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Rel. frost
Last spring frost (0°C) 8 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 257 days 8 Mar – 20 Nov
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)
17 Feb – 3 Mar
5-7 wk
7 Apr
5 wk after
4 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Feb
4-6 wk
25 Mar
3 wk after
4 Mar
1 wk before
Chili pepper
Capsicum annuum
8 Feb – 8 Mar
8-12 wk
3 May
10 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
25 Dec – 8 Jan
5-7 wk
12 Feb
4 wk before
28 Feb
2 wk before
Cucumber
Cucumis sativus
5 – 12 Apr
3-4 wk
3 May
10 wk after
Florence Fennel
Foeniculum vulgare
29 Mar – 5 Apr
4-5 wk
3 May
10 wk after
18 Apr
6 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 Mar
3-4 wk
18 Apr
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Dec – 11 Jan
8-12 wk
8 Mar
Vid frost
21 Mar
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
23 Feb
2 wk before
Sweetcorn
Zea mays
Season too short
13 – 20 Mar
3-4 wk
10 Apr
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Mar
3-4 wk
7 Apr
5 wk after
21 Mar
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Feb
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
25 Dec – 8 Jan
5-7 wk
12 Feb
4 wk before
28 Feb
2 wk before
Potato
Solanum tuberosum
Season too short
5 – 19 Jan
4-6 wk
16 Feb
3 wk before
16 Feb
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Dec – 8 Jan
5-7 wk
12 Feb
4 wk before
4 Mar
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 Apr
3-4 wk
3 May
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Mar
3-4 wk
7 Apr
5 wk after
21 Mar
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Feb
4-6 wk
25 Mar
3 wk after
Lettuce
Lactuca sativa
1 – 8 Feb
3-4 wk
1 Mar
1 wk before
4 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Jan – 1 Feb
4-6 wk
1 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
24 Dec – 7 Jan
2-4 wk
21 Jan
7 wk before
21 Jan
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
2 Feb
5 wk before
Spinach
Spinacia oleracea
24 – 31 Jan
3-4 wk
21 Feb
3 wk before
23 Feb
3 wk before
Sweet potato
Ipomoea batatas
26 Mar – 9 Apr
4-6 wk
7 May
11 wk after
Tomato
Solanum lycopersicum
28 Feb – 14 Mar
6-8 wk
25 Apr
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
28 Mar – 11 Apr
2-4 wk
25 Apr
8 wk after
18 Apr
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Feb
4-6 wk
25 Mar
3 wk after
Pea
Pisum sativum
24 – 31 Jan
3-4 wk
21 Feb
3 wk before
4 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
27 Feb – 13 Mar
4-6 wk
10 Apr
5 wk after
Lemon balm
Melissa officinalis
28 Dec – 11 Jan
8-10 wk
8 Mar
Vid frost
2 Apr
4 wk after
Dill
Anethum graveolens
4 Mar
1 wk before
Chives
Allium schoenoprasum
18 Dec – 1 Jan
6-8 wk
12 Feb
4 wk before
4 Mar
1 wk before
Spearmint
Mentha spicata
29 Nov – 27 Dec
8-12 wk
21 Feb
3 wk before
2 Apr
4 wk after
Coriander
Coriandrum sativum
21 Mar
2 wk after
Sage
Salvia officinalis
27 Jan – 10 Feb
8-10 wk
7 Apr
5 wk after
Thyme
Thymus vulgaris
14 – 28 Jan
8-10 wk
25 Mar
3 wk after
Oregano
Origanum vulgare
17 – 31 Jan
6-8 wk
14 Mar
1 wk after
2 Apr
4 wk after
Parsley
Petroselinum crispum
27 Dec – 10 Jan
6-8 wk
21 Feb
3 wk before
4 Mar
1 wk before
Rosemary
Salvia rosmarinus
30 Dec – 27 Jan
10-14 wk
7 Apr
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
16 – 23 Apr
3-4 wk
14 May
10 wk after
Cornflower
Centaurea cyanus
21 Feb
3 wk before
4 Mar
1 wk before
Statice
Limonium sinuatum
14 – 28 Feb
8-10 wk
25 Apr
8 wk after
Sweet William
Dianthus barbatus
27 Dec – 10 Jan
6-8 wk
21 Feb
3 wk before
16 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
28 Feb – 14 Mar
6-8 wk
25 Apr
8 wk after
18 May
11 wk after
Dahlia
Dahlia × pinnata
23 Feb – 9 Mar
6-8 wk
20 Apr
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
10 Jan – 7 Feb
4-8 wk
7 Mar
7 Mar
Foxglove
Digitalis purpurea
13 – 27 Dec
8-10 wk
21 Feb
3 wk before
21 Mar
2 wk after
Busy lizzie
Impatiens walleriana
8 Feb – 8 Mar
8-12 wk
3 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
28 Feb – 14 Mar
6-8 wk
25 Apr
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Mar – 5 Apr
4-6 wk
3 May
8 wk after
Chinese lantern
Physalis alkekengi
27 Jan – 10 Feb
8-10 wk
7 Apr
5 wk after
Love in a mist
Nigella damascena
4 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
28 Feb – 14 Mar
6-8 wk
25 Apr
8 wk after
18 May
11 wk after
Tall verbena
Verbena bonariensis
13 Jan – 10 Feb
8-12 wk
7 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
24 Jan – 21 Feb
8-12 wk
18 Apr
6 wk after
Regal-foxtail
Ptilotus nobilis
8 Feb – 8 Mar
8-12 wk
3 May
10 wk after
Globe amaranth
Gomphrena globosa
8 – 22 Mar
6-8 wk
3 May
10 wk after
Corn poppy
Papaver rhoeas
4 Mar
1 wk before
Snapdragon
Antirrhinum majus
7 Dec – 4 Jan
8-12 wk
1 Mar
1 wk before
16 Mar
1 wk after
Flossflower
Ageratum houstonianum
22 Feb – 8 Mar
8-10 wk
3 May
10 wk after
Sweet pea
Lathyrus odoratus
27 Dec – 17 Jan
5-8 wk
21 Feb
3 wk before
Stock
Matthiola incana
4 – 18 Jan
6-8 wk
1 Mar
1 wk before
21 Mar
2 wk after
Wormwood
Artemisia absinthium
27 Dec – 10 Jan
6-8 wk
21 Feb
3 wk before
21 Mar
2 wk after
Mexican sunflower
Tithonia rotundifolia
22 Mar – 5 Apr
4-6 wk
3 May
10 wk after
Pansy
Viola × wittrockiana
4 – 18 Dec
8-10 wk
12 Feb
4 wk before
16 Mar
1 wk after
Petunia
Petunia
31 Jan – 28 Feb
8-12 wk
25 Apr
8 wk after
Scabious
Scabiosa atropurpurea
10 – 24 Feb
6-8 wk
7 Apr
5 wk after
18 Apr
6 wk after
Zinnia
Zinnia elegans
14 – 28 Mar
4-6 wk
25 Apr
8 wk after
Common morning glory
Ipomoea purpurea
29 Mar – 12 Apr
3-5 wk
3 May
10 wk after
Cosmos
Cosmos bipinnatus
14 – 28 Mar
4-6 wk
25 Apr
8 wk after
18 Apr
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
19 Feb – 19 Mar
8-12 wk
14 May
10 wk after
Bee balm
Monarda didyma
14 Dec – 11 Jan
8-12 wk
8 Mar
Vid frost
2 Apr
4 wk after
Yarrow
Achillea millefolium
27 Dec – 10 Jan
6-8 wk
21 Feb
3 wk before
21 Mar
2 wk after
Safflower
Carthamus tinctorius
21 Feb
3 wk before
4 Mar
1 wk before
Iceland poppy
Papaver nudicaule
18 Dec – 1 Jan
6-8 wk
12 Feb
4 wk before
28 Feb
2 wk before
Bishop's flower
Ammi majus
5 – 19 Feb
4-6 wk
19 Mar
2 wk after
21 Mar
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
8 – 22 Feb
10-12 wk
3 May
8 wk after
Sunflower
Helianthus annuus
28 Mar – 4 Apr
3-4 wk
25 Apr
8 wk after
2 Apr
4 wk after
China aster
Callistephus chinensis
28 Feb – 14 Mar
6-8 wk
25 Apr
8 wk after
18 Apr
6 wk after
Annual phlox
Phlox drummondii
16 Feb – 2 Mar
6-8 wk
13 Apr
6 wk after
18 Apr
6 wk after
Hollyhock
Alcea rosea
27 Dec – 10 Jan
6-8 wk
21 Feb
3 wk before
21 Mar
2 wk after
Delphinium
Delphinium elatum
31 Dec – 28 Jan
8-12 wk
25 Mar
3 wk after
2 Apr
4 wk after
African marigold
Tagetes erecta
28 Feb – 14 Mar
6-8 wk
25 Apr
8 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Feb
6-8 wk
7 Apr
5 wk after
18 Apr
6 wk after
Woodland sage
Salvia nemorosa
3 – 17 Jan
8-10 wk
14 Mar
1 wk after
2 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
22 Feb – 22 Mar
6-10 wk
3 May
10 wk after
California goldenpoppy
Eschscholzia californica
4 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
14 – 28 Feb
8-10 wk
25 Apr
8 wk after
Water forget-me-not
Myosotis scorpioides
27 Dec – 10 Jan
6-8 wk
21 Feb
3 wk before
21 Mar
2 wk after
Current date Soon Date passed