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Rel. frost
Last spring frost (0°C) 5 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 260 days 5 Mar – 20 Nov
Probability that frost is over

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