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