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Rel. frost
Last spring frost (0°C) 30 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 206 days 30 Apr – 22 Nov
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)
13 – 27 Apr
5-7 wk
1 Jun
5 wk after
24 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
4-6 wk
20 May
3 wk after
24 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
2 – 30 Apr
8-12 wk
25 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Feb
5-7 wk
31 Mar
4 wk before
17 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
28 May – 4 Jun
3-4 wk
25 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
21 – 28 May
4-5 wk
25 Jun
8 wk after
26 May
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
13 – 20 May
3-4 wk
10 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Feb – 5 Mar
8-12 wk
30 Apr
Vid frost
13 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
2 wk after
13 May
2 wk after
Sweetcorn
Zea mays
Fleece
18 – 25 May
3-4 wk
15 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 May
3-4 wk
1 Jun
5 wk after
13 May
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Feb
5-7 wk
31 Mar
4 wk before
17 Apr
2 wk before
Potato
Solanum tuberosum
24 Mar – 7 Apr
4-6 wk
5 May
1 wk after
5 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Feb
5-7 wk
31 Mar
4 wk before
24 Apr
1 wk before
Pumpkin
Cucurbita pepo
8 – 15 Jun
3-4 wk
6 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 May
3-4 wk
1 Jun
5 wk after
13 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
4-6 wk
20 May
3 wk after
Lettuce
Lactuca sativa
24 – 31 Mar
3-4 wk
21 Apr
1 wk before
24 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Mar
4-6 wk
21 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Mar – 3 Apr
2-4 wk
17 Apr
2 wk before
17 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Apr
1 wk before
24 Apr
1 wk before
Spinach
Spinacia oleracea
13 – 20 Mar
3-4 wk
10 Apr
3 wk before
10 Apr
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
11 wk after
Tomato
Solanum lycopersicum
30 Apr – 14 May
6-8 wk
25 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
28 May – 11 Jun
2-4 wk
25 Jun
8 wk after
10 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
4-6 wk
20 May
3 wk after
Pea
Pisum sativum
13 – 20 Mar
3-4 wk
10 Apr
3 wk before
24 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
4 – 18 May
4-6 wk
15 Jun
7 wk after
Lemon balm
Melissa officinalis
19 Feb – 5 Mar
8-10 wk
30 Apr
Vid frost
26 May
4 wk after
Dill
Anethum graveolens
24 Apr
1 wk before
Chives
Allium schoenoprasum
3 – 17 Feb
6-8 wk
31 Mar
4 wk before
24 Apr
1 wk before
Spearmint
Mentha spicata
16 Jan – 13 Feb
8-12 wk
10 Apr
3 wk before
26 May
4 wk after
Coriander
Coriandrum sativum
13 May
2 wk after
Sage
Salvia officinalis
23 Mar – 6 Apr
8-10 wk
1 Jun
5 wk after
Thyme
Thymus vulgaris
11 – 25 Mar
8-10 wk
20 May
3 wk after
Oregano
Origanum vulgare
14 – 28 Mar
6-8 wk
9 May
1 wk after
26 May
4 wk after
Parsley
Petroselinum crispum
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
24 Apr
1 wk before
Rosemary
Salvia rosmarinus
23 Feb – 23 Mar
10-14 wk
1 Jun
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
28 May – 4 Jun
3-4 wk
25 Jun
8 wk after
Cornflower
Centaurea cyanus
10 Apr
3 wk before
24 Apr
1 wk before
Statice
Limonium sinuatum
16 – 30 Apr
8-10 wk
25 Jun
8 wk after
Sweet William
Dianthus barbatus
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
5 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
30 Apr – 14 May
6-8 wk
25 Jun
8 wk after
13 Jul
11 wk after
Dahlia
Dahlia × pinnata
23 Apr – 7 May
6-8 wk
18 Jun
7 wk after
Dahlia (tubers)
Dahlia × pinnata
31 Mar – 28 Apr
4-8 wk
26 May
4 wk after
26 May
4 wk after
Foxglove
Digitalis purpurea
30 Jan – 13 Feb
8-10 wk
10 Apr
3 wk before
13 May
2 wk after
Busy lizzie
Impatiens walleriana
13 Apr – 11 May
8-12 wk
6 Jul
10 wk after
Creeping zinnia
Sanvitalia procumbens
30 Apr – 14 May
6-8 wk
25 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 May
4-6 wk
25 Jun
8 wk after
Chinese lantern
Physalis alkekengi
23 Mar – 6 Apr
8-10 wk
1 Jun
5 wk after
Love in a mist
Nigella damascena
24 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
15 – 29 Apr
6-8 wk
10 Jun
6 wk after
15 Jun
7 wk after
Tall verbena
Verbena bonariensis
9 Mar – 6 Apr
8-12 wk
1 Jun
5 wk after
Cardoon
Cynara cardunculus
Season too short
3 – 31 Mar
8-12 wk
26 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
18 Mar – 15 Apr
8-12 wk
10 Jun
6 wk after
Globe amaranth
Gomphrena globosa
Fleece
30 Apr – 14 May
6-8 wk
25 Jun
8 wk after
Corn poppy
Papaver rhoeas
24 Apr
1 wk before
Snapdragon
Antirrhinum majus
27 Jan – 24 Feb
8-12 wk
21 Apr
1 wk before
5 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
16 – 30 Apr
8-10 wk
25 Jun
8 wk after
Sweet pea
Lathyrus odoratus
13 Feb – 6 Mar
5-8 wk
10 Apr
3 wk before
Stock
Matthiola incana
24 Feb – 10 Mar
6-8 wk
21 Apr
1 wk before
13 May
2 wk after
Wormwood
Artemisia absinthium
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
14 – 28 May
4-6 wk
25 Jun
8 wk after
Pansy
Viola × wittrockiana
20 Jan – 3 Feb
8-10 wk
31 Mar
4 wk before
5 May
1 wk after
Petunia
Petunia
Fleece
18 Mar – 15 Apr
8-12 wk
10 Jun
6 wk after
Scabious
Scabiosa atropurpurea
6 – 20 Apr
6-8 wk
1 Jun
5 wk after
10 Jun
6 wk after
Zinnia
Zinnia elegans
14 – 28 May
4-6 wk
25 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
21 May – 4 Jun
3-5 wk
25 Jun
8 wk after
Cosmos
Cosmos bipinnatus
14 – 28 May
4-6 wk
25 Jun
8 wk after
10 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
2 – 30 Apr
8-12 wk
25 Jun
8 wk after
Bee balm
Monarda didyma
5 Feb – 5 Mar
8-12 wk
30 Apr
Vid frost
26 May
4 wk after
Yarrow
Achillea millefolium
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Safflower
Carthamus tinctorius
10 Apr
3 wk before
24 Apr
1 wk before
Iceland poppy
Papaver nudicaule
3 – 17 Feb
6-8 wk
31 Mar
4 wk before
17 Apr
2 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
4-6 wk
15 May
2 wk after
13 May
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
18 Mar – 1 Apr
10-12 wk
10 Jun
6 wk after
Sunflower
Helianthus annuus
Fleece
13 – 20 May
3-4 wk
10 Jun
6 wk after
13 May
2 wk after
China aster
Callistephus chinensis
Fleece
15 – 29 Apr
6-8 wk
10 Jun
6 wk after
26 May
4 wk after
Annual phlox
Phlox drummondii
15 – 29 Apr
6-8 wk
10 Jun
6 wk after
10 Jun
6 wk after
Hollyhock
Alcea rosea
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Delphinium
Delphinium elatum
25 Feb – 25 Mar
8-12 wk
20 May
3 wk after
26 May
4 wk after
African marigold
Tagetes erecta
30 Apr – 14 May
6-8 wk
25 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 Apr
6-8 wk
1 Jun
5 wk after
10 Jun
6 wk after
Woodland sage
Salvia nemorosa
28 Feb – 14 Mar
8-10 wk
9 May
1 wk after
26 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
16 Apr – 14 May
6-10 wk
25 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
24 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
16 – 30 Apr
8-10 wk
25 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Current date Soon Date passed