Drought Tolerant Plants for New Hampshire Landscapes


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Drought Tolerant Plants for New Hampshire Landscapes

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Drought Tolerant Plants for New Hampshire Landscapes

  1. 1. Family, Home & Garden Education Center practical solutions to everyday questions Toll free Info Line 1-877-398-4769 M-F • 9 AM - 2 PMDrought Tolerant Plants for NewHampshire LandscapesBelow-normal precipitation during the period of 1995-2002 resulted in damage to or death of many trees, shrubsand herbaceous plants in New Hampshire and the Northeastern U.S. Even short periods (days to weeks) of hot,dry weather can threaten the health and survival of newly planted woody material, many annual flowers and otherherbaceous plants. Longer drought periods harm established trees, shrubs, vines and perennials as well.Homeowners and landscapers who wish to minimize irrigation needs or who live in areas with potential waterrestrictions should select plants which can tolerate drought.Evergreen plants generally need less water than deciduous trees and shrubs during the growing season, but moreduring the off-season. Broad-leaved evergreens such as rhododendrons, pieris, and mountain laurel, although notconsidered drought-tolerant, grow best in partial shade, offering some protection from dehydration. Needle ever-greens (conifers) as a group have the lowest water requirements. Keep in mind that even drought-tolerant plantsneed water initially to encourage root establishment. Once established, they require little or no water other thannatural rainfall.To get the right plant for the site, consider other characteristics in addition to drought-tolerance. Mature size of thespecies, growth rate, shape and form, site conditions (light patterns, soil characteristics, wind protection), insect ordisease susceptibility, and aesthetics are all important factors in selecting appropriate plant material. Choose plantsthat can withstand New Hampshire’s variable climatic conditions, not just drought.This list of drought-tolerant plants was compiled using several references, which were not always in agreement.The criteria for including plants on this list were: • they are listed as drought tolerant in several sources • they are cold hardy to zone 3 or 4 • they are considered desirable landscape plants (not weedy, invasive, brittle, or pest-prone) • they should be available at local garden centers and nurseriesDeciduous TreesAcer ginnala Amur MapleBetula populifolia Gray BirchCeltis occidentalis Common HackberryCrataegus crusgalli Cockspur HawthornCrataegus phaenopyrum Washington HawthornCrataegus viridis ‘Winter King’ Winter King HawthornFraxinus pennsylvanica Green AshGinkgo biloba Maidenhair TreeGleditsia triacanthos var. inermis Thornless Honey LocustGymnocladus dioicus Kentucky Coffee Tree
  2. 2. Malus spp. (some) CrabappleOstrya virginiana American Hophornbeam, IronwoodPhellodendron amurense Amur CorktreePrunus maackii Amur ChokecherryQuercus macrocarpa Burr OakQuercus rubra Northern Red OakRhus typhina Staghorn SumacRobinia pseudoacacia Black LocustSyringa reticulata Japanese Tree LilacZelkova serrata Japanese ZelkovaDeciduous ShrubsCaragana arborescens Siberian PeashrubChaenomeles speciosa Flowering QuinceClethra alnifolia Summersweet, Sweet PepperbushComptonia peregrina Sweet FernCotoneaster apiculatus Cranberry CotoneasterCotoneaster multiflorus Many-flowered CottoneasterForsythia x intermedia ForsythiaLigustrum spp. PrivetMyrica pennsylvanica Northern BayberryPhysocarpus opulifolius Common NinebarkPotentilla fruticosa Bush CinquefoilRhus aromatica ‘Gro-low’ Gro-low Fragrant SumacRibes alpinum Alpine CurrantRosa rugosa Saltspray RoseSyringa vulgaris Common LilacViburnum dentatum Arrowwood ViburnumViburnum lantana Wayfaringtree ViburnumViburnum lentago Nannyberry Viburnum, SheepberryViburnum opulus European Cranberrybush ViburnumViburnum prunifolium Blackhaw ViburnumEvergreen Trees and ShrubsAbies concolor White firJuniperus chinensis Chinese JuniperJuniperus communis Common JuniperJuniperus scopulorum Rocky Mountain JuniperJuniperus virginiana Eastern RedcedarPicea glauca White SprucePicea pungens Blue SprucePinus banksiana Jack PinePinus cembra Swiss Stone Pine, Arolla PinePinus resinosa Red PinePinus rigida Pitch PinePinus sylvestris Scotch PineGround Covers and VinesArctostaphylos uva-ursi Bearberry, KinnikinickCampsis radicans Trumpet CreeperJuniperus horizontalis Creeping JuniperJuniperus procumbens Japgarden Juniper
  3. 3. Parthenocissus quinquefolia Virginia CreeperWisteria species WisteriaPerennialsAchillea spp. YarrowArtemisia spp. WormwoodAsclepias tuberosa Butterfly MilkweedCoreopsis spp. TickseedEchinacea purpurea Purple ConeflowerEchinops ritro Globe ThistleEryngium spp. Sea HollyEuphorbia spp. SpurgeGaillardia x grandiflora Blanket FlowerGaura lindheimeri Wand FlowerGeranium (several species) CranesbillGypsophila elegans Baby’s BreathHemerocallis hybrids DaylilyHosta plantaginea PlantainlilyIberis sempervirens CandytuftLamium maculatum Spotted Dead NettleLavendula angustifolia LavenderLiatris scariosa GayfeatherMalva alcea MallowNepeta x faassenii CatmintOenothera speciosa Evening PrimrosePhlox subulata Moss Pink, Creeping PhloxRudbeckia spp. Coneflower, Black-eyed SusanSalvia nemerosa SageSedum spp. StonecropSempervivum tectorum Hens-n-chickens, HouseleekSolidago hybrids GoldenrodStachys byzantina Lamb’s EarsVerbascum chaixii MulleinWaldensteinia ternata Barren StrawberryAnnualCosmos bipinnatus CosmosGazania rigens Treasure FlowerGomphrena globosa Globe AmaranthHelichrysum bracteatum StrawflowerIpomoea purpurea Morning-GloryPortulaca grandiflora Moss Rose, Rock RoseSanvitalia procumbens Creeping ZinniaSenecio cineraria Dusty MillerTagetes spp. MarigoldTithonia rotundifolia Mexican SunflowerTropaeolum majus NasturtiumVerbena hybrida VerbenaZinnia elegans Zinnia
  4. 4. Ornamental GrassesFestuca cinerea Blue FescueSchizachyrium scoparium Little BluestemSorghastrum nutans Indian GrassSporobolus heterolepis Prairie Dropseed by Catherine Neal, UNH Extension Ornamental Horticulture Specialist, 5/02 Visit our website: ceinfo.unh.edu UNH Cooperative Extension programs and policies are consistent with pertinent Federal and State laws and regulations on non-discrimination regarding age, color, handicap, national origin, race, religion, sex, sexual orientation, or veterans status.