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Rel. frost
Last spring frost (0°C) 15 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 186 days 15 Apr – 18 Oct
Probability that frost is over

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