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Rel. frost
Last spring frost (0°C) 14 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 231 days 14 Apr – 1 Dec
Probability that frost is over

90% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
25 Mar – 8 Apr
5-7 wk
13 May
4 wk after
7 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
17 – 31 Mar
4-6 wk
28 Apr
2 wk after
7 Apr
1 wk before
Chili pepper
Capsicum annuum
16 Mar – 13 Apr
8-12 wk
8 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
30 Jan – 13 Feb
5-7 wk
20 Mar
4 wk before
2 Apr
2 wk before
Cucumber
Cucumis sativus
11 – 18 May
3-4 wk
8 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
4 – 11 May
4-5 wk
8 Jun
8 wk after
20 May
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
22 – 29 Apr
3-4 wk
20 May
5 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Jan – 17 Feb
8-12 wk
14 Apr
Vid frost
24 Apr
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 Apr
1 wk after
24 Apr
1 wk after
Sweetcorn
Zea mays
Fleece
2 – 9 May
3-4 wk
30 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Apr
3-4 wk
13 May
4 wk after
24 Apr
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
30 Jan – 13 Feb
5-7 wk
20 Mar
4 wk before
2 Apr
2 wk before
Potato
Solanum tuberosum
8 – 22 Mar
4-6 wk
19 Apr
1 wk after
19 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Jan – 13 Feb
5-7 wk
20 Mar
4 wk before
7 Apr
1 wk before
Pumpkin
Cucurbita pepo
11 – 18 May
3-4 wk
8 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 Apr
3-4 wk
13 May
4 wk after
24 Apr
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 – 31 Mar
4-6 wk
28 Apr
2 wk after
Lettuce
Lactuca sativa
10 – 17 Mar
3-4 wk
7 Apr
1 wk before
7 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Feb – 10 Mar
4-6 wk
7 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
5 – 19 Mar
2-4 wk
2 Apr
2 wk before
2 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
7 Apr
1 wk before
7 Apr
1 wk before
Spinach
Spinacia oleracea
2 – 9 Mar
3-4 wk
30 Mar
2 wk before
27 Mar
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 May
4-6 wk
22 Jun
10 wk after
Tomato
Solanum lycopersicum
5 – 19 Apr
6-8 wk
31 May
7 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
3 – 17 May
2-4 wk
31 May
7 wk after
20 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 – 31 Mar
4-6 wk
28 Apr
2 wk after
Pea
Pisum sativum
2 – 9 Mar
3-4 wk
30 Mar
2 wk before
7 Apr
1 wk before
Current date Soon Date passed

Herbs

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Basil
Ocimum basilicum
Fleece
18 Apr – 2 May
4-6 wk
30 May
7 wk after
Lemon balm
Melissa officinalis
3 – 17 Feb
8-10 wk
14 Apr
Vid frost
5 May
3 wk after
Dill
Anethum graveolens
7 Apr
1 wk before
Chives
Allium schoenoprasum
23 Jan – 6 Feb
6-8 wk
20 Mar
4 wk before
7 Apr
1 wk before
Spearmint
Mentha spicata
5 Jan – 2 Feb
8-12 wk
30 Mar
2 wk before
5 May
3 wk after
Coriander
Coriandrum sativum
24 Apr
1 wk after
Sage
Salvia officinalis
4 – 18 Mar
8-10 wk
13 May
4 wk after
Thyme
Thymus vulgaris
17 Feb – 3 Mar
8-10 wk
28 Apr
2 wk after
Oregano
Origanum vulgare
23 Feb – 9 Mar
6-8 wk
20 Apr
1 wk after
5 May
3 wk after
Parsley
Petroselinum crispum
2 – 16 Feb
6-8 wk
30 Mar
2 wk before
7 Apr
1 wk before
Rosemary
Salvia rosmarinus
4 Feb – 4 Mar
10-14 wk
13 May
4 wk after
Current date Soon Date passed

Annual flowers

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Morning glory
Ipomoea tricolor
Fleece
11 – 18 May
3-4 wk
8 Jun
8 wk after
Cornflower
Centaurea cyanus
30 Mar
2 wk before
7 Apr
1 wk before
Statice
Limonium sinuatum
22 Mar – 5 Apr
8-10 wk
31 May
7 wk after
Sweet William
Dianthus barbatus
2 – 16 Feb
6-8 wk
30 Mar
2 wk before
19 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
6-8 wk
31 May
7 wk after
22 Jun
10 wk after
Dahlia
Dahlia × pinnata
30 Mar – 13 Apr
6-8 wk
25 May
6 wk after
Dahlia (tubers)
Dahlia × pinnata
10 Mar – 7 Apr
4-8 wk
5 May
3 wk after
5 May
3 wk after
Foxglove
Digitalis purpurea
19 Jan – 2 Feb
8-10 wk
30 Mar
2 wk before
24 Apr
1 wk after
Busy lizzie
Impatiens walleriana
16 Mar – 13 Apr
8-12 wk
8 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
6-8 wk
31 May
7 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
19 Apr – 3 May
4-6 wk
31 May
7 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Mar
8-10 wk
13 May
4 wk after
Love in a mist
Nigella damascena
7 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
5 – 19 Apr
6-8 wk
31 May
7 wk after
22 Jun
10 wk after
Tall verbena
Verbena bonariensis
18 Feb – 18 Mar
8-12 wk
13 May
4 wk after
Cardoon
Cynara cardunculus
Fleece
24 Feb – 24 Mar
8-12 wk
19 May
5 wk after
Regal-foxtail
Ptilotus nobilis
16 Mar – 13 Apr
8-12 wk
8 Jun
8 wk after
Globe amaranth
Gomphrena globosa
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
Corn poppy
Papaver rhoeas
7 Apr
1 wk before
Snapdragon
Antirrhinum majus
13 Jan – 10 Feb
8-12 wk
7 Apr
1 wk before
19 Apr
1 wk after
Flossflower
Ageratum houstonianum
30 Mar – 13 Apr
8-10 wk
8 Jun
8 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Feb
5-8 wk
30 Mar
2 wk before
Stock
Matthiola incana
10 – 24 Feb
6-8 wk
7 Apr
1 wk before
24 Apr
1 wk after
Wormwood
Artemisia absinthium
2 – 16 Feb
6-8 wk
30 Mar
2 wk before
24 Apr
1 wk after
Mexican sunflower
Tithonia rotundifolia
27 Apr – 11 May
4-6 wk
8 Jun
8 wk after
Pansy
Viola × wittrockiana
9 – 23 Jan
8-10 wk
20 Mar
4 wk before
19 Apr
1 wk after
Petunia
Petunia
8 Mar – 5 Apr
8-12 wk
31 May
7 wk after
Scabious
Scabiosa atropurpurea
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
20 May
5 wk after
Zinnia
Zinnia elegans
19 Apr – 3 May
4-6 wk
31 May
7 wk after
Common morning glory
Ipomoea purpurea
4 – 18 May
3-5 wk
8 Jun
8 wk after
Cosmos
Cosmos bipinnatus
19 Apr – 3 May
4-6 wk
31 May
7 wk after
20 May
5 wk after
Scarlet milkweed
Asclepias curassavica
20 Mar – 17 Apr
8-12 wk
12 Jun
8 wk after
Bee balm
Monarda didyma
20 Jan – 17 Feb
8-12 wk
14 Apr
Vid frost
5 May
3 wk after
Yarrow
Achillea millefolium
2 – 16 Feb
6-8 wk
30 Mar
2 wk before
24 Apr
1 wk after
Safflower
Carthamus tinctorius
30 Mar
2 wk before
7 Apr
1 wk before
Iceland poppy
Papaver nudicaule
23 Jan – 6 Feb
6-8 wk
20 Mar
4 wk before
2 Apr
2 wk before
Bishop's flower
Ammi majus
13 – 27 Mar
4-6 wk
24 Apr
1 wk after
24 Apr
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
8 – 22 Mar
10-12 wk
31 May
7 wk after
Sunflower
Helianthus annuus
3 – 10 May
3-4 wk
31 May
7 wk after
5 May
3 wk after
China aster
Callistephus chinensis
5 – 19 Apr
6-8 wk
31 May
7 wk after
20 May
5 wk after
Annual phlox
Phlox drummondii
24 Mar – 7 Apr
6-8 wk
19 May
5 wk after
20 May
5 wk after
Hollyhock
Alcea rosea
2 – 16 Feb
6-8 wk
30 Mar
2 wk before
24 Apr
1 wk after
Delphinium
Delphinium elatum
3 Feb – 3 Mar
8-12 wk
28 Apr
2 wk after
5 May
3 wk after
African marigold
Tagetes erecta
5 – 19 Apr
6-8 wk
31 May
7 wk after
Black-eyed Susan
Rudbeckia hirta
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
20 May
5 wk after
Woodland sage
Salvia nemorosa
9 – 23 Feb
8-10 wk
20 Apr
1 wk after
5 May
3 wk after
Black-eyed susan vine
Thunbergia alata
30 Mar – 27 Apr
6-10 wk
8 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
7 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
8-10 wk
31 May
7 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Feb
6-8 wk
30 Mar
2 wk before
24 Apr
1 wk after
Current date Soon Date passed