground cover above ground leaving surface trails. They sometimes run through old mole tunnels eating plant roots.
Control: Use Thiram-based repellents. Set up mouse traps baited with peanut butter or apple slices. Keep mulch away from tree trunks. Remove snow from the base of trees and shrubs in the winter. Protect young trees by wrapping the lower trunk in wire mesh. Apply predator urine to the area and reapply frequently. Do not use poisons.

Shrews

Identification: A mature shrew will reach 4-5 inches long. Shrews have a thin tail about 7/8 of an inch long, soft, grey, short fur, small beady eyes, small ears and a pointed snout.

Damage: Shrews, like moles, are insectivores. They eat earthworms, grubs and other insects. Shrews, however, are often seen above ground although they tend to use old mole and vole tunnels to get around. Shrews cause no real damage to plants and eat a variety of insects making them beneficial in the landscape and garden.
Control: None necessary.

Not sure what to do about these pesky garden visitors? Stop by to see our complete line of safe, effective pest control products and to ask for expert consultation about which visitors should be welcome in your garden and which ones you should gently encourage to leave.

Trees For Small Spaces

There’s something about putting a tree in the ground that just feels right. In many cases, you start with just a bare trunk with a few branches and then, rather quickly, it begins sprouting new growth. You nurture your new acquisition and each year it increases in height and girth. Finally, one day, you look out the window and a magnificent mature tree is there to greet you!

Trees are a permanent addition to the landscape and therefore require more thought and planning in their selection. When choosing, you will need to consider how much space you have, both above and below the ground, and how large your tree will be at maturity. Large trees should be given the space that they need to grow and thrive. Some have far reaching roots that, when planted in the wrong location, can damage plumbing and underground utilities as well as buckle nearby pavement. Poor planning may also lead to unwanted heavy branches towering dangerously over the roof of your home. To avoid these problems there is a plethora of small to medium trees available that look great and cause no damage when planted close to your house, sidewalk or driveway.

TREES FOR SMALL SPACES

Acer ginnala (Amur Maple)– multi-stemmed, rounded habit, bright red fall color, 15 – 20’h x 15 – 20’w

Acer griseum (Paperbark Maple) – upright, irregular habit, exfoliating bark, excellent red fall color, 20 – 30’h x 15 – 25’w

Acer palmatum (Japanese Maple) – numerous varieties, textures, colors and forms and sizes for every taste and situation

Aesculus pavia (Red Buckeye) – native, red upright flowers in May to early June, flowers attract hummingbirds, 10 – 20’h x 10 – 20’w

Amelanchier canadensis (Shadblow Serviceberry) – native, shrubby, multi-stemmed trunk tree, white flowers in early spring, edible purplish-black fruit, reddish-orange fall color, 6 – 15’h x 15 – 20’w

Betula pendula ‘Youngii’ (Young’s Weeping Birch) – strong weeping tendency, attractive white bark, yellow fall color, 8 – 12’h x 10’w

Carpinus caroliniana (American Hornbeam) – native, multi-stemmed, smooth muscular gray bark, yellow/red/orange fall color, 20 – 30’h x 20 – 30’w

Cercis Canadensis (Eastern Redbud) – native, often multi-stemmed, purple-pink flowers in early spring, 20 – 30’h x 20 – 30’w

Chionanthus viriginicus (Fringe Tree) – native, multi-stemmed, rounded habit, fringe-like white flowers in May to early June, golden-yellow fall color, 12 – 20’h x 12 – 20’w

Cornus alternifolia (Pagoda Dogwood) – native, tiered horizontal branching, white flowers late May – early June, blue-black fruit, persistent coral colored fruit stalks, yellow/reddish/purple fall color, 25’h x 25’w

Cornus florida (Flowering Dogwood) – native, rounded habit, white or pink flowers in mid-May, reddish-purple fall color, 30’h x 30’w

Cornus kousa (Korean Dogwood) – rounded habit, vase shaped branching habit, flowers white aging to pink in early summer, red to purple fall color, 30’h x 30’w

Cornus mas (Cornelian Cherry Dogwood) – native, multi-stemmed, rounded habit, small yellow flowers in early spring, bright red berries in the summer eaten quickly by birds, 20’h x 20’w

Crataegus viridis ‘Winter King’ (Winter King Hawthorn) – native, broad horizontal crown, white flowers in spring, yellow fall color, abundance of small red berries in winter, 15’h x 20’w

Halesia tetraptera (Carolina Silverbell) – native, irregular to rounded and broad shaped, pendulous white bell-shaped flowers in May, Smooth muscle-like bark, 30 – 40’h x 25 – 35’w

Magnolia stellata (Star Magnolia) – Multi-stemmed tree with oval habit, lightly fragrant showy white blooms in early spring, ornamental smooth silver-gray bark, 15 – 20’h x 10 – 15’w

Malus sargentii (Sargent crabapple) – Mounded habit, blooms April through early May, fragrant flowers, pink-red in bud opening to white, very showy deep red fruit held in clusters, 6 – 8’h x 9 – 12’w

Prunus cerasifera ‘Thundercloud’ (Thundercloud Plum) – Rounded habit, deep purple foliage all year around, slightly fragrant pink flowers in the spring, 20’h x 20’w

Stewartia koreana (Korean Stewartia) – pyramidal or oval in shape, white flowers in June and July, long bloom time, excellent fall color orange/yellow/red/purple, 25’h x 12’w

Stewartia ovate (Mountain Stewartia) – slow grower, dense with spreading branches, white flowers in July, orange to red fall color, 10 – 15’h x 10 – 15’w

Stewartia pseudocamellia (Japanese Stewartia) – slow grower, pyramidal, solitary white camellia-like flowers June – August, excellent fall color yellow/red/purple, beautiful exfoliating camouflage bark exposed in the winter, 40’h x 20’w

Styrax japonica (Japanese Snowbell) – horizontal branching, broad flat topped at maturity, hanging white flowers from late May into June, good fall color of yellow with a reddish cast, 20 – 30’h x 20 – 30’w

Syringa reticulate (Japanese Tree Lilac) – stiff spreading branches, fragrant showy white flowers borne in early summer on panicles up to 1′ long and up to 10” wide, 20 – 20’h x 15 – 15’w

Dealing With Winter Damage

It’s early spring – time to survey the damage that winter has produced. In some areas, shrubs may still be hiding under piles of frozen snow, and could be crushed or compacted. Severed tree limbs may lie scattered across the landscape, and bark may be torn and stripped from trunks. It’s difficult to know what to tackle first, but fortunately, much of the damage is easily correctible.

Repairing Winter-Damaged Trees

When surveying and repairing winter damage, start with your trees – they are generally the most valuable additions to your property. As you survey the damage – broken limbs, torn bark, a tilting trunk – ask yourself “Is this tree salvageable or should it be removed?” If the damage is extensive, or you are unsure about how the damage may affect the tree’s overall health or future growth, hire a professional for a consultation. Replacing a severely damaged tree with a younger one, perhaps a type you like even better, may be the best solution.

If a limb is broken somewhere along its length, or damaged beyond repair, employ good pruning practices and saw off the remaining piece at the branch collar, being careful not to cut into the trunk or leave a stub. Sometimes a fallen limb may strip bark off the tree trunk. To repair this damage, cut the ragged edges of the loose bark away from the stripped area to firmly affixed healthy bark. Nature will take care of the rest. Even if the trunk of the tree is split, the tree may still be saved. For large trees, repairing this type of damage usually requires cabling and bracing done by a professional. If the tree is still young, the crotch may be pulled tightly together and tied or taped until the wound eventually heals.

Repairing Winter-Damaged Shrubs

Shrubs can suffer the same damage as trees, including broken limbs and stripped bark. Heavy snowfall can crush smaller shrubs, and larger varieties may have their trunks or centers split from heavy snow or ice accumulation. Most shrubs are resilient, however, and slowly regain their shape as the weather warms. If branches are bent but not broken, you may tie them together to help them along and prevent further damage from late-season storms. Do not tie tightly and remove twine after about a year. Completely broken branches may be pruned away, but take care to maintain the shrub’s form and balance, keeping in mind its growth pattern so it will not look lopsided or ungainly. Again, if the damage is severe, you may need to replace the plant.

The harder the winter is, the more of a beating trees and shrubs will take. With prompt attention in early spring, however, you can easily undo much of the damage and help your landscape recover with ease.

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Trackable Tools

It’s the beginning of a new gardening season. Hopefully you took out last year’s journal in January or February and reviewed your notes on what you wanted to change, improve, experiment with or eliminate from your garden and landscape. Now is the time to begin implementing some of those great ideas, and it starts with having the right tools.

Where Do Your Tools Go?

One common problem in the garden is misplaced tools. We’ve all found hand tools in the spring that were inadvertently thrown in the compost pile or left under a shrub during fall cleanup. Many of us have spent time we didn’t have to spare walking in circles, looking for the shovel that we just had in our hand. It was laid down for a moment and seemed to disappear. Tools can easily disappear on a crowded workbench or in a cluttered shed, or they may even end up in a brush pile or other unlikely location.

When tools are lost, not only are our gardening chores impacted, but the tools can be damaged by exposure or accidental damage if they’re dropped, run over with a mower or otherwise subjected to inadvertent abuse. This can mean we no longer have the tool we need when we need it most, and we have to make a trip to the garden center to replace a tool – using time and money our gardening budget may not have.

Finding Your Tools

Let’s do things differently this year. Let’s save time, money and our precious tools. Resolve to only buy new hand tools with bright colored handles that are easily seen from afar and stand out to be picked up after a long day in the garden. If you already have a good selection of tools that you love and wish to keep track of, simply cover the handle with a bright colored spray paint on a sunny spring day, or wrap the handles with brightly colored tape or other coverings to make them more visible.

Similarly, take the time to clean out and declutter your garden shed, tool boxes and workbenches, making sure there is a safe, appropriate place to store every tool. If each tool has a place, you’ll be able to see at a glance when a tool may be missing and you can find it quickly before you’ve forgotten where you saw or used it last.

You and your garden will be glad you did!

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Putting on Airs: Tillandsias

Looking for something easy to grow? The air plant, Tillandsia, should be on the top of your list. Tillandsia is the largest genus in the Bromeliad family with over 550 species that vary in color, size, texture and shape. In its native habitat, it will attach itself to trees and rocks using its roots. The air plant derives the nutrients and water they need from the air, hence its common name. And guess what? No soil is necessary! This versatile houseplant is not fussy, and when given minimal care, will adapt to most home and office environments.

Light

Place your Tillandsia where it will receive plenty of light but not direct sunlight. Direct sun will dry out the leaves very quickly. Home or office fluorescent lighting works just fine.

Temperature

50 – 90 degrees Fahrenheit

Water

Once a month, soak your air plant in water for about 20 minutes. If the plant is flowering, a delicate rinse would be more appropriate so that the bloom is not damaged. When through soaking, shake off the excess water from the plant and place in an area with good air circulation. In between soaks, spritz it once a week with clean water from a spray bottle. Indoor heat and air conditioning rob moisture from the air. If the leaves of your air plant start to wrinkle or roll, this is a sign of dehydration. If this happens, give the plant a good soak and spritz it more than once a week.

General Maintenance

It is not unusual for the outer leaves of the air plant to dry out and turn brown, simply remove them. If leaf tips dry a bit and turns brown, cut the tip off and continue with regular care. The plant will grow and look just fine.

One final note, Tillandsias have beautiful brilliant blooms but only bloom once in their lifetime. Depending on the species, the bloom may last several days to several months.

Easy, right?

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Biokovo Geranium

“So many Geraniums, so little time.” If this is your motto, we completely understand. There are so many fantastic varieties to choose from, but Geranium ‘Biokovo’ is extraordinary. Allow us to tell you why.

First, a little clarification regarding geraniums. Unlike our tender summer annual, commonly called “geranium” (genus: Pelargonium), true Geraniums are hardy, low growing, groundcover perennials commonly known as Cranesbill. I know, this is confusing, but when you see these two “geraniums”, they look nothing alike and they certainly do not behave similarly.

G. ‘Biokovo’, originally found growing in the mountains of Croatia, is cold hardy and semi-evergreen in hardiness zones 5 – 8. Growing up to a foot tall, this Cranesbill blooms in late spring, May to June, with five-petaled, ¾ inch, white flowers tinged pink. The leaves are slightly hairy, lobed, medium green turning orange-red in the fall and are highly aromatic with a pungent, orange-like scent when bruised.

Produced on spreading rhizomes, G. ‘Biokovo’ is easily grown in well-drained soil with average fertility. It is relatively drought tolerant once established and will thrive planted in either full sun or part shade. Fertilize in early spring. Plant divisions may be done in either spring or fall.

Use ‘Biokova’ in the front of the perennial border and in rock gardens. It will steal the show as a long blooming ground cover or edging plant. There are no serious pest or disease problems associate with this or any of the many other hardy Geraniums. It attracts butterflies and resists deer and rabbits.

No wonder Geranium x cantabrigiense ‘Biokovo’ was the 2015 choice for Perennial Plant of the Year!

Growing Under Black Walnut

If you have a black walnut tree on your property, you know how difficult it can be to find anything that will grow anywhere near this plant.

Black walnuts release a substance called juglone into the soil, which is toxic to many ornamental and edible plants and can stunt their growth significantly – in fact, juglone is used as a herbicide in some areas! A mature black walnut tree can have a toxic zone with up to an 80-foot radius, depending on the tree’s size and age. Every part of the walnut tree contains juglone and this substance remains in the soil long after the tree is cut down, continuing to inhibit anything that may be planted in its place.

Fortunately, there is a wide variety of plants that are less affected by juglone and can still thrive in contaminated soil. When choosing to plant in an area where a black walnut is located or where one once stood, it is safe to make your selection from the lists below.

Vegetables

Beans
Corn
Carrots
Melons
Squash

Fruit

Black Raspberry
Cherry
Nectarine
Peach
Pear
Plum

Annuals

Pot-marigold, Calendula officinalis
Begonia, fibrous cultivars
Morning Glory, Ipomoea
Pansy, Viola
Zinnia species

Perennials

Bugleweed, Ajuga reptans
Hollyhock, Alcea rosea
European Wild Ginger, Asarum europaeum
Astilbe species
Bellflower, Campanula latifolia
Leopard’s-Bane, Doronicum species
Sweet Woodruff, Galium odoratum
Cranesbill, Geranium sanguineum
Common Daylily, Hemerocallis
Coral Bells, Heuchera
Plantain-lily, Hosta
Siberian Iris, Iris sibirica
Balm, Monarda didyma
Sundrops, Oenothera fruticosa
Summer Phlox, Phlox paniculata
Polyanthus Primrose, Primula x polyantha
Lungwort, Pulmonaria species
Showy Sedum, Sedum spectabile
Lamb’s-Ear, Stachys byzantina
Spiderwort, Tradescantia virginiana
Horned Violet, Viola cornuta

Ferns

Crested Wood Fern, Dryopteris cristata
Senstitive Fern, Onoclea sensibilis
Cinnamon Fern, Osmunda cinnamomea

Bulbs

Glory-of-the-Snow, Chionodoxa luciliae
Crocus species
Winter Aconite, Eranthis hyemalis
Snowdrop, Galanthus nivalis
Spanish Bluebell, Hyacinthoides hispanica
Grape Hyacinth, Muscari botryoides
Siberian Squill, Scilla sibirica

Trees

Japanese Maples, Acer palmatum
Eastern Redbud, Cercis canadensis
Canadian Hemlock, Tsuga canadensis

Vines and Shrubs

Euonymus species
Rose of Sharon, Hibiscus syriacus
Honeysuckle, Lonicera species
Virginia Creeper, Parthenocissus quinquefolia
Arborvitaes, Thuja species

Black walnut can be a challenging plant to have in your landscape, but if you understand the unique characteristics of this tree you can easily pair it with other plants that don’t mind its toxic effects.

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Heath or Heather

Often mistaken for one another, heath (Erica) and heather (Calluna) look amazingly similar. To confuse things further, heath is frequently referred to as “spring heather” and some landscapers, garden centers and nurseries may use the names interchangeably. Both types of plants belong to the Ericaceae family, and they share many similarities.

Which is Which?

The key difference between these two popular landscaping plants is that heath blooms from winter to early spring while heather blooms from mid-summer to early fall. Heath features slim, needle-like foliage, while heather’s foliage is flatter and more scale-like. Heath generally only grows to 12 inches tall, while different heather cultivars can range from 8-20 inches tall. With their many similarities for location, soil type and sunlight, however, it is easy to grow these two shrubs together for a much longer and more brilliant flowering season.

Heath and Heather in the Landscape

Both heath and heather are low maintenance, low growing, perennial shrubs that love well-drained, acidic soil, but do not plant them too deeply or their shallow root systems may rot or smother. Heath, or spring heather, has tiny, urn shaped flowers in white, rose or fuchsia and is readily available in early spring. Heather will be more popular later in the season and into early summer, and its bell-like mauve, rose or lavender flowers provide lovely color to the landscape later in the season. Depending on the cultivar, heather’s foliage can range from bright green to golden yellow, reddish or even silvery-gray.

Both plants should be watered well, and mulching around the shrubs will help inhibit weeds and conserve moisture without overwatering. Pruning should be done just after blooming is finished to maintain and shape the plant mounds and discourage overgrowth and legginess.

Heath and heather look terrific planted en masse on a sunny hillside or in the shrub border with other acid-loving plants like azaleas and rhododendrons. They are a welcome addition to the rock garden and can brighten up a dwarf conifer grouping or container garden. Their mounding habit makes the plants easily spill over edges for a naturalized, graceful organic look ideal for cottage gardens and flowing landscape design.

It is important to note, however, that deer can be very attracted to both heath and heather. If these backyard visitors are a problem in your garden or pester your landscape, you may want to take a variety of steps to keep them away from your beautiful shrubs.

Planted together, heath and heather will provide you with a succession of dainty blooms to take you through the entire growing season.

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Sweet Peas, the “Queen of Annuals”

For many of us, it’s the sweet pea that declares, “spring is here!” The colors and sweet fragrance announce the coming of warmer days like no other.

The hardest part of growing sweet peas is choosing from the riot of colors. From the palest of pastels to the most vivid of hues (including stripes), reds, pinks, white, blues, purples, yellows…the list seems endless. Many gardeners buy mixed packages of seeds to avoid the decision.

Look at your choices. Do some of the packets confuse you? Wondering about the difference between “tendril” and “non-tendril?” If the seed package says “tendril” this means the plants have small green growths to attach to a surface or netting to help the vine grow upright. This is how the taller sweet pea vines support themselves as they grow to 6′ (or more!). The varieties with no tendrils remain more compact, making them great in containers. Some of these will trail downward. Other dwarf non-vining varieties act as annual fillers in the mixed garden bed or as borders. What fun!

They’re super easy to grow…just sow the seeds 2″ deep in rich well-draining soil in a full to partial sun location. If the soil is heavy, add compost to improve the texture. Keep the soil moist. Germination should occur within 10-28 days. Continue even and consistent watering. When seedlings are 4-5″ tall, thin to create 5-6″ spacing between plants. To encourage bushy and compact plants, pinch the tips when three sets of leaves form. Generally, do not provide additional fertilizer, otherwise the plants may be lush but the flowers will be sparse.

Sweet Pea Secret! Improve the germination rate, especially of the darker colors, by using nail clippers to nick the seed coat and soak overnight before planting.

If you’re impatient, consider buying seedlings from your garden center. This way you’ll have fragrant sweet pea bouquets a month earlier. Here’s another secret, remove any flowers when transplanting. Yes, this is difficult, but it encourages stronger root growth to produce larger flowers later. You’ll be glad you did it.

Those long-lasting, colorful and fragrant flowers are so sweet in large loose arrangements. They’ll easily last a week if you change the water daily and snip off a bit of the stem. Remember, the best way to extend the sweet pea blooming season is by daily picking early in the day. Definitely, not too difficult.

Seeds for perennial sweet peas are also available. Unlike annual sweet peas, the perennial plant will continue to bloom throughout our warm, humid summers. Annual sweet peas tend to have a gloriously heady scent. This is a feature sorely lacking in the perennial form.

By the way…if you just can’t get enough of your annual sweet peas, grow them again in the autumn. Yes, you can! Why do most of us only grow sweet peas in the spring? Probably because we just don’t think about them in the fall. However, they grow just as well in the cool autumn as the spring. Just remember to provide enough time for flowering before the first frost hits.

Needled Evergreens for a Shady Space

Evergreens are a very important addition to the winter landscape. During the coldest months of the year, when most other plants have been stripped of their leaves or have died back to the ground, evergreens are the stronghold in the garden that provide stunning texture and color, shelter for winter wildlife and the hope of spring for everyone.

Choosing a broad-leafed evergreen for a shady location in the garden is simple. There are so very many to choose from: Rhododendron, azalea, camellia, aucuba and cherry laurel are just the beginning, and there are many more options for any size or shape of shady space. It’s a different story when it comes to hunting for a needled evergreen for that darker corner of the landscape, but it is not impossible.

Popular needled evergreen options for shady spaces include…

Canadian Hemlock (Tsuga canandensis) – Broadly conical and gracefully branched, reaching up to 75 feet high.
Dragon’s Eye Pine (Pinus densiflora ‘Oculus-draconis’) – Part shade. A very unique, asymmetrically shaped pine with a pale halo on the needles.
Dwarf Hinoki Cypress (Chamaecyparis obtuse ‘Nana Gracillis’) – Slowing growing, compact plant with dark green scale-like leaves.
Japanese Cedar (Cryptomeria japonica) – Light shade. Graceful, pyramidal tree with bluish-green scaly foliage and exfoliating cinnamon-colored bark. Growing to 65 feet tall.
Japanese Umbrella Pine (Sciadopitys verticillata) – Light Shade. Needles are thick and succulent, whorled around the branches.
Nootka False Cypress (Chamaecyparis nootkatensis) – Light to part shade. Narrowly pyramidal growing up to 60 feet tall.
Russian Cypress (Microbiota decussate) – Part shade to full shade. Low to the ground forming a rosette of soft, graceful branches. Great ground cover for a shady location.
Spreading English Yew (Taxas bacata repandans) – Part shade to full shade. Three feet high and mounding. Great foundation plant in front of windows or at the back of borders.
Upright Japanese Plum Yew (Cephalotaxus harringtonia ‘Fastigiata’) – Part to full shade. Four foot tall, stiff, linear form.
American White Cedar (Thuja occidentalis) – Light to part shade. Scale-like foliage formed into flat plane fans. Grows up to 40 feet tall.
False Arborvitae (Thujopsis dolabrata) – Light to part shade. Pale green leaf scales with white undersides. Grow up to 65 feet tall.

Not sure which of these evergreens may do well in your landscape? There are different cultivars to explore, and our experts can help you make the best choice for your landscaping needs.

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