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Rel. frost
Last spring frost (0°C) 15 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 240 days 15 Mar – 10 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)
Season too short
25 Jan – 8 Feb
12 Jun
5-7 wk
15 Mar
17 Jul
0 wk
6 Mar
7 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
1 – 15 Feb
24 Jun
4-6 wk
15 Mar
22 Jul
0 wk
6 Mar
12 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
14 Jan – 11 Feb
2 Feb
8-12 wk
8 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
25 Jan – 8 Feb
7 Jun
5-7 wk
15 Mar
12 Jul
0 wk
27 Feb
2 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
11 – 18 Mar
6 Jun
3-4 wk
8 Apr
27 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
30 Mar – 6 Apr
4 Jun
4-5 wk
4 May
2 Jul
7 wk after
27 Apr
22 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
16 – 23 Apr
7 May
3-4 wk
14 May
28 May
9 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
21 Dec – 18 Jan
28 Mar
8-12 wk
15 Mar
23 May
0 wk
15 Mar
13 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
6 Mar
12 Jun
1 wk before
6 Mar
2 Jun
1 wk before
Maize
Zea mays
Greenhouse
15 – 22 Feb
27 May
3-4 wk
15 Mar
17 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Feb
1 Jul
3-4 wk
17 Mar
22 Jul
0 wk
28 Mar
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 Mar
2 Jul
0 wk
15 Mar
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
25 Jan – 8 Feb
7 Jun
5-7 wk
15 Mar
12 Jul
0 wk
27 Feb
2 Jul
2 wk before
Potato
Solanum tuberosum
Season too short
29 Jan – 12 Feb
4 Jun
4-6 wk
12 Mar
2 Jul
0 wk
12 Mar
22 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
Season too short
25 Jan – 8 Feb
17 Jun
5-7 wk
15 Mar
22 Jul
0 wk
6 Mar
12 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
25 Mar – 1 Apr
11 Jun
3-4 wk
22 Apr
2 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
15 – 22 Feb
1 Jul
3-4 wk
15 Mar
22 Jul
0 wk
15 Mar
12 Jul
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
1 – 15 Feb
19 Jun
4-6 wk
15 Mar
17 Jul
0 wk
Lettuce
Lactuca sativa
Season too short
15 – 22 Feb
6 Jul
3-4 wk
15 Mar
27 Jul
0 wk
6 Mar
17 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
1 – 15 Feb
19 Jun
4-6 wk
15 Mar
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
30 Jan – 13 Feb
29 May
2-4 wk
27 Feb
12 Jun
2 wk before
27 Feb
2 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
6 Mar
12 Jun
1 wk before
6 Mar
2 Jun
1 wk before
Spinach
Spinacia oleracea
Season too short
15 – 22 Feb
21 Jul
3-4 wk
15 Mar
11 Aug
0 wk
14 Jan
1 Aug
9 wk before
Sweet potato
Ipomoea batatas
9 – 23 Apr
4-6 wk
21 May
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
18 Jan – 1 Feb
6 May
6-8 wk
15 Mar
17 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
11 – 25 Mar
13 Jun
2-4 wk
8 Apr
27 Jun
3 wk after
9 Apr
17 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
1 – 15 Feb
19 Jun
4-6 wk
15 Mar
17 Jul
0 wk
Garden pea
Pisum sativum
Season too short
15 – 22 Feb
21 Jun
3-4 wk
15 Mar
12 Jul
0 wk
6 Mar
2 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
Fleece
11 – 25 Mar
20 May
4-6 wk
22 Apr
17 Jun
5 wk after
Lemon balm
Melissa officinalis
Season too short
4 – 18 Jan
17 May
8-10 wk
15 Mar
12 Jul
0 wk
21 Mar
2 Jul
1 wk after
Dill
Anethum graveolens
16 Mar
22 Jul
0 wk
Wild chives
Allium schoenoprasum
Season too short
18 Jan – 1 Feb
31 May
6-8 wk
15 Mar
12 Jul
0 wk
6 Mar
2 Jul
1 wk before
Spearmint
Mentha spicata
Season too short
21 Dec – 18 Jan
17 May
8-12 wk
15 Mar
12 Jul
0 wk
21 Mar
2 Jul
1 wk after
Coriander
Coriandrum sativum
15 Mar
11 Aug
0 wk
28 Mar
1 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
4 – 18 Jan
2 May
8-10 wk
15 Mar
27 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
4 – 18 Jan
7 May
8-10 wk
15 Mar
2 Jul
0 wk
Oregano
Origanum vulgare
Season too short
18 Jan – 1 Feb
21 May
6-8 wk
15 Mar
2 Jul
0 wk
21 Mar
22 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
18 Jan – 1 Feb
21 May
6-8 wk
15 Mar
2 Jul
0 wk
6 Mar
22 Jun
1 wk before
Rosemary
Salvia rosmarinus
9 Dec – 6 Jan
3 Apr
10-14 wk
17 Mar
12 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
Fleece
25 Mar – 1 Apr
27 May
3-4 wk
22 Apr
17 Jun
5 wk after
Cornflower
Centaurea cyanus
Season too short
15 Mar
12 Jul
0 wk
6 Mar
2 Jul
1 wk before
Statice
Limonium sinuatum
11 – 25 Feb
26 Apr
8-10 wk
22 Apr
21 Jun
5 wk after
Sweet William
Dianthus barbatus
18 Jan – 1 Feb
6-8 wk
15 Mar
0 wk
25 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
25 Feb – 11 Mar
10 May
6-8 wk
22 Apr
21 Jun
5 wk after
21 May
11 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
18 Feb – 4 Mar
16 May
6-8 wk
15 Apr
27 Jun
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
24 Jan – 21 Feb
4 Jun
4-8 wk
21 Mar
2 Jul
1 wk after
21 Mar
22 Jun
1 wk after
Foxglove
Digitalis purpurea
4 – 18 Jan
8-10 wk
15 Mar
0 wk
28 Mar
2 wk after
Busy lizzie
Impatiens walleriana
9 Feb – 9 Mar
7 Jun
8-12 wk
4 May
2 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
25 Feb – 11 Mar
20 May
6-8 wk
22 Apr
1 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Season too short
11 – 25 Mar
20 Apr
4-6 wk
22 Apr
18 May
5 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Jan
17 Apr
8-10 wk
17 Mar
12 Jun
0 wk
Love in a mist
Nigella damascena
15 Mar
27 Jun
0 wk
16 Mar
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
25 Feb – 11 Mar
30 Apr
6-8 wk
22 Apr
11 Jun
5 wk after
21 May
1 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
23 Dec – 20 Jan
17 Apr
8-12 wk
17 Mar
12 Jun
0 wk
Cardoon
Cynara cardunculus
28 Jan – 25 Feb
18 Mar
8-12 wk
22 Apr
13 May
5 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
28 Jan – 25 Feb
12 Apr
8-12 wk
22 Apr
7 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Fleece
25 Feb – 11 Mar
26 Apr
6-8 wk
22 Apr
7 Jun
5 wk after
Corn poppy
Papaver rhoeas
15 Mar
12 Jul
0 wk
16 Mar
2 Jul
0 wk
Snapdragon
Antirrhinum majus
Season too short
21 Dec – 18 Jan
7 May
8-12 wk
15 Mar
2 Jul
0 wk
12 Mar
22 Jun
0 wk
Flossflower
Ageratum houstonianum
23 Feb – 9 Mar
6 May
8-10 wk
4 May
1 Jul
7 wk after
Sweet pea
Lathyrus odoratus
Season too short
18 Jan – 8 Feb
28 May
5-8 wk
15 Mar
2 Jul
0 wk
Stock
Matthiola incana
Season too short
18 Jan – 1 Feb
31 May
6-8 wk
15 Mar
12 Jul
0 wk
15 Mar
2 Jul
0 wk
Wormwood
Artemisia absinthium
Season too short
18 Jan – 1 Feb
1 May
6-8 wk
15 Mar
12 Jun
0 wk
15 Mar
2 Jun
0 wk
Mexican sunflower
Tithonia rotundifolia
Fleece
11 – 25 Mar
5 May
4-6 wk
22 Apr
2 Jun
5 wk after
Garden pansy
Viola × wittrockiana
Season too short
4 – 18 Jan
17 May
8-10 wk
15 Mar
12 Jul
0 wk
12 Mar
2 Jul
0 wk
Petunia
Petunia
28 Jan – 25 Feb
26 Apr
8-12 wk
22 Apr
21 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Jan – 3 Feb
1 May
6-8 wk
17 Mar
12 Jun
0 wk
27 Apr
2 Jun
6 wk after
Common zinnia
Zinnia elegans
11 – 25 Mar
20 May
4-6 wk
22 Apr
17 Jun
5 wk after
Common morning glory
Ipomoea purpurea
Fleece
18 Mar – 1 Apr
27 May
3-5 wk
22 Apr
17 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
11 – 25 Mar
30 May
4-6 wk
22 Apr
27 Jun
5 wk after
27 Apr
17 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
9 Feb – 9 Mar
12 May
8-12 wk
4 May
7 Jul
7 wk after
Bee balm
Monarda didyma
Season too short
21 Dec – 18 Jan
17 Apr
8-12 wk
15 Mar
12 Jun
0 wk
21 Mar
2 Jun
1 wk after
Yarrow
Achillea millefolium
Season too short
18 Jan – 1 Feb
1 Apr
6-8 wk
15 Mar
13 May
0 wk
15 Mar
3 May
0 wk
Safflower
Carthamus tinctorius
Season too short
15 Mar
12 Jun
0 wk
6 Mar
2 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
18 Jan – 1 Feb
21 May
6-8 wk
15 Mar
2 Jul
0 wk
27 Feb
22 Jun
2 wk before
Bishop's flower
Ammi majus
Season too short
1 – 15 Feb
4 Jun
4-6 wk
15 Mar
2 Jul
0 wk
15 Mar
22 Jun
0 wk
Drumsticks
Pycnosorus globosus
Fleece
28 Jan – 11 Feb
29 Mar
10-12 wk
22 Apr
7 Jun
5 wk after
Sunflower
Helianthus annuus
25 Mar – 1 Apr
11 Jun
3-4 wk
22 Apr
2 Jul
5 wk after
9 Apr
22 Jun
4 wk after
China aster
Callistephus chinensis
25 Feb – 11 Mar
31 May
6-8 wk
22 Apr
12 Jul
5 wk after
27 Apr
2 Jul
6 wk after
Annual phlox
Phlox drummondii
11 – 25 Feb
20 May
6-8 wk
8 Apr
1 Jul
3 wk after
27 Apr
21 Jun
6 wk after
Hollyhock
Alcea rosea
18 Jan – 1 Feb
6-8 wk
15 Mar
0 wk
28 Mar
2 wk after
Alpine delphinium
Delphinium elatum
Season too short
21 Dec – 18 Jan
17 Apr
8-12 wk
15 Mar
12 Jun
0 wk
21 Mar
2 Jun
1 wk after
African marigold
Tagetes erecta
25 Feb – 11 Mar
20 May
6-8 wk
22 Apr
1 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
20 Jan – 3 Feb
21 May
6-8 wk
17 Mar
2 Jul
0 wk
27 Apr
22 Jun
6 wk after
Wood sage
Salvia nemorosa
Season too short
4 – 18 Jan
7 Apr
8-10 wk
15 Mar
2 Jun
0 wk
21 Mar
23 May
1 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
11 Feb – 11 Mar
6 May
6-10 wk
22 Apr
17 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
15 Mar
12 Jul
0 wk
16 Mar
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
11 – 25 Feb
7 May
8-10 wk
22 Apr
2 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
18 Jan – 1 Feb
1 May
6-8 wk
15 Mar
12 Jun
0 wk
15 Mar
2 Jun
0 wk