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Rel. frost
Last spring frost (0°C) 8 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 253 days 8 Apr – 17 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)
20 Mar – 3 Apr
5-7 wk
8 May
5 wk after
4 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
4 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)
25 Jan – 8 Feb
5-7 wk
15 Mar
4 wk before
31 Mar
2 wk before
Cucumber
Cucumis sativus
6 – 13 May
3-4 wk
3 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
Season too short
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)
Season too short
26 Mar
2 wk before
Sweetcorn
Zea mays
Season too short
13 – 20 Apr
3-4 wk
11 May
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
21 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
25 Jan – 8 Feb
5-7 wk
15 Mar
4 wk before
31 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
5 – 19 Feb
4-6 wk
19 Mar
3 wk before
19 Mar
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Jan – 8 Feb
5-7 wk
15 Mar
4 wk before
4 Apr
1 wk before
Pumpkin
Cucurbita pepo
6 – 13 May
3-4 wk
3 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
21 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Lettuce
Lactuca sativa
4 – 11 Mar
3-4 wk
1 Apr
1 wk before
4 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Feb – 4 Mar
4-6 wk
1 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
24 Jan – 7 Feb
2-4 wk
21 Feb
7 wk before
21 Feb
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
5 Mar
5 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
3-4 wk
24 Mar
3 wk before
26 Mar
3 wk before
Sweet potato
Ipomoea batatas
26 Apr – 10 May
4-6 wk
7 Jun
11 wk after
Tomato
Solanum lycopersicum
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
28 Apr – 12 May
2-4 wk
26 May
8 wk after
19 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Pea
Pisum sativum
24 Feb – 3 Mar
3-4 wk
24 Mar
3 wk before
4 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
Season too short
30 Mar – 13 Apr
4-6 wk
11 May
5 wk after
Lemon balm
Melissa officinalis
28 Jan – 11 Feb
8-10 wk
8 Apr
Vid frost
3 May
4 wk after
Dill
Anethum graveolens
4 Apr
1 wk before
Chives
Allium schoenoprasum
18 Jan – 1 Feb
6-8 wk
15 Mar
4 wk before
4 Apr
1 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
8-12 wk
24 Mar
3 wk before
3 May
4 wk after
Coriander
Coriandrum sativum
21 Apr
2 wk after
Sage
Salvia officinalis
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Thyme
Thymus vulgaris
14 – 28 Feb
8-10 wk
25 Apr
3 wk after
Oregano
Origanum vulgare
17 Feb – 3 Mar
6-8 wk
14 Apr
1 wk after
3 May
4 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
4 Apr
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
10-14 wk
8 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
Fleece
17 – 24 May
3-4 wk
14 Jun
10 wk after
Cornflower
Centaurea cyanus
24 Mar
3 wk before
4 Apr
1 wk before
Statice
Limonium sinuatum
17 – 31 Mar
8-10 wk
26 May
8 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
16 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
18 Jun
11 wk after
Dahlia
Dahlia × pinnata
26 Mar – 9 Apr
6-8 wk
21 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
10 Feb – 10 Mar
4-8 wk
7 Apr
7 Apr
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
3 wk before
21 Apr
2 wk after
Busy lizzie
Impatiens walleriana
11 Mar – 8 Apr
8-12 wk
3 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Love in a mist
Nigella damascena
4 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
18 Jun
11 wk after
Tall verbena
Verbena bonariensis
13 Feb – 13 Mar
8-12 wk
8 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
4 Apr
1 wk before
Snapdragon
Antirrhinum majus
7 Jan – 4 Feb
8-12 wk
1 Apr
1 wk before
16 Apr
1 wk after
Flossflower
Ageratum houstonianum
25 Mar – 8 Apr
8-10 wk
3 Jun
10 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
5-8 wk
24 Mar
3 wk before
Stock
Matthiola incana
4 – 18 Feb
6-8 wk
1 Apr
1 wk before
21 Apr
2 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
6-8 wk
24 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
4 – 18 Jan
8-10 wk
15 Mar
4 wk before
16 Apr
1 wk after
Petunia
Petunia
3 – 31 Mar
8-12 wk
26 May
8 wk after
Scabious
Scabiosa atropurpurea
13 – 27 Mar
6-8 wk
8 May
5 wk after
19 May
6 wk after
Zinnia
Zinnia elegans
14 – 28 Apr
4-6 wk
26 May
8 wk after
Common morning glory
Ipomoea purpurea
29 Apr – 13 May
3-5 wk
3 Jun
10 wk after
Cosmos
Cosmos bipinnatus
14 – 28 Apr
4-6 wk
26 May
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
3 May
4 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Safflower
Carthamus tinctorius
24 Mar
3 wk before
4 Apr
1 wk before
Iceland poppy
Papaver nudicaule
18 Jan – 1 Feb
6-8 wk
15 Mar
4 wk before
31 Mar
2 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
4-6 wk
19 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
28 Apr – 5 May
3-4 wk
26 May
8 wk after
3 May
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
19 May
6 wk after
Annual phlox
Phlox drummondii
19 Mar – 2 Apr
6-8 wk
14 May
6 wk after
19 May
6 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Delphinium
Delphinium elatum
31 Jan – 28 Feb
8-12 wk
25 Apr
3 wk after
3 May
4 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
6-8 wk
8 May
5 wk after
19 May
6 wk after
Woodland sage
Salvia nemorosa
3 – 17 Feb
8-10 wk
14 Apr
1 wk after
3 May
4 wk after
Black-eyed susan vine
Thunbergia alata
25 Mar – 22 Apr
6-10 wk
3 Jun
10 wk after
California goldenpoppy
Eschscholzia californica
4 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
8-10 wk
26 May
8 wk after
Water forget-me-not
Myosotis scorpioides
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Current date Soon Date passed