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Rel. frost
Last spring frost (0°C) 25 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 202 days 25 Mar – 13 Oct
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
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
4 – 18 Feb
21 Jun
5-7 wk
25 Mar
26 Jul
0 wk
19 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Feb
3 Jul
4-6 wk
25 Mar
31 Jul
0 wk
19 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
18 Jan – 15 Feb
30 Jan
8-12 wk
12 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Feb
16 Jun
5-7 wk
25 Mar
21 Jul
0 wk
12 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
15 – 22 Mar
27 May
3-4 wk
12 Apr
17 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
31 Mar – 7 Apr
10 Jun
4-5 wk
5 May
8 Jul
6 wk after
5 May
28 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
17 – 24 Apr
27 Apr
3-4 wk
15 May
18 May
7 wk after
Onion
Allium cepa (Cepa-gruppen)
31 Dec – 28 Jan
6 Apr
8-12 wk
25 Mar
1 Jun
0 wk
7 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Mar
21 Jun
1 wk before
19 Mar
11 Jun
1 wk before
Maize
Zea mays
Greenhouse
25 Feb – 4 Mar
17 May
3-4 wk
25 Mar
7 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Feb – 4 Mar
10 Jul
3-4 wk
25 Mar
31 Jul
0 wk
7 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 Mar
11 Jul
0 wk
12 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Feb
16 Jun
5-7 wk
25 Mar
21 Jul
0 wk
12 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
16 Feb – 2 Mar
11 Jun
4-6 wk
30 Mar
9 Jul
1 wk after
30 Mar
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Feb
26 Jun
5-7 wk
25 Mar
31 Jul
0 wk
19 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
24 – 31 Mar
1 Jun
3-4 wk
21 Apr
22 Jun
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Feb – 4 Mar
21 Jun
3-4 wk
25 Mar
12 Jul
0 wk
7 Apr
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Feb
28 Jun
4-6 wk
25 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
25 Feb – 4 Mar
15 Jul
3-4 wk
25 Mar
5 Aug
0 wk
19 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Feb
28 Jun
4-6 wk
25 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
12 – 26 Feb
7 Jun
2-4 wk
12 Mar
21 Jun
2 wk before
12 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 Mar
21 Jun
1 wk before
19 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
25 Feb – 4 Mar
30 Jul
3-4 wk
25 Mar
20 Aug
0 wk
5 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
26 Apr – 10 May
4-6 wk
7 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
28 Jan – 11 Feb
26 Apr
6-8 wk
25 Mar
7 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
15 – 29 Mar
3 Jun
2-4 wk
12 Apr
17 Jun
3 wk after
20 Apr
7 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Feb
28 Jun
4-6 wk
25 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
25 Feb – 4 Mar
30 Jun
3-4 wk
25 Mar
21 Jul
0 wk
19 Mar
11 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
10 – 24 Mar
10 May
4-6 wk
21 Apr
7 Jun
4 wk after
Lemon balm
Melissa officinalis
14 – 28 Jan
26 May
8-10 wk
25 Mar
21 Jul
0 wk
20 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
19 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
28 Jan – 11 Feb
9 Jun
6-8 wk
25 Mar
21 Jul
0 wk
19 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
31 Dec – 28 Jan
26 May
8-12 wk
25 Mar
21 Jul
0 wk
20 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
25 Mar
20 Aug
0 wk
7 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
14 – 28 Jan
11 May
8-10 wk
25 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
14 – 28 Jan
16 May
8-10 wk
25 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
28 Jan – 11 Feb
30 May
6-8 wk
25 Mar
11 Jul
0 wk
20 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
28 Jan – 11 Feb
30 May
6-8 wk
25 Mar
11 Jul
0 wk
19 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
17 Dec – 14 Jan
12 Apr
10-14 wk
25 Mar
21 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
24 – 31 Mar
17 May
3-4 wk
21 Apr
7 Jun
4 wk after
Cornflower
Centaurea cyanus
25 Mar
21 Jul
0 wk
19 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
10 – 24 Feb
12 Apr
8-10 wk
21 Apr
7 Jun
4 wk after
Sweet William
Dianthus barbatus
28 Jan – 11 Feb
6-8 wk
25 Mar
0 wk
30 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
24 Feb – 10 Mar
26 Apr
6-8 wk
21 Apr
7 Jun
4 wk after
7 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
19 Feb – 5 Mar
2 May
6-8 wk
16 Apr
13 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
23 Feb – 23 Mar
16 May
4-8 wk
20 Apr
13 Jun
4 wk after
20 Apr
3 Jun
4 wk after
Foxglove
Digitalis purpurea
14 – 28 Jan
8-10 wk
25 Mar
0 wk
7 Apr
2 wk after
Busy lizzie
Impatiens walleriana
10 Feb – 10 Mar
28 May
8-12 wk
5 May
23 Jul
6 wk after
Creeping zinnia
Sanvitalia procumbens
24 Feb – 10 Mar
6 May
6-8 wk
21 Apr
17 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
10 – 24 Mar
10 Apr
4-6 wk
21 Apr
8 May
4 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Jan
26 Apr
8-10 wk
25 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
25 Mar
6 Jul
0 wk
19 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
24 Feb – 10 Mar
16 Apr
6-8 wk
21 Apr
28 May
4 wk after
7 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
31 Dec – 28 Jan
26 Apr
8-12 wk
25 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
27 Jan – 24 Feb
27 Mar
8-12 wk
21 Apr
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
27 Jan – 24 Feb
2 Apr
8-12 wk
21 Apr
28 May
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
24 Feb – 10 Mar
16 Apr
6-8 wk
21 Apr
28 May
4 wk after
Corn poppy
Papaver rhoeas
25 Mar
21 Jul
0 wk
19 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
31 Dec – 28 Jan
16 May
8-12 wk
25 Mar
11 Jul
0 wk
30 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
24 Feb – 10 Mar
22 Apr
8-10 wk
5 May
17 Jun
6 wk after
Sweet pea
Lathyrus odoratus
28 Jan – 18 Feb
6 Jun
5-8 wk
25 Mar
11 Jul
0 wk
Stock
Matthiola incana
28 Jan – 11 Feb
9 Jun
6-8 wk
25 Mar
21 Jul
0 wk
7 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
28 Jan – 11 Feb
10 May
6-8 wk
25 Mar
21 Jun
0 wk
7 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
10 – 24 Mar
25 Apr
4-6 wk
21 Apr
23 May
4 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Jan
26 May
8-10 wk
25 Mar
21 Jul
0 wk
30 Mar
11 Jul
1 wk after
Petunia
Petunia
27 Jan – 24 Feb
12 Apr
8-12 wk
21 Apr
7 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Jan – 11 Feb
10 May
6-8 wk
25 Mar
21 Jun
0 wk
5 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
10 – 24 Mar
10 May
4-6 wk
21 Apr
7 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
17 – 31 Mar
17 May
3-5 wk
21 Apr
7 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
10 – 24 Mar
16 May
4-6 wk
21 Apr
13 Jun
4 wk after
5 May
3 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
10 Feb – 10 Mar
2 May
8-12 wk
5 May
27 Jun
6 wk after
Bee balm
Monarda didyma
31 Dec – 28 Jan
26 Apr
8-12 wk
25 Mar
21 Jun
0 wk
20 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
28 Jan – 11 Feb
10 Apr
6-8 wk
25 Mar
22 May
0 wk
7 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
25 Mar
21 Jun
0 wk
19 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
28 Jan – 11 Feb
30 May
6-8 wk
25 Mar
11 Jul
0 wk
7 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
11 – 25 Feb
13 Jun
4-6 wk
25 Mar
11 Jul
0 wk
7 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
27 Jan – 10 Feb
15 Mar
10-12 wk
21 Apr
24 May
4 wk after
Sunflower
Helianthus annuus
24 – 31 Mar
20 Jun
3-4 wk
21 Apr
11 Jul
4 wk after
20 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
24 Feb – 10 Mar
9 Jun
6-8 wk
21 Apr
21 Jul
4 wk after
5 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
15 Feb – 1 Mar
6 May
6-8 wk
12 Apr
17 Jun
3 wk after
5 May
7 Jun
6 wk after
Hollyhock
Alcea rosea
28 Jan – 11 Feb
6-8 wk
25 Mar
0 wk
7 Apr
2 wk after
Alpine delphinium
Delphinium elatum
31 Dec – 28 Jan
26 Apr
8-12 wk
25 Mar
21 Jun
0 wk
20 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
24 Feb – 10 Mar
6 May
6-8 wk
21 Apr
17 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
28 Jan – 11 Feb
30 May
6-8 wk
25 Mar
11 Jul
0 wk
5 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Jan
16 Apr
8-10 wk
25 Mar
11 Jun
0 wk
20 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
10 Feb – 10 Mar
26 Apr
6-10 wk
21 Apr
7 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
25 Mar
21 Jul
0 wk
19 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
10 – 24 Feb
13 May
8-10 wk
21 Apr
8 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
28 Jan – 11 Feb
10 May
6-8 wk
25 Mar
21 Jun
0 wk
7 Apr
11 Jun
2 wk after