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Rel. frost
Last spring frost (0°C) 28 Feb Frost 9 of 10 years · 20 years of data
Frost-free season 257 days 28 Feb – 12 Nov
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

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Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
10 – 24 Jan
22 Jun
5-7 wk
28 Feb
27 Jul
0 wk
22 Feb
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
17 – 31 Jan
4 Jul
4-6 wk
28 Feb
1 Aug
0 wk
22 Feb
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
30 Dec – 27 Jan
13 Apr
8-12 wk
24 Mar
8 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
10 – 24 Jan
17 Jun
5-7 wk
28 Feb
22 Jul
0 wk
13 Jan
12 Jul
7 wk before
Garden cucumber
Cucumis sativus
Fleece
10 – 17 Mar
7 Jun
3-4 wk
7 Apr
28 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 Mar
14 Jun
4-5 wk
19 Apr
12 Jul
7 wk after
10 Apr
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
1 – 8 Apr
15 May
3-4 wk
29 Apr
5 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Dec – 3 Jan
7 Apr
8-12 wk
28 Feb
2 Jun
0 wk
13 Mar
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Feb
22 Jun
1 wk before
22 Feb
12 Jun
1 wk before
Maize
Zea mays
Fleece
24 Feb – 3 Mar
28 May
3-4 wk
24 Mar
18 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 Feb
11 Jul
3-4 wk
2 Mar
1 Aug
0 wk
13 Mar
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Feb
12 Jul
0 wk
15 Feb
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
10 – 24 Jan
17 Jun
5-7 wk
28 Feb
22 Jul
0 wk
13 Jan
12 Jul
7 wk before
Potato
Solanum tuberosum
22 Jan – 5 Feb
14 Jun
4-6 wk
5 Mar
12 Jul
1 wk after
5 Mar
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Jan
27 Jun
5-7 wk
28 Feb
1 Aug
0 wk
22 Feb
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 Mar
12 Jun
3-4 wk
19 Apr
3 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 Feb
2 Jul
3-4 wk
2 Mar
23 Jul
0 wk
13 Mar
13 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
17 – 31 Jan
29 Jun
4-6 wk
28 Feb
27 Jul
0 wk
Lettuce
Lactuca sativa
31 Jan – 7 Feb
16 Jul
3-4 wk
28 Feb
6 Aug
0 wk
22 Feb
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
17 – 31 Jan
29 Jun
4-6 wk
28 Feb
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Jan – 1 Feb
8 Jun
2-4 wk
15 Feb
22 Jun
2 wk before
15 Feb
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Feb
22 Jun
1 wk before
22 Feb
12 Jun
1 wk before
Spinach
Spinacia oleracea
31 Jan – 7 Feb
31 Jul
3-4 wk
28 Feb
21 Aug
0 wk
8 Feb
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Apr
4-6 wk
13 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
27 Jan – 10 Feb
7 May
6-8 wk
24 Mar
18 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 Mar
14 Jun
2-4 wk
7 Apr
28 Jun
5 wk after
10 Apr
18 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
17 – 31 Jan
29 Jun
4-6 wk
28 Feb
27 Jul
0 wk
Garden pea
Pisum sativum
31 Jan – 7 Feb
1 Jul
3-4 wk
28 Feb
22 Jul
0 wk
22 Feb
12 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
8 – 22 Mar
21 May
4-6 wk
19 Apr
18 Jun
7 wk after
Lemon balm
Melissa officinalis
20 Dec – 3 Jan
27 May
8-10 wk
28 Feb
22 Jul
0 wk
26 Mar
12 Jul
4 wk after
Dill
Anethum graveolens
22 Feb
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
3 – 17 Jan
10 Jun
6-8 wk
28 Feb
22 Jul
0 wk
25 Jan
12 Jul
5 wk before
Spearmint
Mentha spicata
6 Dec – 3 Jan
27 May
8-12 wk
28 Feb
22 Jul
0 wk
26 Mar
12 Jul
4 wk after
Coriander
Coriandrum sativum
28 Feb
21 Aug
0 wk
13 Mar
11 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
20 Dec – 3 Jan
12 May
8-10 wk
28 Feb
7 Jul
0 wk
Common thyme
Thymus vulgaris
Season too short
20 Dec – 3 Jan
17 May
8-10 wk
28 Feb
12 Jul
0 wk
Oregano
Origanum vulgare
3 – 17 Jan
31 May
6-8 wk
28 Feb
12 Jul
0 wk
26 Mar
2 Jul
4 wk after
Parsley
Petroselinum crispum
3 – 17 Jan
31 May
6-8 wk
28 Feb
12 Jul
0 wk
22 Feb
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
24 Nov – 22 Dec
13 Apr
10-14 wk
2 Mar
22 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
22 – 29 Mar
28 May
3-4 wk
19 Apr
18 Jun
7 wk after
Cornflower
Centaurea cyanus
28 Feb
22 Jul
0 wk
22 Feb
12 Jul
1 wk before
Statice
Limonium sinuatum
27 Jan – 10 Feb
30 Apr
8-10 wk
7 Apr
25 Jun
5 wk after
Sweet William
Dianthus barbatus
3 – 17 Jan
6-8 wk
28 Feb
0 wk
5 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
10 – 24 Feb
14 May
6-8 wk
7 Apr
25 Jun
5 wk after
13 May
15 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Feb
24 May
6-8 wk
31 Mar
5 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
29 Jan – 26 Feb
7 Jun
4-8 wk
26 Mar
5 Jul
4 wk after
26 Mar
25 Jun
4 wk after
Foxglove
Digitalis purpurea
20 Dec – 3 Jan
8-10 wk
28 Feb
0 wk
13 Mar
2 wk after
Busy lizzie
Impatiens walleriana
25 Jan – 22 Feb
15 Jun
8-12 wk
19 Apr
10 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Feb
24 May
6-8 wk
7 Apr
5 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
8 – 22 Mar
21 Apr
4-6 wk
19 Apr
19 May
7 wk after
Chinese lantern
Physalis alkekengi
22 Dec – 5 Jan
27 Apr
8-10 wk
2 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
28 Feb
7 Jul
0 wk
22 Feb
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
10 – 24 Feb
4 May
6-8 wk
7 Apr
15 Jun
5 wk after
13 May
5 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
8 Dec – 5 Jan
27 Apr
8-12 wk
2 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
13 Jan – 10 Feb
28 Mar
8-12 wk
7 Apr
23 May
5 wk after
Regal-foxtail
Ptilotus nobilis
25 Jan – 22 Feb
13 Apr
8-12 wk
19 Apr
8 Jun
7 wk after
Globe amaranth
Gomphrena globosa
22 Feb – 8 Mar
27 Apr
6-8 wk
19 Apr
8 Jun
7 wk after
Corn poppy
Papaver rhoeas
28 Feb
22 Jul
0 wk
22 Feb
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
6 Dec – 3 Jan
17 May
8-12 wk
28 Feb
12 Jul
0 wk
5 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
8 – 22 Feb
10 May
8-10 wk
19 Apr
5 Jul
7 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Jan
7 Jun
5-8 wk
28 Feb
12 Jul
0 wk
Stock
Matthiola incana
3 – 17 Jan
10 Jun
6-8 wk
28 Feb
22 Jul
0 wk
13 Mar
12 Jul
2 wk after
Wormwood
Artemisia absinthium
Season too short
3 – 17 Jan
11 May
6-8 wk
28 Feb
22 Jun
0 wk
15 Feb
12 Jun
2 wk before
Mexican sunflower
Tithonia rotundifolia
8 – 22 Mar
6 May
4-6 wk
19 Apr
3 Jun
7 wk after
Garden pansy
Viola × wittrockiana
20 Dec – 3 Jan
27 May
8-10 wk
28 Feb
22 Jul
0 wk
5 Mar
12 Jul
1 wk after
Petunia
Petunia
13 Jan – 10 Feb
30 Apr
8-12 wk
7 Apr
25 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Jan
11 May
6-8 wk
2 Mar
22 Jun
0 wk
10 Apr
12 Jun
6 wk after
Common zinnia
Zinnia elegans
24 Feb – 10 Mar
28 May
4-6 wk
7 Apr
25 Jun
5 wk after
Common morning glory
Ipomoea purpurea
15 – 29 Mar
28 May
3-5 wk
19 Apr
18 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
24 Feb – 10 Mar
7 Jun
4-6 wk
7 Apr
5 Jul
5 wk after
10 Apr
25 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
14 Feb – 14 Mar
13 May
8-12 wk
9 May
8 Jul
10 wk after
Bee balm
Monarda didyma
6 Dec – 3 Jan
27 Apr
8-12 wk
28 Feb
22 Jun
0 wk
26 Mar
12 Jun
4 wk after
Yarrow
Achillea millefolium
Season too short
3 – 17 Jan
11 Apr
6-8 wk
28 Feb
23 May
0 wk
15 Feb
13 May
2 wk before
Safflower
Carthamus tinctorius
28 Feb
22 Jun
0 wk
22 Feb
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Jan
31 May
6-8 wk
28 Feb
12 Jul
0 wk
13 Jan
2 Jul
7 wk before
Bishop's flower
Ammi majus
17 – 31 Jan
14 Jun
4-6 wk
28 Feb
12 Jul
0 wk
13 Mar
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
25 Jan – 8 Feb
17 Mar
10-12 wk
19 Apr
26 May
7 wk after
Sunflower
Helianthus annuus
10 – 17 Mar
21 Jun
3-4 wk
7 Apr
12 Jul
5 wk after
26 Mar
2 Jul
4 wk after
China aster
Callistephus chinensis
10 – 24 Feb
10 Jun
6-8 wk
7 Apr
22 Jul
5 wk after
10 Apr
12 Jul
6 wk after
Annual phlox
Phlox drummondii
27 Jan – 10 Feb
24 May
6-8 wk
24 Mar
5 Jul
3 wk after
10 Apr
25 Jun
6 wk after
Hollyhock
Alcea rosea
3 – 17 Jan
6-8 wk
28 Feb
0 wk
13 Mar
2 wk after
Alpine delphinium
Delphinium elatum
6 Dec – 3 Jan
27 Apr
8-12 wk
28 Feb
22 Jun
0 wk
26 Mar
12 Jun
4 wk after
African marigold
Tagetes erecta
10 – 24 Feb
24 May
6-8 wk
7 Apr
5 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Jan
31 May
6-8 wk
2 Mar
12 Jul
0 wk
10 Apr
2 Jul
6 wk after
Wood sage
Salvia nemorosa
20 Dec – 3 Jan
17 Apr
8-10 wk
28 Feb
12 Jun
0 wk
26 Mar
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
8 Feb – 8 Mar
7 May
6-10 wk
19 Apr
18 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
28 Feb
22 Jul
0 wk
22 Feb
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
27 Jan – 10 Feb
17 May
8-10 wk
7 Apr
12 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
3 – 17 Jan
11 May
6-8 wk
28 Feb
22 Jun
0 wk
15 Feb
12 Jun
2 wk before