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Rel. frost
Last spring frost (0°C) 20 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 213 days 20 Apr – 19 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)
3 – 17 Apr
5-7 wk
22 May
5 wk after
14 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
4-6 wk
10 May
3 wk after
14 Apr
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
8 Mar – 5 Apr
8-12 wk
31 May
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
31 Jan – 14 Feb
5-7 wk
21 Mar
4 wk before
7 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
18 – 25 May
3-4 wk
15 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
26 Apr – 3 May
4-5 wk
31 May
6 wk after
3 May
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
3 – 10 May
3-4 wk
31 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Jan – 23 Feb
8-12 wk
20 Apr
Vid frost
3 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
3 May
2 wk after
3 May
2 wk after
Sweetcorn
Zea mays
Fleece
8 – 15 May
3-4 wk
5 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
24 Apr – 1 May
3-4 wk
22 May
5 wk after
3 May
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
31 Jan – 14 Feb
5-7 wk
21 Mar
4 wk before
7 Apr
2 wk before
Potato
Solanum tuberosum
14 – 28 Mar
4-6 wk
25 Apr
1 wk after
25 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Jan – 14 Feb
5-7 wk
21 Mar
4 wk before
14 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
18 – 25 May
3-4 wk
15 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Apr – 1 May
3-4 wk
22 May
5 wk after
3 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
4-6 wk
10 May
3 wk after
Lettuce
Lactuca sativa
14 – 21 Mar
3-4 wk
11 Apr
1 wk before
14 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Feb – 14 Mar
4-6 wk
11 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Mar
2-4 wk
7 Apr
2 wk before
7 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 Apr
1 wk before
14 Apr
1 wk before
Spinach
Spinacia oleracea
3 – 10 Mar
3-4 wk
31 Mar
3 wk before
31 Mar
3 wk before
Sweet potato
Ipomoea batatas
22 May – 5 Jun
4-6 wk
3 Jul
11 wk after
Tomato
Solanum lycopersicum
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
18 May – 1 Jun
2-4 wk
15 Jun
8 wk after
31 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
4-6 wk
10 May
3 wk after
Pea
Pisum sativum
3 – 10 Mar
3-4 wk
31 Mar
3 wk before
14 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
24 Apr – 8 May
4-6 wk
5 Jun
7 wk after
Lemon balm
Melissa officinalis
9 – 23 Feb
8-10 wk
20 Apr
Vid frost
16 May
4 wk after
Dill
Anethum graveolens
14 Apr
1 wk before
Chives
Allium schoenoprasum
24 Jan – 7 Feb
6-8 wk
21 Mar
4 wk before
14 Apr
1 wk before
Spearmint
Mentha spicata
6 Jan – 3 Feb
8-12 wk
31 Mar
3 wk before
16 May
4 wk after
Coriander
Coriandrum sativum
3 May
2 wk after
Sage
Salvia officinalis
13 – 27 Mar
8-10 wk
22 May
5 wk after
Thyme
Thymus vulgaris
1 – 15 Mar
8-10 wk
10 May
3 wk after
Oregano
Origanum vulgare
4 – 18 Mar
6-8 wk
29 Apr
1 wk after
16 May
4 wk after
Parsley
Petroselinum crispum
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
14 Apr
1 wk before
Rosemary
Salvia rosmarinus
13 Feb – 13 Mar
10-14 wk
22 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
18 – 25 May
3-4 wk
15 Jun
8 wk after
Cornflower
Centaurea cyanus
31 Mar
3 wk before
14 Apr
1 wk before
Statice
Limonium sinuatum
Fleece
22 Mar – 5 Apr
8-10 wk
31 May
6 wk after
Sweet William
Dianthus barbatus
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
25 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
5 – 19 Apr
6-8 wk
31 May
6 wk after
5 Jun
7 wk after
Dahlia
Dahlia × pinnata
13 – 27 Apr
6-8 wk
8 Jun
7 wk after
Dahlia (tubers)
Dahlia × pinnata
21 Mar – 18 Apr
4-8 wk
16 May
4 wk after
16 May
4 wk after
Foxglove
Digitalis purpurea
20 Jan – 3 Feb
8-10 wk
31 Mar
3 wk before
3 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
23 Mar – 20 Apr
8-12 wk
15 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
4 – 18 May
4-6 wk
15 Jun
8 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Mar
8-10 wk
22 May
5 wk after
Love in a mist
Nigella damascena
14 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
5 – 19 Apr
6-8 wk
31 May
6 wk after
5 Jun
7 wk after
Tall verbena
Verbena bonariensis
27 Feb – 27 Mar
8-12 wk
22 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
21 Feb – 21 Mar
8-12 wk
16 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
8 Mar – 5 Apr
8-12 wk
31 May
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
5 – 19 Apr
6-8 wk
31 May
6 wk after
Corn poppy
Papaver rhoeas
14 Apr
1 wk before
Snapdragon
Antirrhinum majus
17 Jan – 14 Feb
8-12 wk
11 Apr
1 wk before
25 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
6 – 20 Apr
8-10 wk
15 Jun
8 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Feb
5-8 wk
31 Mar
3 wk before
Stock
Matthiola incana
14 – 28 Feb
6-8 wk
11 Apr
1 wk before
3 May
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
3 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
19 Apr – 3 May
4-6 wk
31 May
6 wk after
Pansy
Viola × wittrockiana
10 – 24 Jan
8-10 wk
21 Mar
4 wk before
25 Apr
1 wk after
Petunia
Petunia
Fleece
8 Mar – 5 Apr
8-12 wk
31 May
6 wk after
Scabious
Scabiosa atropurpurea
27 Mar – 10 Apr
6-8 wk
22 May
5 wk after
31 May
6 wk after
Zinnia
Zinnia elegans
4 – 18 May
4-6 wk
15 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
11 – 25 May
3-5 wk
15 Jun
8 wk after
Cosmos
Cosmos bipinnatus
Fleece
19 Apr – 3 May
4-6 wk
31 May
6 wk after
16 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
23 Mar – 20 Apr
8-12 wk
15 Jun
8 wk after
Bee balm
Monarda didyma
26 Jan – 23 Feb
8-12 wk
20 Apr
Vid frost
16 May
4 wk after
Yarrow
Achillea millefolium
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
3 May
2 wk after
Safflower
Carthamus tinctorius
31 Mar
3 wk before
14 Apr
1 wk before
Iceland poppy
Papaver nudicaule
24 Jan – 7 Feb
6-8 wk
21 Mar
4 wk before
7 Apr
2 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
4-6 wk
5 May
2 wk after
3 May
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
8 – 22 Mar
10-12 wk
31 May
6 wk after
Sunflower
Helianthus annuus
Fleece
3 – 10 May
3-4 wk
31 May
6 wk after
3 May
2 wk after
China aster
Callistephus chinensis
Fleece
5 – 19 Apr
6-8 wk
31 May
6 wk after
16 May
4 wk after
Annual phlox
Phlox drummondii
5 – 19 Apr
6-8 wk
31 May
6 wk after
31 May
6 wk after
Hollyhock
Alcea rosea
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
3 May
2 wk after
Delphinium
Delphinium elatum
15 Feb – 15 Mar
8-12 wk
10 May
3 wk after
16 May
4 wk after
African marigold
Tagetes erecta
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
27 Mar – 10 Apr
6-8 wk
22 May
5 wk after
31 May
6 wk after
Woodland sage
Salvia nemorosa
18 Feb – 4 Mar
8-10 wk
29 Apr
1 wk after
16 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
6 Apr – 4 May
6-10 wk
15 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
14 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
22 Mar – 5 Apr
8-10 wk
31 May
6 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
3 May
2 wk after
Current date Soon Date passed