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Rel. frost
Last spring frost (0°C) 8 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 230 days 8 Apr – 24 Nov
Probability that frost is over

75% = 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)
22 Mar – 5 Apr
5-7 wk
10 May
5 wk after
2 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
17 – 31 Mar
4-6 wk
28 Apr
3 wk after
2 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
11 Mar – 8 Apr
8-12 wk
3 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
19 Jan – 2 Feb
5-7 wk
9 Mar
4 wk before
26 Mar
2 wk before
Cucumber
Cucumis sativus
17 – 24 May
3-4 wk
14 Jun
10 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 Apr – 6 May
4-5 wk
3 Jun
8 wk after
4 May
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
21 – 28 Apr
3-4 wk
19 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Jan – 11 Feb
8-12 wk
8 Apr
Vid frost
21 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 Apr
2 wk after
21 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
26 Apr – 3 May
3-4 wk
24 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
3-4 wk
10 May
5 wk after
21 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
19 Jan – 2 Feb
5-7 wk
9 Mar
4 wk before
26 Mar
2 wk before
Potato
Solanum tuberosum
2 – 16 Mar
4-6 wk
13 Apr
1 wk after
13 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Jan – 2 Feb
5-7 wk
9 Mar
4 wk before
2 Apr
1 wk before
Pumpkin
Cucurbita pepo
17 – 24 May
3-4 wk
14 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
3-4 wk
10 May
5 wk after
21 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 – 31 Mar
4-6 wk
28 Apr
3 wk after
Lettuce
Lactuca sativa
2 – 9 Mar
3-4 wk
30 Mar
1 wk before
2 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 Feb – 2 Mar
4-6 wk
30 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Feb – 12 Mar
2-4 wk
26 Mar
2 wk before
26 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
2 Apr
1 wk before
2 Apr
1 wk before
Spinach
Spinacia oleracea
19 – 26 Feb
3-4 wk
19 Mar
3 wk before
19 Mar
3 wk before
Sweet potato
Ipomoea batatas
10 – 24 May
4-6 wk
21 Jun
11 wk after
Tomato
Solanum lycopersicum
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
6 – 20 May
2-4 wk
3 Jun
8 wk after
19 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 – 31 Mar
4-6 wk
28 Apr
3 wk after
Pea
Pisum sativum
19 – 26 Feb
3-4 wk
19 Mar
3 wk before
2 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
12 – 26 Apr
4-6 wk
24 May
7 wk after
Lemon balm
Melissa officinalis
28 Jan – 11 Feb
8-10 wk
8 Apr
Vid frost
4 May
4 wk after
Dill
Anethum graveolens
2 Apr
1 wk before
Chives
Allium schoenoprasum
12 – 26 Jan
6-8 wk
9 Mar
4 wk before
2 Apr
1 wk before
Spearmint
Mentha spicata
25 Dec – 22 Jan
8-12 wk
19 Mar
3 wk before
4 May
4 wk after
Coriander
Coriandrum sativum
21 Apr
2 wk after
Sage
Salvia officinalis
1 – 15 Mar
8-10 wk
10 May
5 wk after
Thyme
Thymus vulgaris
17 Feb – 3 Mar
8-10 wk
28 Apr
3 wk after
Oregano
Origanum vulgare
20 Feb – 6 Mar
6-8 wk
17 Apr
1 wk after
4 May
4 wk after
Parsley
Petroselinum crispum
22 Jan – 5 Feb
6-8 wk
19 Mar
3 wk before
2 Apr
1 wk before
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
10-14 wk
10 May
5 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
Greenhouse
6 – 13 May
3-4 wk
3 Jun
8 wk after
Cornflower
Centaurea cyanus
19 Mar
3 wk before
2 Apr
1 wk before
Statice
Limonium sinuatum
25 Mar – 8 Apr
8-10 wk
3 Jun
8 wk after
Sweet William
Dianthus barbatus
22 Jan – 5 Feb
6-8 wk
19 Mar
3 wk before
13 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
21 Jun
11 wk after
Dahlia
Dahlia × pinnata
1 – 15 Apr
6-8 wk
27 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
9 Mar – 6 Apr
4-8 wk
4 May
4 wk after
4 May
4 wk after
Foxglove
Digitalis purpurea
8 – 22 Jan
8-10 wk
19 Mar
3 wk before
21 Apr
2 wk after
Busy lizzie
Impatiens walleriana
22 Mar – 19 Apr
8-12 wk
14 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Mar
8-10 wk
10 May
5 wk after
Love in a mist
Nigella damascena
2 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
21 Jun
11 wk after
Tall verbena
Verbena bonariensis
15 Feb – 15 Mar
8-12 wk
10 May
5 wk after
Cardoon
Cynara cardunculus
Fleece
24 Feb – 24 Mar
8-12 wk
19 May
6 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
11 Mar – 8 Apr
8-12 wk
3 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
Corn poppy
Papaver rhoeas
2 Apr
1 wk before
Snapdragon
Antirrhinum majus
5 Jan – 2 Feb
8-12 wk
30 Mar
1 wk before
13 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
25 Mar – 8 Apr
8-10 wk
3 Jun
8 wk after
Sweet pea
Lathyrus odoratus
22 Jan – 12 Feb
5-8 wk
19 Mar
3 wk before
Stock
Matthiola incana
2 – 16 Feb
6-8 wk
30 Mar
1 wk before
21 Apr
2 wk after
Wormwood
Artemisia absinthium
22 Jan – 5 Feb
6-8 wk
19 Mar
3 wk before
21 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
Pansy
Viola × wittrockiana
29 Dec – 12 Jan
8-10 wk
9 Mar
4 wk before
13 Apr
1 wk after
Petunia
Petunia
11 Mar – 8 Apr
8-12 wk
3 Jun
8 wk after
Scabious
Scabiosa atropurpurea
15 – 29 Mar
6-8 wk
10 May
5 wk after
19 May
6 wk after
Zinnia
Zinnia elegans
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
Common morning glory
Ipomoea purpurea
10 – 24 May
3-5 wk
14 Jun
10 wk after
Cosmos
Cosmos bipinnatus
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
19 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
22 Mar – 19 Apr
8-12 wk
14 Jun
10 wk after
Bee balm
Monarda didyma
14 Jan – 11 Feb
8-12 wk
8 Apr
Vid frost
4 May
4 wk after
Yarrow
Achillea millefolium
22 Jan – 5 Feb
6-8 wk
19 Mar
3 wk before
21 Apr
2 wk after
Safflower
Carthamus tinctorius
19 Mar
3 wk before
2 Apr
1 wk before
Iceland poppy
Papaver nudicaule
12 – 26 Jan
6-8 wk
9 Mar
4 wk before
26 Mar
2 wk before
Bishop's flower
Ammi majus
12 – 26 Mar
4-6 wk
23 Apr
2 wk after
21 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Mar
10-12 wk
3 Jun
8 wk after
Sunflower
Helianthus annuus
6 – 13 May
3-4 wk
3 Jun
8 wk after
4 May
4 wk after
China aster
Callistephus chinensis
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
19 May
6 wk after
Annual phlox
Phlox drummondii
24 Mar – 7 Apr
6-8 wk
19 May
6 wk after
19 May
6 wk after
Hollyhock
Alcea rosea
22 Jan – 5 Feb
6-8 wk
19 Mar
3 wk before
21 Apr
2 wk after
Delphinium
Delphinium elatum
3 Feb – 3 Mar
8-12 wk
28 Apr
3 wk after
4 May
4 wk after
African marigold
Tagetes erecta
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
6-8 wk
10 May
5 wk after
19 May
6 wk after
Woodland sage
Salvia nemorosa
6 – 20 Feb
8-10 wk
17 Apr
1 wk after
4 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
25 Mar – 22 Apr
6-10 wk
3 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
2 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
8-10 wk
3 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
22 Jan – 5 Feb
6-8 wk
19 Mar
3 wk before
21 Apr
2 wk after
Current date Soon Date passed