One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.
A common way of getting a good idea when it's the best time to plant hardy hibiscus is to use the USDA zone info for Zone 8b.
Planting Calendar for Hardy Hibiscus
Frost tolerance for hardy hibiscus: | Very tolerant of frost. |
When to plant: | Up to 7 weeks before last frost. |
Hardy Hibiscus are very cold tolerant which tells us that you can start planting them much earlier than other plants that might not handle the cold.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
Legend | |
---|---|
A good time to plant hardy hibiscus | |
Possibly ok, but a risky time to plant hardy hibiscus | |
Probably not a good time to plant hardy hibiscus |
The earliest that you can plant hardy hibiscus in Zone 8b is February. However, you really should wait until March if you don't want to take any chances.
The last month that you can plant hardy hibiscus and expect a good harvest is probably September. Any later than that and your hardy hibiscus may not have a chance to fully mature. If you are starting your hardy hibiscus indoors then you might be able to get away with starting them a few weeks earlier.
Last Frost Date
The average date of last frost is March 15 in Zone 8b. In the coldest months of winter you should expect an average low temperature of 15°F.
Since the USDA zone info for Zone 8b is just an average the actual date of last frost will vary from year to year. Half of the time in Zone 8b last frost occurs after March 15 so make sure that you are ready to cover your hardy hibiscus if you have a late frost.
USDA Zone Info for Zone 8b
Here is the info for USDA Zone 8b.
Average Date of Last Frost (spring) | March 15 |
Average Date of First Frost (fall) | November 15 |
Lowest Expected Low | 15°F |
Highest Expected Low | 20°F |
This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.
Plants to Grow in Zone 8b
You may be interested in your other planting guides for Zone 8b.
Vegetables
- Artichokes
- Asparagus
- Asparagus lettuce
- Asparagus peas
- Beets
- Bell Peppers
- Bittercress
- Black pepper
- Black radish
- Bok Choi
- Broccoli
- Brussels Sprouts
- Bunching Onions
- Cabbage
- Cantaloupes
- Carrots
- Cauliflower
- Celeriac
- Celery
- Chard
- Chicory
- Chinese cabbage
- Chives
- Corn
- Corn salad
- Cucumbers
- Eggplants
- Endive
- Fennel
- Field Peas
- Garden cress
- Garlic
- Gherkins
- Green beans
- Hamburg root parsley
- Iceberg lettuce
- Indian cress
- Jerusalem artichokes
- Kale
- Kohlrabi
- Leeks
- Lettuce
- Melons
- Mustard greens
- Napa cabbage
- Neeps
- New Zealand spinach
- Okra
- Onions
- Parsnip
- Pea
- Peanut
- Pearl onions
- Peas
- Pole beans
- Potatos
- Pumpkins
- Purslane
- Radicchio
- Radishes
- Red cabbage
- Rhubarb
- Romaine lettuce
- Romanesco
- Runner beans
- Salsify
- Savoy cabbage
- Scallions
- Shallots
- Snap beans
- Snow peas
- Spinach
- Squash
- Strawberries
- String beans
- Sweet corn
- Sweet Potatos
- Tomatos
- Tree onions
- Turnips
- Watercress
- Watermelon
- Welsh onion
- Zucchini
Herbs
Flowers
- Abutilon
- Achillea
- Achimenes
- Aegopodium
- African Daisy
- Ageratum
- Ajuga
- Alstromeria
- Alternanthera
- Alternaria
- Alyssum
- Amaranthus
- Anagallis
- Anchusa
- Anemone
- Angelonia
- Angel's Trumpets
- Arabis
- Arctotis
- Argyranthemum
- Armeria
- Artemesia
- Asparagus Fern
- Asters
- Astilbe
- Aubretia
- Aubrieta
- Aurinia
- Axilflower
- Baby Blue Eyes
- Baby's Breath
- Bachelor Buttons
- Bacopa
- Balloon Flower
- Balsam
- Banana
- Basket of Gold
- Bee Balm
- Begonias
- Bellis
- Bells of Ireland
- Bidens
- Bishop's Weed
- Black Eyed Susans
- Bleeding Hearts
- Bloodleaf
- Blue Lace Flowers
- Blue Throatwort
- Bougainvillea
- Bower Vine
- Brachycome
- Browallia
- Brunfelsia
- Buddha belly plant
- Bunny Tails grass
- Caladium
- Calendula
- Calibrachoa
- California Poppy
- Calla Lily
- Calliopsis
- Campanula
- Candytuft
- Canna
- Cardinal Flower
- Carnation
- Catharanthus
- Celosia
- Centaurea
- Cerastium
- Chocolate Daisy
- Chrysanthemum
- Chrysanthemums
- Chrysocephalum
- Cigar Plant
- Cleome
- Clover
- Coleus
- Columbine
- Common hollyhock
- Copperleaf
- Coral Bells
- Coreopsis
- Cosmos
- Crassula
- Creeping Phlox
- Creeping Zinnia
- Crossandra
- Cuphea
- Dahlberg Daisy
- Dahlia
- Dahlias
- Dallas Fern
- Datura
- Daylily
- Decorative Kale
- Delphinium
- Dianthus
- Diascia
- Dichondra
- Didiscus
- Digitalis
- Dipladenia
- Doronicum
- Dracaena
- Dusty Miller
- Echinacea
- Elephant Ears
- English Daisy
- Erysimum
- Euphorbia
- Evolvulus
- Fanflower
- Felicia Daisy
- Festuca
- Feverfew
- Fiber Optic Grass
- Firebush
- Flax
- Flowering Kale
- Flowering Maple
- Flowering Tobacco
- Flower-of-an-Hour
- Forget-Me-Not
- Fountain Grass
- Four O' Clock
- Four-o-clock flower
- Foxglove
- Fuchsia
- Gaillardia
- Galium
- Garden Mums
- Gayfeather
- Gazania
- Geranium
- Gerbera
- Geum
- Gladiolus
- Gloriosa Daisy
- Gloriosa Lily
- Gomphrena
- Guara
- Gypsophila
- Hamelia
- Hardy Asters
- Hardy Hibiscus
- Helianthemum
- Heliotrope
- Hemerocallis
- Heuchera
- Hibiscus
- Hollyhocks
- Hosta
- Hypericum
- Iberis
- Iceland Poppy
- Impatiens
- Iresene
- Jasmine
- Lantana
- Larkspur
- Lavender
- Lavender Cotton
- Lenten Rose
- Liatris
- Lisianthus
- Lithospermum
- Livingstone Daisy
- Lobelia
- Lotus Vine
- Lunaria
- Lupine
- Lysimachia
- Maltese Cross
- Marguerite Daisy
- Marigold
- Matricaria
- Mecardonia
- Melampodium
- Mexican Feather Grass
- Millet
- Mimulus
- Missouri Primrose
- Monarda
- Money Plant
- Monkey Flower
- Moon Vine
- Morning Glory
- Myosotis
- Napa Valley Fern
- Nasturtium
- Nemesia
- Nicotiana
- Nierembergia
- Nigella
- Nolana
- Oenothera
- Oleander
- Oriental poppies
- Ornamental Grasses
- Osteospermum
- Oxalis
- Painted Daisies
- Painted Tongues
- Pampas Grass
- Pansies
- Pennisetum
- Penstemon
- Pentas
- Peonies
- Perilla
- Periwinkles
- Petunias
- Phlox
- Pincushion Flower
- Platycodon
- Plectranthus
- Polka Dot Plant
- Polygonums
- Poppies
- Portulaca
- Primroses
- Primula
- Purple Bell Vines
- Purple Coneflower
- Purple Rock Cress
- Pyrethrum
- Red Hot Pokers
- Regal Geranium
- Rock Cress
- Roses
- Ruby Grass
- Rudbeckia
- Sagina
- Salpiglossis
- Salvia
- Santolina
- Sanvitalia
- Saxifraga
- Scabiosa
- Scaevola
- Scarlet Pimpernels
- Scarlet Runner Beans
- Schizanthus
- Scutellaria
- Sedum
- Shasta Daisys
- Skullcap
- Snapdragons
- Snow-in Summer
- Statice
- Steirodiscus
- Stocks
- Stoneseed
- Strawflowers
- Streptocarpella
- Sunflowers
- Sutera
- Swan River Daisy
- Sweet Peas
- Sweet Potato Vine
- Sweet Sultan
- Sweet Williams
- Sweet Woodruff
- Tagetes
- Tall Phlox
- Thunbergia
- Tithonia
- Torch Lilys
- Torenia
- Trachelium
- Trailing Portulaca
- Transvaal Daisy
- Trifolium
- Tritoma
- Tropical Hibiscus
- Tropical Water Plants
- Twinspur
- Verbena
- Veronica
- Vinca Vine
- Violas
- Violets
- Xerianthemum
- Yarrow
- Zinnia