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Rel. frost
Last spring frost (0°C) 3 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 262 days 3 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)
12 – 26 Feb
5-7 wk
2 Apr
5 wk after
27 Feb
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Feb
4-6 wk
20 Mar
3 wk after
27 Feb
1 wk before
Chili pepper
Capsicum annuum
3 Feb – 3 Mar
8-12 wk
28 Apr
10 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
20 Dec – 3 Jan
5-7 wk
7 Feb
4 wk before
23 Feb
2 wk before
Cucumber
Cucumis sativus
31 Mar – 7 Apr
3-4 wk
28 Apr
10 wk after
Florence Fennel
Foeniculum vulgare
24 – 31 Mar
4-5 wk
28 Apr
10 wk after
13 Apr
6 wk after
Butter bean
Phaseolus lunatus
Season too short
16 – 23 Mar
3-4 wk
13 Apr
6 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Dec – 6 Jan
8-12 wk
3 Mar
Vid frost
16 Mar
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
18 Feb
2 wk before
Sweetcorn
Zea mays
Season too short
8 – 15 Mar
3-4 wk
5 Apr
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Mar
3-4 wk
2 Apr
5 wk after
16 Mar
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 Feb
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
20 Dec – 3 Jan
5-7 wk
7 Feb
4 wk before
23 Feb
2 wk before
Potato
Solanum tuberosum
Season too short
31 Dec – 14 Jan
4-6 wk
11 Feb
3 wk before
11 Feb
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Dec – 3 Jan
5-7 wk
7 Feb
4 wk before
27 Feb
1 wk before
Pumpkin
Cucurbita pepo
31 Mar – 7 Apr
3-4 wk
28 Apr
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Mar
3-4 wk
2 Apr
5 wk after
16 Mar
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Feb
4-6 wk
20 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)
Season too short
19 Dec – 2 Jan
2-4 wk
16 Jan
7 wk before
16 Jan
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
28 Jan
5 wk before
Spinach
Spinacia oleracea
19 – 26 Jan
3-4 wk
16 Feb
3 wk before
18 Feb
3 wk before
Sweet potato
Ipomoea batatas
21 Mar – 4 Apr
4-6 wk
2 May
11 wk after
Tomato
Solanum lycopersicum
23 Feb – 9 Mar
6-8 wk
20 Apr
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
23 Mar – 6 Apr
2-4 wk
20 Apr
8 wk after
13 Apr
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Feb
4-6 wk
20 Mar
3 wk after
Pea
Pisum sativum
19 – 26 Jan
3-4 wk
16 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
Season too short
22 Feb – 8 Mar
4-6 wk
5 Apr
5 wk after
Lemon balm
Melissa officinalis
23 Dec – 6 Jan
8-10 wk
3 Mar
Vid frost
28 Mar
4 wk after
Dill
Anethum graveolens
27 Feb
1 wk before
Chives
Allium schoenoprasum
13 – 27 Dec
6-8 wk
7 Feb
4 wk before
27 Feb
1 wk before
Spearmint
Mentha spicata
24 Nov – 22 Dec
8-12 wk
16 Feb
3 wk before
28 Mar
4 wk after
Coriander
Coriandrum sativum
16 Mar
2 wk after
Sage
Salvia officinalis
22 Jan – 5 Feb
8-10 wk
2 Apr
5 wk after
Thyme
Thymus vulgaris
9 – 23 Jan
8-10 wk
20 Mar
3 wk after
Oregano
Origanum vulgare
12 – 26 Jan
6-8 wk
9 Mar
1 wk after
28 Mar
4 wk after
Parsley
Petroselinum crispum
22 Dec – 5 Jan
6-8 wk
16 Feb
3 wk before
27 Feb
1 wk before
Rosemary
Salvia rosmarinus
25 Dec – 22 Jan
10-14 wk
2 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
11 – 18 Apr
3-4 wk
9 May
10 wk after
Cornflower
Centaurea cyanus
16 Feb
3 wk before
27 Feb
1 wk before
Statice
Limonium sinuatum
9 – 23 Feb
8-10 wk
20 Apr
8 wk after
Sweet William
Dianthus barbatus
22 Dec – 5 Jan
6-8 wk
16 Feb
3 wk before
11 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
23 Feb – 9 Mar
6-8 wk
20 Apr
8 wk after
13 May
11 wk after
Dahlia
Dahlia × pinnata
18 Feb – 4 Mar
6-8 wk
15 Apr
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
5 Jan – 2 Feb
4-8 wk
2 Mar
2 Mar
Foxglove
Digitalis purpurea
8 – 22 Dec
8-10 wk
16 Feb
3 wk before
16 Mar
2 wk after
Busy lizzie
Impatiens walleriana
3 Feb – 3 Mar
8-12 wk
28 Apr
10 wk after
Creeping zinnia
Sanvitalia procumbens
23 Feb – 9 Mar
6-8 wk
20 Apr
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
17 – 31 Mar
4-6 wk
28 Apr
8 wk after
Chinese lantern
Physalis alkekengi
22 Jan – 5 Feb
8-10 wk
2 Apr
5 wk after
Love in a mist
Nigella damascena
27 Feb
1 wk before
Strawflower
Xerochrysum bracteatum
23 Feb – 9 Mar
6-8 wk
20 Apr
8 wk after
13 May
11 wk after
Tall verbena
Verbena bonariensis
8 Jan – 5 Feb
8-12 wk
2 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
19 Jan – 16 Feb
8-12 wk
13 Apr
6 wk after
Regal-foxtail
Ptilotus nobilis
3 Feb – 3 Mar
8-12 wk
28 Apr
10 wk after
Globe amaranth
Gomphrena globosa
3 – 17 Mar
6-8 wk
28 Apr
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
11 Mar
1 wk after
Flossflower
Ageratum houstonianum
17 Feb – 3 Mar
8-10 wk
28 Apr
10 wk after
Sweet pea
Lathyrus odoratus
22 Dec – 12 Jan
5-8 wk
16 Feb
3 wk before
Stock
Matthiola incana
30 Dec – 13 Jan
6-8 wk
24 Feb
1 wk before
16 Mar
2 wk after
Wormwood
Artemisia absinthium
22 Dec – 5 Jan
6-8 wk
16 Feb
3 wk before
16 Mar
2 wk after
Mexican sunflower
Tithonia rotundifolia
17 – 31 Mar
4-6 wk
28 Apr
10 wk after
Pansy
Viola × wittrockiana
29 Nov – 13 Dec
8-10 wk
7 Feb
4 wk before
11 Mar
1 wk after
Petunia
Petunia
26 Jan – 23 Feb
8-12 wk
20 Apr
8 wk after
Scabious
Scabiosa atropurpurea
5 – 19 Feb
6-8 wk
2 Apr
5 wk after
13 Apr
6 wk after
Zinnia
Zinnia elegans
9 – 23 Mar
4-6 wk
20 Apr
8 wk after
Common morning glory
Ipomoea purpurea
24 Mar – 7 Apr
3-5 wk
28 Apr
10 wk after
Cosmos
Cosmos bipinnatus
9 – 23 Mar
4-6 wk
20 Apr
8 wk after
13 Apr
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
14 Feb – 14 Mar
8-12 wk
9 May
10 wk after
Bee balm
Monarda didyma
9 Dec – 6 Jan
8-12 wk
3 Mar
Vid frost
28 Mar
4 wk after
Yarrow
Achillea millefolium
22 Dec – 5 Jan
6-8 wk
16 Feb
3 wk before
16 Mar
2 wk after
Safflower
Carthamus tinctorius
16 Feb
3 wk before
27 Feb
1 wk before
Iceland poppy
Papaver nudicaule
13 – 27 Dec
6-8 wk
7 Feb
4 wk before
23 Feb
2 wk before
Bishop's flower
Ammi majus
31 Jan – 14 Feb
4-6 wk
14 Mar
2 wk after
16 Mar
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
3 – 17 Feb
10-12 wk
28 Apr
8 wk after
Sunflower
Helianthus annuus
23 – 30 Mar
3-4 wk
20 Apr
8 wk after
28 Mar
4 wk after
China aster
Callistephus chinensis
23 Feb – 9 Mar
6-8 wk
20 Apr
8 wk after
13 Apr
6 wk after
Annual phlox
Phlox drummondii
11 – 25 Feb
6-8 wk
8 Apr
6 wk after
13 Apr
6 wk after
Hollyhock
Alcea rosea
22 Dec – 5 Jan
6-8 wk
16 Feb
3 wk before
16 Mar
2 wk after
Delphinium
Delphinium elatum
26 Dec – 23 Jan
8-12 wk
20 Mar
3 wk after
28 Mar
4 wk after
African marigold
Tagetes erecta
23 Feb – 9 Mar
6-8 wk
20 Apr
8 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Feb
6-8 wk
2 Apr
5 wk after
13 Apr
6 wk after
Woodland sage
Salvia nemorosa
29 Dec – 12 Jan
8-10 wk
9 Mar
1 wk after
28 Mar
4 wk after
Black-eyed susan vine
Thunbergia alata
17 Feb – 17 Mar
6-10 wk
28 Apr
10 wk after
California goldenpoppy
Eschscholzia californica
27 Feb
1 wk before
Painted tongue
Salpiglossis sinuata
9 – 23 Feb
8-10 wk
20 Apr
8 wk after
Water forget-me-not
Myosotis scorpioides
22 Dec – 5 Jan
6-8 wk
16 Feb
3 wk before
16 Mar
2 wk after
Current date Soon Date passed