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Rel. frost
Last spring frost (0°C) 26 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 205 days 26 Mar – 17 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)
5 – 19 Feb
22 Jun
5-7 wk
26 Mar
27 Jul
0 wk
20 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Feb
4 Jul
4-6 wk
26 Mar
1 Aug
0 wk
20 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
25 Jan – 22 Feb
7 Feb
8-12 wk
19 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Feb
17 Jun
5-7 wk
26 Mar
22 Jul
0 wk
13 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
22 – 29 Mar
11 Jun
3-4 wk
19 Apr
2 Jul
3 wk after
Florence Fennel
Foeniculum vulgare
10 – 17 Apr
14 Jun
4-5 wk
15 May
12 Jul
7 wk after
6 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
27 Apr – 4 May
12 May
3-4 wk
25 May
2 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
1 – 29 Jan
7 Apr
8-12 wk
26 Mar
2 Jun
0 wk
8 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Mar
22 Jun
1 wk before
20 Mar
12 Jun
1 wk before
Maize
Zea mays
Greenhouse
26 Feb – 5 Mar
1 Jun
3-4 wk
26 Mar
22 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Feb – 7 Mar
11 Jul
3-4 wk
28 Mar
1 Aug
0 wk
8 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 Mar
12 Jul
0 wk
13 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Feb
17 Jun
5-7 wk
26 Mar
22 Jul
0 wk
13 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
17 Feb – 3 Mar
9 Jun
4-6 wk
31 Mar
7 Jul
1 wk after
31 Mar
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Feb
27 Jun
5-7 wk
26 Mar
1 Aug
0 wk
20 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
5 – 12 Apr
16 Jun
3-4 wk
3 May
7 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Feb – 7 Mar
25 Jun
3-4 wk
28 Mar
16 Jul
0 wk
8 Apr
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
26 Feb – 5 Mar
16 Jul
3-4 wk
26 Mar
6 Aug
0 wk
20 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Feb
8 Jun
2-4 wk
13 Mar
22 Jun
2 wk before
13 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Mar
22 Jun
1 wk before
20 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
26 Feb – 5 Mar
31 Jul
3-4 wk
26 Mar
21 Aug
0 wk
6 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 Apr – 11 May
4-6 wk
8 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
29 Jan – 12 Feb
11 May
6-8 wk
26 Mar
22 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
22 Mar – 5 Apr
18 Jun
2-4 wk
19 Apr
2 Jul
3 wk after
21 Apr
22 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
26 Feb – 5 Mar
1 Jul
3-4 wk
26 Mar
22 Jul
0 wk
20 Mar
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
Fleece
22 Mar – 5 Apr
25 May
4-6 wk
3 May
22 Jun
5 wk after
Lemon balm
Melissa officinalis
15 – 29 Jan
27 May
8-10 wk
26 Mar
22 Jul
0 wk
21 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
20 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
29 Jan – 12 Feb
9 Jun
6-8 wk
26 Mar
21 Jul
0 wk
20 Feb
11 Jul
5 wk before
Spearmint
Mentha spicata
1 – 29 Jan
27 May
8-12 wk
26 Mar
22 Jul
0 wk
21 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
26 Mar
21 Aug
0 wk
8 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
17 – 31 Jan
12 May
8-10 wk
28 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
15 – 29 Jan
17 May
8-10 wk
26 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
0 wk
21 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
0 wk
20 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
20 Dec – 17 Jan
13 Apr
10-14 wk
28 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
Fleece
5 – 12 Apr
1 Jun
3-4 wk
3 May
22 Jun
5 wk after
Cornflower
Centaurea cyanus
26 Mar
22 Jul
0 wk
20 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
22 Feb – 8 Mar
21 Apr
8-10 wk
3 May
16 Jun
5 wk after
Sweet William
Dianthus barbatus
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
31 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Mar
5 May
6-8 wk
3 May
16 Jun
5 wk after
8 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
1 – 15 Mar
12 May
6-8 wk
26 Apr
23 Jun
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Feb – 24 Mar
26 May
4-8 wk
21 Apr
23 Jun
4 wk after
21 Apr
13 Jun
4 wk after
Foxglove
Digitalis purpurea
15 – 29 Jan
8-10 wk
26 Mar
0 wk
8 Apr
2 wk after
Busy lizzie
Impatiens walleriana
20 Feb – 20 Mar
12 Jun
8-12 wk
15 May
7 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Mar
15 May
6-8 wk
3 May
26 Jun
5 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Mar – 5 Apr
25 Apr
4-6 wk
3 May
23 May
5 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Jan
27 Apr
8-10 wk
28 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
26 Mar
7 Jul
0 wk
20 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Mar
25 Apr
6-8 wk
3 May
6 Jun
5 wk after
8 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
3 – 31 Jan
27 Apr
8-12 wk
28 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
8 Feb – 8 Mar
28 Mar
8-12 wk
3 May
23 May
5 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
8 Feb – 8 Mar
17 Apr
8-12 wk
3 May
12 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Mar
1 May
6-8 wk
3 May
12 Jun
5 wk after
Corn poppy
Papaver rhoeas
26 Mar
22 Jul
0 wk
20 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Jan
17 May
8-12 wk
26 Mar
12 Jul
0 wk
31 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
6 – 20 Mar
1 May
8-10 wk
15 May
26 Jun
7 wk after
Sweet pea
Lathyrus odoratus
29 Jan – 19 Feb
7 Jun
5-8 wk
26 Mar
12 Jul
0 wk
Stock
Matthiola incana
29 Jan – 12 Feb
10 Jun
6-8 wk
26 Mar
22 Jul
0 wk
8 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
29 Jan – 12 Feb
11 May
6-8 wk
26 Mar
22 Jun
0 wk
8 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Mar – 5 Apr
10 May
4-6 wk
3 May
7 Jun
5 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Jan
27 May
8-10 wk
26 Mar
22 Jul
0 wk
31 Mar
12 Jul
1 wk after
Petunia
Petunia
8 Feb – 8 Mar
21 Apr
8-12 wk
3 May
16 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
31 Jan – 14 Feb
11 May
6-8 wk
28 Mar
22 Jun
0 wk
6 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
22 Mar – 5 Apr
25 May
4-6 wk
3 May
22 Jun
5 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 Mar – 12 Apr
1 Jun
3-5 wk
3 May
22 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
22 Mar – 5 Apr
26 May
4-6 wk
3 May
23 Jun
5 wk after
6 May
13 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
20 Feb – 20 Mar
17 May
8-12 wk
15 May
12 Jul
7 wk after
Bee balm
Monarda didyma
1 – 29 Jan
27 Apr
8-12 wk
26 Mar
22 Jun
0 wk
21 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
29 Jan – 12 Feb
11 Apr
6-8 wk
26 Mar
23 May
0 wk
8 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
26 Mar
22 Jun
0 wk
20 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
29 Jan – 12 Feb
30 May
6-8 wk
26 Mar
11 Jul
0 wk
8 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
12 – 26 Feb
14 Jun
4-6 wk
26 Mar
12 Jul
0 wk
8 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
20 Feb – 6 Mar
14 Mar
10-12 wk
15 May
23 May
7 wk after
Sunflower
Helianthus annuus
5 – 12 Apr
21 Jun
3-4 wk
3 May
12 Jul
5 wk after
21 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
8 – 22 Mar
10 Jun
6-8 wk
3 May
22 Jul
5 wk after
6 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
22 Feb – 8 Mar
15 May
6-8 wk
19 Apr
26 Jun
3 wk after
6 May
16 Jun
6 wk after
Hollyhock
Alcea rosea
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
8 Apr
2 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Jan
27 Apr
8-12 wk
26 Mar
22 Jun
0 wk
21 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 Mar
15 May
6-8 wk
3 May
26 Jun
5 wk after
Black-eyed Susan
Rudbeckia hirta
31 Jan – 14 Feb
31 May
6-8 wk
28 Mar
12 Jul
0 wk
6 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
15 – 29 Jan
17 Apr
8-10 wk
26 Mar
12 Jun
0 wk
21 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
22 Feb – 22 Mar
11 May
6-10 wk
3 May
22 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
26 Mar
22 Jul
0 wk
20 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Feb – 8 Mar
17 May
8-10 wk
3 May
12 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
29 Jan – 12 Feb
10 May
6-8 wk
26 Mar
21 Jun
0 wk
13 Mar
11 Jun
2 wk before