Thursday, March 7, 2013

The Best Hardy Plants for New England

Despite the recent snowstorm, our thoughts have been turning to spring which, according to the calendar, arrives on March 20. True spring weather usually takes a while to catch up to the Equinox, so it will be April at least before the ground is soft and dry enough to plant. Still, just before the snow fell, our Snowdrops were in full flower under the beech tree, and the fat budded blooms of Hellebores had already popped through the unfrozen soil. Once the snow melts, they will resume their awakening to flower in early spring, as they always do. Exotic witch hazels (not the late fall-blooming natives) have been in flower since early February, uncoiling their gold, yellow or orange ribbons on warm days, and retracting them at night. Bringing their cut branches into the house persuades them to release their pleasing perfume.

While we can only enjoy (or imagine) these garden delights (Winter flowers? In New Hampshire? Yes, they are possible, and easy) -- it’s not too soon to start planning.

Let’s face it, choosing ornamental plants can be a daunting task for new homeowners and otherwise inexperienced gardeners looking to landscape their yards. For some, a trip to a well-stocked nursery displaying a wide selection of plants can be as confusing as traveling to another country where people speak a different language and whose culture is unfamiliar. Questions of “Is it hardy?” “Will it do well in my yard?” “How much care do I have to give it?” immediately come to mind. It’s no wonder that one often sees the same plants repeated from one house to another, as though each garden was painted from a common palette. Yews and rhododendrons, arborvitae and azaleas, burning bushes and junipers dominate the planted landscapes of New England, because it’s easiest to repeat what is known.

But repetition isn’t always the best way, especially when repeating mistakes. Most of the more familiar plant choices mentioned above grow too large for the average “foundation” planting, and without regular pruning (which is typically more akin to hacking,) will soon cover up first-floor windows and grow over the walkways. And relying on a limited plant palette leads to boringly similar yards.

Better nurseries will have well-trained staff to assist in the process of selecting the right plant for the location, as well as helpful signage and tags. Experienced garden designers are familiar with a much broader range of plants, and know which will not only do best, but also perform and look well with little maintenance, and will arrange them in a distinctive fashion.

Another resource for New England gardeners is to seek out the list of Cary Award-winning plants. The Cary Award program (www.CaryAward.org, a non-profit entity established and administered by the Worcester County Horticultural Society) is bestowed upon hardy woody plants that meet certain criteria: they must be hardy to at least 2 of New England’s Hardiness Zones (but are generally hardy to at least Zone 5 if not colder;) they must offer more than a single season of beauty with an emphasis on having good winter interest; they must have qualities of sustainability (i.e., be easy to grow, not require chemical pest management, and not represent a threat to native flora;) and they must be readily available. Some of them are “problem solving” plants for difficult areas.

This year’s winners of the Cary Award include a low-maintenance rose – Rosa ‘Knock Out’ and the native Yucca filamentosa or Adams Needle, joining 43 trees, shrubs, vines and ground covers that have previously been honored since 1997. A complete list, including information about and photos of individual winners can be found at www.caryaward.org. (Full disclosure: I have been a member of the Cary Award selection committee for many years as one of New Hampshire’s two representatives. Each New England state is similarly represented by professional horticulturists.) We have named future selections up to 2016, with each year’s winners announced at the appropriate time, and are working on plants to nominate and name for 2017 and beyond. Nominations may be made by anybody, and are not limited to those of the committee.

When considering which plants to replace those that may have been damaged in last year’s Halloween snowstorm, or which to choose to enhance your home or garden, be sure to start with Cary Award winners – proven for hardiness, reliability, ease and extended beauty.