In cooler regions, try planting summer bulbs outdoors in pots before transferring them--once the soil is warm enough--to your garden bed or border. Most can go in the ground once the possibility of frost has passed. Sun perennials are revered for their versatility, attract pollinators to your landscape and produce countless, lovely blooms for years or even decades. No wonder these are some of the world's most popular flowers! Sun-loving perennials include roses, peonies, irises, daylilies, hibiscus, coneflowers and asters.
These varieties perform best when receiving about hours of direct sunlight per day. Without it, the plants grow poorly, and their blooms, if any emerge, are drab and lifeless.
Some gardeners don't even try to grow anything in the shaded areas of their gardens or yards. That's a shame, because some incredible plant varieties--including those that yield many delicate, colourful blooms--fare well when grown within dark shadows.
We recommend such shade seekers as hellebores, hostas, astilbe, bleeding hearts, toad lilies and ferns. Poor soil can hinder a shade perennial garden more than a lack of sunlight, so be sure to add plenty of organic matter when preparing a new one.
Avoid damaging roots when planting Shade Perennials near trees. Largely because they signal the welcome return of warmer weather, spring blooms not only possess considerable natural beauty, but they also tend to occupy a special place in our hearts. Fall-planted bulbs include tulips, daffodils, hyacinths, alliums and crocus, a small plant that can flower even before the end of winter.
The temperature ranges in each zone and each zone subset are averages of the typical low temperatures you can expect. The temperatures can often dip below the average range during harsh winters and unusual weather patterns. Many zones were placed about a half-zone higher over the map. Many gardeners have questioned these degree changes, thinking perhaps they reflect a warming across the United States. However, The National Gardening Association suggests not only does newer technology allow for more accurate weather mapping, but it also allows weather stations to participate in the mapping by providing data.
Both factors contribute to the degree changes reflected in the newer maps. Obviously, no state falls into just one zone. Most states have multiple hardiness zones that are influenced by topography and climate conditions.
The Zone 8 region covers the coasts from West to East but most states fall in the south. There are 20 states, plus Washington, D. These include:. The temperatures in Zone 8 means the possibility of growing a wide variety of vegetables, fruits, flowers, trees, and other plants.
Choices for vegetable plants and fruit trees are abundant. Palms - Cycads. Aquatic Plants. Plant-Family Abelia. Abies - Firs. Acanthus - Bear's Breeches. Acer - Maples. Achillea - Yarrows. Acorus - Sweet Flags. Actaea - Baneberries. Actinidia - Kiwi. Adiantum - Maidenhair Ferns.
Agapanthus - African Lilies. Agastache - Hyssops. Ageratum - Floss Flowers. Ajuga - Carpet Bugles. Alcea - Hollyhocks. Alchemilla - Lady's Mantle.
Alocasia - Elephant Ears. Alstroemeria - Peruvian Lilies. Amsonia - Bluestar. Anaphalis - Pearly Everlasting. Anemones - Windflowers. Angelonia - Summer Snapdragons. Arctotis - African Daisies. Aronia - Chokeberries. Astrantia - Masterworts. Athyrium - Lady Ferns. Azaleas - Rhododendrons. Baptisia - False Indigo. Berberis - Barberries. Betula - Birches. Brugmansia - Angel's Trumpets. Brunnera - Siberian Bugloss. Buddleja - Butterfly Bush. Buxus - Boxwood. Caladium - Angel Wings.
Calamagrostis - Reed Grass. Callicarpa - Beautyberries. Calluna - Heathers. Camassia - Camas. Campanula - Bellflowers. Campsis - Trumpet Vines. Canna - Canna Lilies. Carex - Sedges. Caryopteris - Bluebeards. Ceanothus - California Lilac. Cedrus - Cedars. Centaurea - Cornflowers. Cercis - Redbuds. Chaenomeles - Flowering Quinces. Chamaecyparis - False Cypress. Chimonanthus - Wintersweets. Chionodoxa - Glory of the Snow.
Cistus - Rock Roses. Cleome - Spider Flowers. Colchicum - Autumn Crocuses. Colocasia - Taro. Convolvulus - Bindweeds. Cornus - Dogwoods. Corydalis - Fumeworts. Corylopsis - Winterhazels. Cotinus - Smoke Trees. Cytisus - Brooms. Delosperma - Ice Plants. Dicentra - Bleeding Hearts. Digitalis - Foxgloves. Diospyros - Persimmons. Dodecatheon - Shooting Stars. Echinacea - Coneflowers. Echinops - Globe Thistles.
Edgeworthia - Paperbush. Epimedium - Barrenworts. Eranthis - Winter Aconites. Eremurus - Foxtail Lilies. Erica and Calluna. Eryngium - Sea Hollies. Erysimum - Wallflowers. Erythronium - Dog Tooth Violets. Eupatorium - Joe-Pye Weeds. Euphorbia - Spurges. Fagus - Beeches. Festuca - Fescues. Fragaria - Strawberries. Gaillardia - Blanket Flowers.
Galanthus - Snowdrops. Gentiana - Gentians. Geranium - Cranesbills. Geum - Avens. Ginkgo - Maidenhair Trees. Gladiolus - Sword Lilies. Hakonechloa - Hakone Grasses. Hamamelis - Witch Hazels. Hedera - Ivy. Helenium - Sneezeweeds. Helianthemum - Rock Roses. Helianthus - Sunflowers. Helleborus - Hellebores. Hemerocallis - Daylilies. Heuchera - Coral Bells. Hippeastrum - Amaryllis.
Hosta - Plantain Lilies. Hyacinthoides - Bluebells. Hyacinthus - Hyacinths. Hypericum - St John's Wort. Ilex - Hollies. Ipheion - Spring Starflowers. Ipomoea - Morning Glories. Iris Ensata - Japanese Irises. Iris Germanica - Bearded Irises. Iris Hollandica - Dutch Irises. Iris Reticulata - Dwarf Irises. Iris Sibirica - Siberian Irises. Iris Spuria - Blue Irises. Iris - Other. Jasminum - Jasmine. Juniperus - Junipers. Kniphofia - Red Hot Pokers. Lagerstroemia - Crape Myrtles. Larix - Larches.
Lathyrus - Sweet Peas. Lavandula - Lavenders. Flowers for Zone 1 should be drought-tolerant and tremendously cold hardy. The most popular growing choices include:. Located in both Alaska and the continental United States, planting Zone 2 features extremely cold average minimum temperatures of between to degrees F. These temperatures can present a growing challenge to many gardeners. High winds and drought conditions are found in both the tundra and plains of Zone 2.
Planting native plants, growing annuals and using creative planting techniques give gardeners a growing advantage. Zone 2 can expect minimum average temperatures of to degrees F Zone 2a has a minimum average temperature of to degrees F Zone 2b has a minimum average temperature of to degrees F Each of the two subzones can experience harsher temperatures depending on weather conditions.
Plants in Zone 2 must be able to withstand extreme cold and high levels of drought. Native plants are best adapted to the environment. Annuals are best suited for this zone, but some perennials can be grown when chosen carefully. There are very few perennial vegetables able to withstand the extreme cold of Zone 2. Although, with added protection, it can be possible to grow asparagus as a perennial.
Look for annual vegetables with a short growing season for the best results. In addition to Zone 1 vegetables, consider planting:. There are a few options for fruit trees in Zone 2. Carefully considering the planting location will help ensure success.
Zone 2 hardy fruit varieties include:. Zone 2 is ideal for growing annual herbs, either replanted or from self-sowing plants. The following herbs are considered cold hardy for Zone Native plants are your best option for tender perennials in Zone 2. However, many gardeners have success by matching plants from similar environments.
Consider planting:. Plant hardiness Zone 3 is found throughout Alaska, the northern portions of the United States and in high altitude areas. This zone features minimum average temperatures of to degrees F. Depending on the geographical location of your growing space, high winds, extreme cold and low moisture may affect growing conditions. Zone 3 can expect minimum average temperatures of to degrees F Zone 3a has a minimum average temperature of to degrees F Zone 3b has a minimum average temperature of to degrees F Each of the two subzones can experience harsher temperatures depending on weather conditions.
The cold minimum average temperatures in Zone 3 limits plant choices to those that have adapted to low temperatures. Most native plants can be grown across the zone, regardless of altitude, as long as growing conditions are similar.
The short growing season limits vegetable and flowering annuals, but you can extend the growing season by starting plants indoors or purchasing from a greenhouse. The short growing season, combined with low soil temperatures, limits vegetable gardens in Zone 3. Adding row covers can help extend the growing season and warm the ground. Plant vegetables that quickly mature to beat early frosts. In addition to Zone 1 and 2 hardy plants, consider planting:.
There are a number of flowers hardy enough to withstand the cold temperatures of Zone 3. Popular choices include:. Planting Zone 4 covers the southern coastal areas of Alaska, northern areas of the United States and high elevations found in the western mountains. These unique climates share minimum average temperatures of between to degrees F. Planting in this zone is less challenging than in colder zones, but the short growing season impacts both vegetables and flower bloom times.
Zone 4 can expect minimum average temperatures of to degrees F Zone 4a has a minimum average temperature of to degrees F Zone 4b has a minimum average temperature of to degrees F Each of the two subzones can experience harsher temperatures depending on weather conditions.
Zone 4 is considered a cool climate suitable for growing plants hardy enough to withstand temperatures well below freezing. To combat the typically short growing season, gardeners can get a head start by starting plants indoors or purchasing starts from a greenhouse. Adding a good layer of mulch and taking preventative winter measures can help some plants survive the cold winters.
As a perennial vegetable, rhubarb is hardy to Zone 4. If started indoors, you can also add the following plants to your vegetable gardens:. Many herbs become hardy to Zone 4 with nothing more than an application of mulch during the winter months, including:.
There are several perennial flowers native to Zone 4 areas that are hardy even in the coldest of winters. With minimum average temperatures between and degrees F, this zone experiences a moderately cold winter. While the growing season is short, you can extend it by using cold frames or using started plants in your annual garden. Zone 5 can expect minimum average temperatures of to degrees F Zone 5a has a minimum average temperature of to degrees F Zone 5b has a minimum average temperature of to degrees F Each of the two subzones can experience harsher temperatures depending on weather conditions.
Zone 5 gardens feature a wide range of environments. From coastal waters and woodlands to the wide plains of the Midwest, plants should not only be cold hardy, but they also need to match the growing environment.
Gardens feature longer growing seasons that result in an increased vegetable harvest and extended blooms in landscaping. Raised beds and row covers help to warm the soil in Zone 5 for a longer growing season.
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