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Rel. frost
Last spring frost (0°C) 14 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 244 days 14 Mar – 13 Nov
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)
24 Jan – 7 Feb
21 Jun
5-7 wk
14 Mar
26 Jul
0 wk
8 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
31 Jan – 14 Feb
3 Jul
4-6 wk
14 Mar
31 Jul
0 wk
8 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
7 Jan – 4 Feb
12 Apr
8-12 wk
1 Apr
7 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Jan – 7 Feb
16 Jun
5-7 wk
14 Mar
21 Jul
0 wk
1 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
13 – 20 Mar
6 Jun
3-4 wk
10 Apr
27 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 Mar
13 Jun
4-5 wk
24 Apr
11 Jul
6 wk after
24 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
6 – 13 Apr
16 May
3-4 wk
4 May
6 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Dec – 17 Jan
6 Apr
8-12 wk
14 Mar
1 Jun
0 wk
27 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 Mar
21 Jun
1 wk before
8 Mar
11 Jun
1 wk before
Maize
Zea mays
Fleece
4 – 11 Mar
27 May
3-4 wk
1 Apr
17 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Feb
10 Jul
3-4 wk
14 Mar
31 Jul
0 wk
27 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Mar
11 Jul
0 wk
1 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Jan – 7 Feb
16 Jun
5-7 wk
14 Mar
21 Jul
0 wk
1 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
5 – 19 Feb
9 Jun
4-6 wk
19 Mar
7 Jul
1 wk after
19 Mar
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Jan – 7 Feb
26 Jun
5-7 wk
14 Mar
31 Jul
0 wk
8 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
27 Mar – 3 Apr
11 Jun
3-4 wk
24 Apr
2 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Feb
25 Jun
3-4 wk
14 Mar
16 Jul
0 wk
27 Mar
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Jan – 14 Feb
28 Jun
4-6 wk
14 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Feb
15 Jul
3-4 wk
14 Mar
5 Aug
0 wk
8 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Jan – 14 Feb
28 Jun
4-6 wk
14 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 Feb
7 Jun
2-4 wk
1 Mar
21 Jun
2 wk before
1 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 Mar
21 Jun
1 wk before
8 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Feb
30 Jul
3-4 wk
14 Mar
20 Aug
0 wk
22 Feb
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
15 – 29 Apr
4-6 wk
27 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
4 – 18 Feb
6 May
6-8 wk
1 Apr
17 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 Mar
13 Jun
2-4 wk
10 Apr
27 Jun
4 wk after
24 Apr
17 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Jan – 14 Feb
28 Jun
4-6 wk
14 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Feb
30 Jun
3-4 wk
14 Mar
21 Jul
0 wk
8 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
13 – 27 Mar
20 May
4-6 wk
24 Apr
17 Jun
6 wk after
Lemon balm
Melissa officinalis
3 – 17 Jan
26 May
8-10 wk
14 Mar
21 Jul
0 wk
9 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
8 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
17 – 31 Jan
9 Jun
6-8 wk
14 Mar
21 Jul
0 wk
8 Feb
11 Jul
5 wk before
Spearmint
Mentha spicata
20 Dec – 17 Jan
26 May
8-12 wk
14 Mar
21 Jul
0 wk
9 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
14 Mar
20 Aug
0 wk
27 Mar
10 Aug
2 wk after
Garden sage
Salvia officinalis
3 – 17 Jan
11 May
8-10 wk
14 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
3 – 17 Jan
16 May
8-10 wk
14 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Jan
30 May
6-8 wk
14 Mar
11 Jul
0 wk
9 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
17 – 31 Jan
30 May
6-8 wk
14 Mar
11 Jul
0 wk
8 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
6 Dec – 3 Jan
12 Apr
10-14 wk
14 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
27 Mar – 3 Apr
27 May
3-4 wk
24 Apr
17 Jun
6 wk after
Cornflower
Centaurea cyanus
14 Mar
21 Jul
0 wk
8 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
30 Jan – 13 Feb
26 Apr
8-10 wk
10 Apr
21 Jun
4 wk after
Sweet William
Dianthus barbatus
17 – 31 Jan
6-8 wk
14 Mar
0 wk
19 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Feb
10 May
6-8 wk
10 Apr
21 Jun
4 wk after
27 May
11 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Feb
16 May
6-8 wk
5 Apr
27 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
12 Feb – 12 Mar
30 May
4-8 wk
9 Apr
27 Jun
4 wk after
9 Apr
17 Jun
4 wk after
Foxglove
Digitalis purpurea
3 – 17 Jan
8-10 wk
14 Mar
0 wk
27 Mar
2 wk after
Busy lizzie
Impatiens walleriana
30 Jan – 27 Feb
16 Jun
8-12 wk
24 Apr
11 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Feb
20 May
6-8 wk
10 Apr
1 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
13 – 27 Mar
20 Apr
4-6 wk
24 Apr
18 May
6 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Jan
26 Apr
8-10 wk
14 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
14 Mar
6 Jul
0 wk
8 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Feb
30 Apr
6-8 wk
10 Apr
11 Jun
4 wk after
27 May
1 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
20 Dec – 17 Jan
26 Apr
8-12 wk
14 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
16 Jan – 13 Feb
27 Mar
8-12 wk
10 Apr
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
30 Jan – 27 Feb
12 Apr
8-12 wk
24 Apr
7 Jun
6 wk after
Globe amaranth
Gomphrena globosa
27 Feb – 13 Mar
26 Apr
6-8 wk
24 Apr
7 Jun
6 wk after
Corn poppy
Papaver rhoeas
14 Mar
21 Jul
0 wk
8 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
20 Dec – 17 Jan
16 May
8-12 wk
14 Mar
11 Jul
0 wk
19 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 Feb
6 May
8-10 wk
24 Apr
1 Jul
6 wk after
Sweet pea
Lathyrus odoratus
17 Jan – 7 Feb
6 Jun
5-8 wk
14 Mar
11 Jul
0 wk
Stock
Matthiola incana
17 – 31 Jan
9 Jun
6-8 wk
14 Mar
21 Jul
0 wk
27 Mar
11 Jul
2 wk after
Wormwood
Artemisia absinthium
17 – 31 Jan
10 May
6-8 wk
14 Mar
21 Jun
0 wk
27 Mar
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
13 – 27 Mar
5 May
4-6 wk
24 Apr
2 Jun
6 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Jan
26 May
8-10 wk
14 Mar
21 Jul
0 wk
19 Mar
11 Jul
1 wk after
Petunia
Petunia
16 Jan – 13 Feb
26 Apr
8-12 wk
10 Apr
21 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Jan
10 May
6-8 wk
14 Mar
21 Jun
0 wk
24 Apr
11 Jun
6 wk after
Common zinnia
Zinnia elegans
27 Feb – 13 Mar
29 May
4-6 wk
10 Apr
26 Jun
4 wk after
Common morning glory
Ipomoea purpurea
20 Mar – 3 Apr
27 May
3-5 wk
24 Apr
17 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
27 Feb – 13 Mar
30 May
4-6 wk
10 Apr
27 Jun
4 wk after
24 Apr
17 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
17 Feb – 17 Mar
12 May
8-12 wk
12 May
7 Jul
8 wk after
Bee balm
Monarda didyma
20 Dec – 17 Jan
26 Apr
8-12 wk
14 Mar
21 Jun
0 wk
9 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
17 – 31 Jan
10 Apr
6-8 wk
14 Mar
22 May
0 wk
27 Mar
12 May
2 wk after
Safflower
Carthamus tinctorius
14 Mar
21 Jun
0 wk
8 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
17 – 31 Jan
30 May
6-8 wk
14 Mar
11 Jul
0 wk
27 Jan
1 Jul
7 wk before
Bishop's flower
Ammi majus
31 Jan – 14 Feb
13 Jun
4-6 wk
14 Mar
11 Jul
0 wk
27 Mar
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
30 Jan – 13 Feb
18 Mar
10-12 wk
24 Apr
27 May
6 wk after
Sunflower
Helianthus annuus
13 – 20 Mar
20 Jun
3-4 wk
10 Apr
11 Jul
4 wk after
9 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
13 – 27 Feb
9 Jun
6-8 wk
10 Apr
21 Jul
4 wk after
24 Apr
11 Jul
6 wk after
Annual phlox
Phlox drummondii
4 – 18 Feb
20 May
6-8 wk
1 Apr
1 Jul
3 wk after
24 Apr
21 Jun
6 wk after
Hollyhock
Alcea rosea
17 – 31 Jan
6-8 wk
14 Mar
0 wk
27 Mar
2 wk after
Alpine delphinium
Delphinium elatum
20 Dec – 17 Jan
26 Apr
8-12 wk
14 Mar
21 Jun
0 wk
9 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Feb
20 May
6-8 wk
10 Apr
1 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
17 – 31 Jan
30 May
6-8 wk
14 Mar
11 Jul
0 wk
24 Apr
1 Jul
6 wk after
Wood sage
Salvia nemorosa
3 – 17 Jan
16 Apr
8-10 wk
14 Mar
11 Jun
0 wk
9 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
13 Feb – 13 Mar
6 May
6-10 wk
24 Apr
17 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
14 Mar
21 Jul
0 wk
8 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
30 Jan – 13 Feb
16 May
8-10 wk
10 Apr
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
17 – 31 Jan
10 May
6-8 wk
14 Mar
21 Jun
0 wk
1 Mar
11 Jun
2 wk before