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Rel. frost
Last spring frost (0°C) 16 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 253 days 16 Mar – 24 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)
25 Feb – 11 Mar
5-7 wk
15 Apr
5 wk after
12 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Feb – 5 Mar
4-6 wk
2 Apr
3 wk after
12 Mar
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)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
8 Mar
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
26 Apr
6 wk after
Butter bean
Phaseolus lunatus
Season too short
29 Mar – 5 Apr
3-4 wk
26 Apr
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Dec – 19 Jan
8-12 wk
16 Mar
Vid frost
29 Mar
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
3 Mar
2 wk before
Sweetcorn
Zea mays
Season too short
21 – 28 Mar
3-4 wk
18 Apr
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Mar
3-4 wk
15 Apr
5 wk after
29 Mar
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
8 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
13 – 27 Jan
4-6 wk
24 Feb
3 wk before
24 Feb
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
12 Mar
1 wk before
Pumpkin
Cucurbita pepo
13 – 20 Apr
3-4 wk
11 May
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Mar
3-4 wk
15 Apr
5 wk after
29 Mar
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Feb – 5 Mar
4-6 wk
2 Apr
3 wk after
Lettuce
Lactuca sativa
9 – 16 Feb
3-4 wk
9 Mar
1 wk before
12 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Jan – 9 Feb
4-6 wk
9 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
1 – 15 Jan
2-4 wk
29 Jan
7 wk before
29 Jan
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
10 Feb
5 wk before
Spinach
Spinacia oleracea
1 – 8 Feb
3-4 wk
1 Mar
3 wk before
3 Mar
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Apr
4-6 wk
15 May
11 wk after
Tomato
Solanum lycopersicum
8 – 22 Mar
6-8 wk
3 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
5 – 19 Apr
2-4 wk
3 May
8 wk after
26 Apr
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Feb – 5 Mar
4-6 wk
2 Apr
3 wk after
Pea
Pisum sativum
1 – 8 Feb
3-4 wk
1 Mar
3 wk before
12 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
7 – 21 Mar
4-6 wk
18 Apr
5 wk after
Lemon balm
Melissa officinalis
5 – 19 Jan
8-10 wk
16 Mar
Vid frost
10 Apr
4 wk after
Dill
Anethum graveolens
12 Mar
1 wk before
Chives
Allium schoenoprasum
26 Dec – 9 Jan
6-8 wk
20 Feb
4 wk before
12 Mar
1 wk before
Spearmint
Mentha spicata
7 Dec – 4 Jan
8-12 wk
1 Mar
3 wk before
10 Apr
4 wk after
Coriander
Coriandrum sativum
29 Mar
2 wk after
Sage
Salvia officinalis
4 – 18 Feb
8-10 wk
15 Apr
5 wk after
Thyme
Thymus vulgaris
22 Jan – 5 Feb
8-10 wk
2 Apr
3 wk after
Oregano
Origanum vulgare
25 Jan – 8 Feb
6-8 wk
22 Mar
1 wk after
10 Apr
4 wk after
Parsley
Petroselinum crispum
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
12 Mar
1 wk before
Rosemary
Salvia rosmarinus
7 Jan – 4 Feb
10-14 wk
15 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
24 Apr – 1 May
3-4 wk
22 May
10 wk after
Cornflower
Centaurea cyanus
1 Mar
3 wk before
12 Mar
1 wk before
Statice
Limonium sinuatum
22 Feb – 8 Mar
8-10 wk
3 May
8 wk after
Sweet William
Dianthus barbatus
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
24 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Mar
6-8 wk
3 May
8 wk after
26 May
11 wk after
Dahlia
Dahlia × pinnata
3 – 17 Mar
6-8 wk
28 Apr
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
18 Jan – 15 Feb
4-8 wk
15 Mar
15 Mar
Foxglove
Digitalis purpurea
21 Dec – 4 Jan
8-10 wk
1 Mar
3 wk before
29 Mar
2 wk after
Busy lizzie
Impatiens walleriana
16 Feb – 16 Mar
8-12 wk
11 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Mar
6-8 wk
3 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
30 Mar – 13 Apr
4-6 wk
11 May
8 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Feb
8-10 wk
15 Apr
5 wk after
Love in a mist
Nigella damascena
12 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Mar
6-8 wk
3 May
8 wk after
26 May
11 wk after
Tall verbena
Verbena bonariensis
21 Jan – 18 Feb
8-12 wk
15 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
1 Feb – 1 Mar
8-12 wk
26 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
12 Mar
1 wk before
Snapdragon
Antirrhinum majus
15 Dec – 12 Jan
8-12 wk
9 Mar
1 wk before
24 Mar
1 wk after
Flossflower
Ageratum houstonianum
2 – 16 Mar
8-10 wk
11 May
10 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Jan
5-8 wk
1 Mar
3 wk before
Stock
Matthiola incana
12 – 26 Jan
6-8 wk
9 Mar
1 wk before
29 Mar
2 wk after
Wormwood
Artemisia absinthium
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Mexican sunflower
Tithonia rotundifolia
30 Mar – 13 Apr
4-6 wk
11 May
10 wk after
Pansy
Viola × wittrockiana
12 – 26 Dec
8-10 wk
20 Feb
4 wk before
24 Mar
1 wk after
Petunia
Petunia
8 Feb – 8 Mar
8-12 wk
3 May
8 wk after
Scabious
Scabiosa atropurpurea
18 Feb – 4 Mar
6-8 wk
15 Apr
5 wk after
26 Apr
6 wk after
Zinnia
Zinnia elegans
22 Mar – 5 Apr
4-6 wk
3 May
8 wk after
Common morning glory
Ipomoea purpurea
6 – 20 Apr
3-5 wk
11 May
10 wk after
Cosmos
Cosmos bipinnatus
22 Mar – 5 Apr
4-6 wk
3 May
8 wk after
26 Apr
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
27 Feb – 27 Mar
8-12 wk
22 May
10 wk after
Bee balm
Monarda didyma
22 Dec – 19 Jan
8-12 wk
16 Mar
Vid frost
10 Apr
4 wk after
Yarrow
Achillea millefolium
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Safflower
Carthamus tinctorius
1 Mar
3 wk before
12 Mar
1 wk before
Iceland poppy
Papaver nudicaule
26 Dec – 9 Jan
6-8 wk
20 Feb
4 wk before
8 Mar
2 wk before
Bishop's flower
Ammi majus
13 – 27 Feb
4-6 wk
27 Mar
2 wk after
29 Mar
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
16 Feb – 2 Mar
10-12 wk
11 May
8 wk after
Sunflower
Helianthus annuus
5 – 12 Apr
3-4 wk
3 May
8 wk after
10 Apr
4 wk after
China aster
Callistephus chinensis
8 – 22 Mar
6-8 wk
3 May
8 wk after
26 Apr
6 wk after
Annual phlox
Phlox drummondii
24 Feb – 10 Mar
6-8 wk
21 Apr
6 wk after
26 Apr
6 wk after
Hollyhock
Alcea rosea
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Delphinium
Delphinium elatum
8 Jan – 5 Feb
8-12 wk
2 Apr
3 wk after
10 Apr
4 wk after
African marigold
Tagetes erecta
8 – 22 Mar
6-8 wk
3 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
18 Feb – 4 Mar
6-8 wk
15 Apr
5 wk after
26 Apr
6 wk after
Woodland sage
Salvia nemorosa
11 – 25 Jan
8-10 wk
22 Mar
1 wk after
10 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
2 – 30 Mar
6-10 wk
11 May
10 wk after
California goldenpoppy
Eschscholzia californica
12 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
22 Feb – 8 Mar
8-10 wk
3 May
8 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Current date Soon Date passed