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Rel. frost
Last spring frost (0°C) 2 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 237 days 2 Apr – 25 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)
14 – 28 Mar
5-7 wk
2 May
5 wk after
29 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Mar
4-6 wk
19 Apr
3 wk after
29 Mar
1 wk before
Chili pepper
Capsicum annuum
5 Mar – 2 Apr
8-12 wk
28 May
10 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
19 Jan – 2 Feb
5-7 wk
9 Mar
4 wk before
25 Mar
2 wk before
Cucumber
Cucumis sativus
30 Apr – 7 May
3-4 wk
28 May
10 wk after
Florence Fennel
Foeniculum vulgare
23 – 30 Apr
4-5 wk
28 May
10 wk after
13 May
6 wk after
Butter bean
Phaseolus lunatus
Season too short
15 – 22 Apr
3-4 wk
13 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Jan – 5 Feb
8-12 wk
2 Apr
Vid frost
15 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
20 Mar
2 wk before
Sweetcorn
Zea mays
Season too short
7 – 14 Apr
3-4 wk
5 May
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 Apr
3-4 wk
2 May
5 wk after
15 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
19 Jan – 2 Feb
5-7 wk
9 Mar
4 wk before
25 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
30 Jan – 13 Feb
4-6 wk
13 Mar
3 wk before
13 Mar
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Jan – 2 Feb
5-7 wk
9 Mar
4 wk before
29 Mar
1 wk before
Pumpkin
Cucurbita pepo
30 Apr – 7 May
3-4 wk
28 May
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 Apr
3-4 wk
2 May
5 wk after
15 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Mar
4-6 wk
19 Apr
3 wk after
Lettuce
Lactuca sativa
26 Feb – 5 Mar
3-4 wk
26 Mar
1 wk before
29 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Feb
4-6 wk
26 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
18 Jan – 1 Feb
2-4 wk
15 Feb
7 wk before
15 Feb
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
27 Feb
5 wk before
Spinach
Spinacia oleracea
18 – 25 Feb
3-4 wk
18 Mar
3 wk before
20 Mar
3 wk before
Sweet potato
Ipomoea batatas
20 Apr – 4 May
4-6 wk
1 Jun
11 wk after
Tomato
Solanum lycopersicum
25 Mar – 8 Apr
6-8 wk
20 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
22 Apr – 6 May
2-4 wk
20 May
8 wk after
13 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Mar
4-6 wk
19 Apr
3 wk after
Pea
Pisum sativum
18 – 25 Feb
3-4 wk
18 Mar
3 wk before
29 Mar
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
24 Mar – 7 Apr
4-6 wk
5 May
5 wk after
Lemon balm
Melissa officinalis
22 Jan – 5 Feb
8-10 wk
2 Apr
Vid frost
27 Apr
4 wk after
Dill
Anethum graveolens
29 Mar
1 wk before
Chives
Allium schoenoprasum
12 – 26 Jan
6-8 wk
9 Mar
4 wk before
29 Mar
1 wk before
Spearmint
Mentha spicata
24 Dec – 21 Jan
8-12 wk
18 Mar
3 wk before
27 Apr
4 wk after
Coriander
Coriandrum sativum
15 Apr
2 wk after
Sage
Salvia officinalis
21 Feb – 7 Mar
8-10 wk
2 May
5 wk after
Thyme
Thymus vulgaris
8 – 22 Feb
8-10 wk
19 Apr
3 wk after
Oregano
Origanum vulgare
11 – 25 Feb
6-8 wk
8 Apr
1 wk after
27 Apr
4 wk after
Parsley
Petroselinum crispum
21 Jan – 4 Feb
6-8 wk
18 Mar
3 wk before
29 Mar
1 wk before
Rosemary
Salvia rosmarinus
24 Jan – 21 Feb
10-14 wk
2 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
11 – 18 May
3-4 wk
8 Jun
10 wk after
Cornflower
Centaurea cyanus
18 Mar
3 wk before
29 Mar
1 wk before
Statice
Limonium sinuatum
11 – 25 Mar
8-10 wk
20 May
8 wk after
Sweet William
Dianthus barbatus
21 Jan – 4 Feb
6-8 wk
18 Mar
3 wk before
10 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
25 Mar – 8 Apr
6-8 wk
20 May
8 wk after
12 Jun
11 wk after
Dahlia
Dahlia × pinnata
20 Mar – 3 Apr
6-8 wk
15 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
4 Feb – 4 Mar
4-8 wk
1 Apr
1 Apr
Foxglove
Digitalis purpurea
7 – 21 Jan
8-10 wk
18 Mar
3 wk before
15 Apr
2 wk after
Busy lizzie
Impatiens walleriana
5 Mar – 2 Apr
8-12 wk
28 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
25 Mar – 8 Apr
6-8 wk
20 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
16 – 30 Apr
4-6 wk
28 May
8 wk after
Chinese lantern
Physalis alkekengi
21 Feb – 7 Mar
8-10 wk
2 May
5 wk after
Love in a mist
Nigella damascena
29 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
25 Mar – 8 Apr
6-8 wk
20 May
8 wk after
12 Jun
11 wk after
Tall verbena
Verbena bonariensis
7 Feb – 7 Mar
8-12 wk
2 May
5 wk after
Cardoon
Cynara cardunculus
Fleece
18 Feb – 18 Mar
8-12 wk
13 May
6 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
5 Mar – 2 Apr
8-12 wk
28 May
8 wk after
Globe amaranth
Gomphrena globosa
2 – 16 Apr
6-8 wk
28 May
10 wk after
Corn poppy
Papaver rhoeas
29 Mar
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Jan
8-12 wk
26 Mar
1 wk before
10 Apr
1 wk after
Flossflower
Ageratum houstonianum
19 Mar – 2 Apr
8-10 wk
28 May
10 wk after
Sweet pea
Lathyrus odoratus
21 Jan – 11 Feb
5-8 wk
18 Mar
3 wk before
Stock
Matthiola incana
29 Jan – 12 Feb
6-8 wk
26 Mar
1 wk before
15 Apr
2 wk after
Wormwood
Artemisia absinthium
21 Jan – 4 Feb
6-8 wk
18 Mar
3 wk before
15 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
16 – 30 Apr
4-6 wk
28 May
10 wk after
Pansy
Viola × wittrockiana
29 Dec – 12 Jan
8-10 wk
9 Mar
4 wk before
10 Apr
1 wk after
Petunia
Petunia
25 Feb – 25 Mar
8-12 wk
20 May
8 wk after
Scabious
Scabiosa atropurpurea
7 – 21 Mar
6-8 wk
2 May
5 wk after
13 May
6 wk after
Zinnia
Zinnia elegans
8 – 22 Apr
4-6 wk
20 May
8 wk after
Common morning glory
Ipomoea purpurea
23 Apr – 7 May
3-5 wk
28 May
10 wk after
Cosmos
Cosmos bipinnatus
8 – 22 Apr
4-6 wk
20 May
8 wk after
13 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
16 Mar – 13 Apr
8-12 wk
8 Jun
10 wk after
Bee balm
Monarda didyma
8 Jan – 5 Feb
8-12 wk
2 Apr
Vid frost
27 Apr
4 wk after
Yarrow
Achillea millefolium
21 Jan – 4 Feb
6-8 wk
18 Mar
3 wk before
15 Apr
2 wk after
Safflower
Carthamus tinctorius
18 Mar
3 wk before
29 Mar
1 wk before
Iceland poppy
Papaver nudicaule
12 – 26 Jan
6-8 wk
9 Mar
4 wk before
25 Mar
2 wk before
Bishop's flower
Ammi majus
2 – 16 Mar
4-6 wk
13 Apr
2 wk after
15 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
5 – 19 Mar
10-12 wk
28 May
8 wk after
Sunflower
Helianthus annuus
22 – 29 Apr
3-4 wk
20 May
8 wk after
27 Apr
4 wk after
China aster
Callistephus chinensis
25 Mar – 8 Apr
6-8 wk
20 May
8 wk after
13 May
6 wk after
Annual phlox
Phlox drummondii
13 – 27 Mar
6-8 wk
8 May
6 wk after
13 May
6 wk after
Hollyhock
Alcea rosea
21 Jan – 4 Feb
6-8 wk
18 Mar
3 wk before
15 Apr
2 wk after
Delphinium
Delphinium elatum
25 Jan – 22 Feb
8-12 wk
19 Apr
3 wk after
27 Apr
4 wk after
African marigold
Tagetes erecta
25 Mar – 8 Apr
6-8 wk
20 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Mar
6-8 wk
2 May
5 wk after
13 May
6 wk after
Woodland sage
Salvia nemorosa
28 Jan – 11 Feb
8-10 wk
8 Apr
1 wk after
27 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
19 Mar – 16 Apr
6-10 wk
28 May
10 wk after
California goldenpoppy
Eschscholzia californica
29 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
11 – 25 Mar
8-10 wk
20 May
8 wk after
Water forget-me-not
Myosotis scorpioides
21 Jan – 4 Feb
6-8 wk
18 Mar
3 wk before
15 Apr
2 wk after
Current date Soon Date passed