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Rel. frost
Last spring frost (0°C) 6 May Frost 1 of 4 years · 20 years of data
Frost-free season 181 days 6 May – 3 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)
Fleece
1 – 15 Apr
5-7 wk
20 May
2 wk after
18 Apr
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
4-6 wk
20 May
2 wk after
29 Apr
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
18 Mar – 15 Apr
8-12 wk
10 Jun
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
21 Feb – 7 Mar
5-7 wk
11 Apr
4 wk before
24 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
25 May – 1 Jun
3-4 wk
22 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
6 – 13 May
4-5 wk
10 Jun
5 wk after
16 May
1 wk after
Butter bean
Phaseolus lunatus
Greenhouse
14 – 21 May
3-4 wk
11 Jun
5 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
8-12 wk
6 May
Vid frost
16 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
1 wk after
16 May
1 wk after
Sweetcorn
Zea mays
Fleece
24 – 31 May
3-4 wk
21 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 May
3-4 wk
4 Jun
4 wk after
16 May
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
21 Feb – 7 Mar
5-7 wk
11 Apr
4 wk before
24 Apr
2 wk before
Potato
Solanum tuberosum
30 Mar – 13 Apr
4-6 wk
11 May
1 wk after
11 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Feb – 7 Mar
5-7 wk
11 Apr
4 wk before
29 Apr
1 wk before
Pumpkin
Cucurbita pepo
2 – 9 Jun
3-4 wk
30 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 May
3-4 wk
4 Jun
4 wk after
16 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
4-6 wk
20 May
2 wk after
Lettuce
Lactuca sativa
1 – 8 Apr
3-4 wk
29 Apr
1 wk before
29 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Mar – 1 Apr
4-6 wk
29 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Mar – 10 Apr
2-4 wk
24 Apr
2 wk before
24 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Apr
1 wk before
29 Apr
1 wk before
Spinach
Spinacia oleracea
24 – 31 Mar
3-4 wk
21 Apr
2 wk before
18 Apr
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
10 wk after
Tomato
Solanum lycopersicum
27 Apr – 11 May
6-8 wk
22 Jun
7 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
25 May – 8 Jun
2-4 wk
22 Jun
7 wk after
11 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
4-6 wk
20 May
2 wk after
Pea
Pisum sativum
24 – 31 Mar
3-4 wk
21 Apr
2 wk before
29 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
10 – 24 May
4-6 wk
21 Jun
7 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
8-10 wk
6 May
Vid frost
27 May
3 wk after
Dill
Anethum graveolens
29 Apr
1 wk before
Chives
Allium schoenoprasum
14 – 28 Feb
6-8 wk
11 Apr
4 wk before
29 Apr
1 wk before
Spearmint
Mentha spicata
27 Jan – 24 Feb
8-12 wk
21 Apr
2 wk before
27 May
3 wk after
Coriander
Coriandrum sativum
16 May
1 wk after
Sage
Salvia officinalis
26 Mar – 9 Apr
8-10 wk
4 Jun
4 wk after
Thyme
Thymus vulgaris
11 – 25 Mar
8-10 wk
20 May
2 wk after
Oregano
Origanum vulgare
17 – 31 Mar
6-8 wk
12 May
1 wk after
27 May
3 wk after
Parsley
Petroselinum crispum
24 Feb – 10 Mar
6-8 wk
21 Apr
2 wk before
29 Apr
1 wk before
Rosemary
Salvia rosmarinus
26 Feb – 26 Mar
10-14 wk
4 Jun
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
Greenhouse
25 May – 1 Jun
3-4 wk
22 Jun
7 wk after
Cornflower
Centaurea cyanus
21 Apr
2 wk before
29 Apr
1 wk before
Statice
Limonium sinuatum
Fleece
1 – 15 Apr
8-10 wk
10 Jun
5 wk after
Sweet William
Dianthus barbatus
24 Feb – 10 Mar
6-8 wk
21 Apr
2 wk before
11 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
15 – 29 Apr
6-8 wk
10 Jun
5 wk after
21 Jun
7 wk after
Dahlia
Dahlia × pinnata
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
Dahlia (tubers)
Dahlia × pinnata
1 – 29 Apr
4-8 wk
27 May
3 wk after
27 May
3 wk after
Foxglove
Digitalis purpurea
10 – 24 Feb
8-10 wk
21 Apr
2 wk before
16 May
1 wk after
Busy lizzie
Impatiens walleriana
7 Apr – 5 May
8-12 wk
30 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
27 Apr – 11 May
6-8 wk
22 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
11 – 25 May
4-6 wk
22 Jun
7 wk after
Chinese lantern
Physalis alkekengi
26 Mar – 9 Apr
8-10 wk
4 Jun
4 wk after
Love in a mist
Nigella damascena
29 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
15 – 29 Apr
6-8 wk
10 Jun
5 wk after
21 Jun
7 wk after
Tall verbena
Verbena bonariensis
12 Mar – 9 Apr
8-12 wk
4 Jun
4 wk after
Cardoon
Cynara cardunculus
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
18 Mar – 15 Apr
8-12 wk
10 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
15 – 29 Apr
6-8 wk
10 Jun
5 wk after
Corn poppy
Papaver rhoeas
29 Apr
1 wk before
Snapdragon
Antirrhinum majus
4 Feb – 4 Mar
8-12 wk
29 Apr
1 wk before
11 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
13 – 27 Apr
8-10 wk
22 Jun
7 wk after
Sweet pea
Lathyrus odoratus
24 Feb – 17 Mar
5-8 wk
21 Apr
2 wk before
Stock
Matthiola incana
4 – 18 Mar
6-8 wk
29 Apr
1 wk before
16 May
1 wk after
Wormwood
Artemisia absinthium
24 Feb – 10 Mar
6-8 wk
21 Apr
2 wk before
16 May
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
29 Apr – 13 May
4-6 wk
10 Jun
5 wk after
Pansy
Viola × wittrockiana
31 Jan – 14 Feb
8-10 wk
11 Apr
4 wk before
11 May
1 wk after
Petunia
Petunia
Fleece
18 Mar – 15 Apr
8-12 wk
10 Jun
5 wk after
Scabious
Scabiosa atropurpurea
9 – 23 Apr
6-8 wk
4 Jun
4 wk after
11 Jun
5 wk after
Zinnia
Zinnia elegans
11 – 25 May
4-6 wk
22 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
18 May – 1 Jun
3-5 wk
22 Jun
7 wk after
Cosmos
Cosmos bipinnatus
Fleece
29 Apr – 13 May
4-6 wk
10 Jun
5 wk after
27 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
30 Mar – 27 Apr
8-12 wk
22 Jun
7 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
8-12 wk
6 May
Vid frost
27 May
3 wk after
Yarrow
Achillea millefolium
24 Feb – 10 Mar
6-8 wk
21 Apr
2 wk before
16 May
1 wk after
Safflower
Carthamus tinctorius
21 Apr
2 wk before
29 Apr
1 wk before
Iceland poppy
Papaver nudicaule
14 – 28 Feb
6-8 wk
11 Apr
4 wk before
24 Apr
2 wk before
Bishop's flower
Ammi majus
4 – 18 Apr
4-6 wk
16 May
1 wk after
16 May
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
18 Mar – 1 Apr
10-12 wk
10 Jun
5 wk after
Sunflower
Helianthus annuus
Fleece
13 – 20 May
3-4 wk
10 Jun
5 wk after
16 May
1 wk after
China aster
Callistephus chinensis
Fleece
15 – 29 Apr
6-8 wk
10 Jun
5 wk after
27 May
3 wk after
Annual phlox
Phlox drummondii
15 – 29 Apr
6-8 wk
10 Jun
5 wk after
11 Jun
5 wk after
Hollyhock
Alcea rosea
24 Feb – 10 Mar
6-8 wk
21 Apr
2 wk before
16 May
1 wk after
Delphinium
Delphinium elatum
25 Feb – 25 Mar
8-12 wk
20 May
2 wk after
27 May
3 wk after
African marigold
Tagetes erecta
27 Apr – 11 May
6-8 wk
22 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
9 – 23 Apr
6-8 wk
4 Jun
4 wk after
11 Jun
5 wk after
Woodland sage
Salvia nemorosa
3 – 17 Mar
8-10 wk
12 May
1 wk after
27 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
13 Apr – 11 May
6-10 wk
22 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
29 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
1 – 15 Apr
8-10 wk
10 Jun
5 wk after
Water forget-me-not
Myosotis scorpioides
24 Feb – 10 Mar
6-8 wk
21 Apr
2 wk before
16 May
1 wk after
Current date Soon Date passed