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Rel. frost
Last spring frost (0°C) 24 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 207 days 24 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)
3 – 17 Feb
22 Jun
5-7 wk
24 Mar
27 Jul
0 wk
18 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Feb
4 Jul
4-6 wk
24 Mar
1 Aug
0 wk
18 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
17 Jan – 14 Feb
29 Mar
8-12 wk
11 Apr
24 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Feb
17 Jun
5-7 wk
24 Mar
22 Jul
0 wk
11 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
23 – 30 Mar
23 May
3-4 wk
20 Apr
13 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
30 Mar – 6 Apr
14 Jun
4-5 wk
4 May
12 Jul
6 wk after
4 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
16 – 23 Apr
15 May
3-4 wk
14 May
5 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
30 Dec – 27 Jan
7 Apr
8-12 wk
24 Mar
2 Jun
0 wk
6 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Mar
22 Jun
1 wk before
18 Mar
12 Jun
1 wk before
Maize
Zea mays
Fleece
14 – 21 Mar
13 May
3-4 wk
11 Apr
3 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 Feb – 3 Mar
11 Jul
3-4 wk
24 Mar
1 Aug
0 wk
6 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
12 Jul
0 wk
11 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Feb
17 Jun
5-7 wk
24 Mar
22 Jul
0 wk
11 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
15 Feb – 1 Mar
9 Jun
4-6 wk
29 Mar
7 Jul
1 wk after
29 Mar
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Feb
27 Jun
5-7 wk
24 Mar
1 Aug
0 wk
18 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
6 – 13 Apr
28 May
3-4 wk
4 May
18 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Feb – 3 Mar
28 Jun
3-4 wk
24 Mar
19 Jul
0 wk
6 Apr
9 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Feb
29 Jun
4-6 wk
24 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
24 Feb – 3 Mar
16 Jul
3-4 wk
24 Mar
6 Aug
0 wk
18 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Feb
29 Jun
4-6 wk
24 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Feb
8 Jun
2-4 wk
11 Mar
22 Jun
2 wk before
11 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Mar
22 Jun
1 wk before
18 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
31 Jul
3-4 wk
24 Mar
21 Aug
0 wk
4 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
25 Apr – 9 May
4-6 wk
6 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
14 – 28 Feb
22 Apr
6-8 wk
11 Apr
3 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 Mar – 6 Apr
30 May
2-4 wk
20 Apr
13 Jun
4 wk after
4 May
3 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Feb
29 Jun
4-6 wk
24 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
24 Feb – 3 Mar
1 Jul
3-4 wk
24 Mar
22 Jul
0 wk
18 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
23 Mar – 6 Apr
6 May
4-6 wk
4 May
3 Jun
6 wk after
Lemon balm
Melissa officinalis
13 – 27 Jan
27 May
8-10 wk
24 Mar
22 Jul
0 wk
19 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
18 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
27 Jan – 10 Feb
9 Jun
6-8 wk
24 Mar
21 Jul
0 wk
18 Feb
11 Jul
5 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
27 May
8-12 wk
24 Mar
22 Jul
0 wk
19 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
24 Mar
21 Aug
0 wk
6 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
13 – 27 Jan
12 May
8-10 wk
24 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
13 – 27 Jan
17 May
8-10 wk
24 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
27 Jan – 10 Feb
31 May
6-8 wk
24 Mar
12 Jul
0 wk
19 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
31 May
6-8 wk
24 Mar
12 Jul
0 wk
18 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
16 Dec – 13 Jan
13 Apr
10-14 wk
24 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
6 – 13 Apr
13 May
3-4 wk
4 May
3 Jun
6 wk after
Cornflower
Centaurea cyanus
24 Mar
22 Jul
0 wk
18 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
9 – 23 Feb
21 Apr
8-10 wk
20 Apr
16 Jun
4 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
0 wk
29 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
23 Feb – 9 Mar
5 May
6-8 wk
20 Apr
16 Jun
4 wk after
6 Jun
6 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
18 Feb – 4 Mar
18 May
6-8 wk
15 Apr
29 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Feb – 22 Mar
1 Jun
4-8 wk
19 Apr
29 Jun
4 wk after
19 Apr
19 Jun
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
0 wk
6 Apr
2 wk after
Busy lizzie
Impatiens walleriana
9 Feb – 9 Mar
15 Jun
8-12 wk
4 May
10 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
23 Feb – 9 Mar
15 May
6-8 wk
20 Apr
26 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
9 – 23 Mar
28 Apr
4-6 wk
20 Apr
26 May
4 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Jan
27 Apr
8-10 wk
24 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
24 Mar
7 Jul
0 wk
18 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
23 Feb – 9 Mar
25 Apr
6-8 wk
20 Apr
6 Jun
4 wk after
6 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
30 Dec – 27 Jan
27 Apr
8-12 wk
24 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
26 Jan – 23 Feb
28 Mar
8-12 wk
20 Apr
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
9 Feb – 9 Mar
29 Mar
8-12 wk
4 May
24 May
6 wk after
Globe amaranth
Gomphrena globosa
9 – 23 Mar
12 Apr
6-8 wk
4 May
24 May
6 wk after
Corn poppy
Papaver rhoeas
24 Mar
22 Jul
0 wk
18 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
30 Dec – 27 Jan
17 May
8-12 wk
24 Mar
12 Jul
0 wk
29 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
23 Feb – 9 Mar
1 May
8-10 wk
4 May
26 Jun
6 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
7 Jun
5-8 wk
24 Mar
12 Jul
0 wk
Stock
Matthiola incana
27 Jan – 10 Feb
10 Jun
6-8 wk
24 Mar
22 Jul
0 wk
6 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
11 May
6-8 wk
24 Mar
22 Jun
0 wk
6 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
23 Mar – 6 Apr
21 Apr
4-6 wk
4 May
19 May
6 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Jan
27 May
8-10 wk
24 Mar
22 Jul
0 wk
29 Mar
12 Jul
1 wk after
Petunia
Petunia
26 Jan – 23 Feb
21 Apr
8-12 wk
20 Apr
16 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Jan – 10 Feb
11 May
6-8 wk
24 Mar
22 Jun
0 wk
4 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
9 – 23 Mar
28 May
4-6 wk
20 Apr
25 Jun
4 wk after
Common morning glory
Ipomoea purpurea
30 Mar – 13 Apr
13 May
3-5 wk
4 May
3 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 Mar
1 Jun
4-6 wk
20 Apr
29 Jun
4 wk after
4 May
19 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
27 Feb – 27 Mar
28 Apr
8-12 wk
22 May
23 Jun
8 wk after
Bee balm
Monarda didyma
30 Dec – 27 Jan
27 Apr
8-12 wk
24 Mar
22 Jun
0 wk
19 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
11 Apr
6-8 wk
24 Mar
23 May
0 wk
6 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
24 Mar
22 Jun
0 wk
18 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
27 Jan – 10 Feb
30 May
6-8 wk
24 Mar
11 Jul
0 wk
6 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
10 – 24 Feb
14 Jun
4-6 wk
24 Mar
12 Jul
0 wk
6 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
9 – 23 Feb
17 Mar
10-12 wk
4 May
26 May
6 wk after
Sunflower
Helianthus annuus
23 – 30 Mar
21 Jun
3-4 wk
20 Apr
12 Jul
4 wk after
19 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
23 Feb – 9 Mar
10 Jun
6-8 wk
20 Apr
22 Jul
4 wk after
4 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
14 – 28 Feb
15 May
6-8 wk
11 Apr
26 Jun
3 wk after
4 May
16 Jun
6 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
0 wk
6 Apr
2 wk after
Alpine delphinium
Delphinium elatum
30 Dec – 27 Jan
27 Apr
8-12 wk
24 Mar
22 Jun
0 wk
19 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
23 Feb – 9 Mar
15 May
6-8 wk
20 Apr
26 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
27 Jan – 10 Feb
31 May
6-8 wk
24 Mar
12 Jul
0 wk
4 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Jan
17 Apr
8-10 wk
24 Mar
12 Jun
0 wk
19 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
23 Feb – 23 Mar
22 Apr
6-10 wk
4 May
3 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
24 Mar
22 Jul
0 wk
18 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
9 – 23 Feb
17 May
8-10 wk
20 Apr
12 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
27 Jan – 10 Feb
10 May
6-8 wk
24 Mar
21 Jun
0 wk
11 Mar
11 Jun
2 wk before