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Rel. frost
Last spring frost (0°C) 6 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 246 days 6 Mar – 7 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)
16 – 30 Jan
20 Jun
5-7 wk
6 Mar
25 Jul
0 wk
28 Feb
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Jan – 6 Feb
2 Jul
4-6 wk
6 Mar
30 Jul
0 wk
28 Feb
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
5 Jan – 2 Feb
12 Apr
8-12 wk
30 Mar
7 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Jan
15 Jun
5-7 wk
6 Mar
20 Jul
0 wk
21 Feb
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
16 – 23 Mar
6 Jun
3-4 wk
13 Apr
27 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
21 – 28 Mar
12 Jun
4-5 wk
25 Apr
10 Jul
7 wk after
16 Apr
30 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
7 – 14 Apr
22 May
3-4 wk
5 May
12 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Dec – 9 Jan
5 Apr
8-12 wk
6 Mar
31 May
0 wk
19 Mar
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Feb
20 Jun
1 wk before
28 Feb
10 Jun
1 wk before
Maize
Zea mays
Fleece
2 – 9 Mar
27 May
3-4 wk
30 Mar
17 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Feb
9 Jul
3-4 wk
8 Mar
30 Jul
0 wk
19 Mar
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 Mar
10 Jul
0 wk
21 Feb
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Jan
15 Jun
5-7 wk
6 Mar
20 Jul
0 wk
21 Feb
10 Jul
2 wk before
Potato
Solanum tuberosum
28 Jan – 11 Feb
12 Jun
4-6 wk
11 Mar
10 Jul
1 wk after
11 Mar
30 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Jan
25 Jun
5-7 wk
6 Mar
30 Jul
0 wk
28 Feb
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
28 Mar – 4 Apr
11 Jun
3-4 wk
25 Apr
2 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Feb
30 Jun
3-4 wk
8 Mar
21 Jul
0 wk
19 Mar
11 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Jan – 6 Feb
27 Jun
4-6 wk
6 Mar
25 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Feb
14 Jul
3-4 wk
6 Mar
4 Aug
0 wk
28 Feb
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Jan – 6 Feb
27 Jun
4-6 wk
6 Mar
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Jan – 7 Feb
6 Jun
2-4 wk
21 Feb
20 Jun
2 wk before
21 Feb
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Feb
20 Jun
1 wk before
28 Feb
10 Jun
1 wk before
Spinach
Spinacia oleracea
6 – 13 Feb
29 Jul
3-4 wk
6 Mar
19 Aug
0 wk
14 Feb
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 Apr
4-6 wk
19 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
2 – 16 Feb
6 May
6-8 wk
30 Mar
17 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
16 – 30 Mar
13 Jun
2-4 wk
13 Apr
27 Jun
5 wk after
16 Apr
17 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Jan – 6 Feb
27 Jun
4-6 wk
6 Mar
25 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Feb
29 Jun
3-4 wk
6 Mar
20 Jul
0 wk
28 Feb
10 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
14 – 28 Mar
20 May
4-6 wk
25 Apr
17 Jun
7 wk after
Lemon balm
Melissa officinalis
26 Dec – 9 Jan
25 May
8-10 wk
6 Mar
20 Jul
0 wk
1 Apr
10 Jul
4 wk after
Dill
Anethum graveolens
28 Feb
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
9 – 23 Jan
8 Jun
6-8 wk
6 Mar
20 Jul
0 wk
31 Jan
10 Jul
5 wk before
Spearmint
Mentha spicata
12 Dec – 9 Jan
25 May
8-12 wk
6 Mar
20 Jul
0 wk
1 Apr
10 Jul
4 wk after
Coriander
Coriandrum sativum
6 Mar
19 Aug
0 wk
19 Mar
9 Aug
2 wk after
Garden sage
Salvia officinalis
28 Dec – 11 Jan
10 May
8-10 wk
8 Mar
5 Jul
0 wk
Common thyme
Thymus vulgaris
26 Dec – 9 Jan
15 May
8-10 wk
6 Mar
10 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Jan
29 May
6-8 wk
6 Mar
10 Jul
0 wk
1 Apr
30 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Jan
29 May
6-8 wk
6 Mar
10 Jul
0 wk
28 Feb
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
30 Nov – 28 Dec
11 Apr
10-14 wk
8 Mar
20 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
28 Mar – 4 Apr
27 May
3-4 wk
25 Apr
17 Jun
7 wk after
Cornflower
Centaurea cyanus
6 Mar
20 Jul
0 wk
28 Feb
10 Jul
1 wk before
Statice
Limonium sinuatum
2 – 16 Feb
30 Apr
8-10 wk
13 Apr
25 Jun
5 wk after
Sweet William
Dianthus barbatus
9 – 23 Jan
6-8 wk
6 Mar
0 wk
11 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
16 Feb – 2 Mar
14 May
6-8 wk
13 Apr
25 Jun
5 wk after
19 May
15 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Feb
20 May
6-8 wk
6 Apr
1 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Feb – 4 Mar
3 Jun
4-8 wk
1 Apr
1 Jul
4 wk after
1 Apr
21 Jun
4 wk after
Foxglove
Digitalis purpurea
26 Dec – 9 Jan
8-10 wk
6 Mar
0 wk
19 Mar
2 wk after
Busy lizzie
Impatiens walleriana
31 Jan – 28 Feb
22 Jun
8-12 wk
25 Apr
17 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
16 Feb – 2 Mar
24 May
6-8 wk
13 Apr
5 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
14 – 28 Mar
20 Apr
4-6 wk
25 Apr
18 May
7 wk after
Chinese lantern
Physalis alkekengi
28 Dec – 11 Jan
25 Apr
8-10 wk
8 Mar
20 Jun
0 wk
Love in a mist
Nigella damascena
6 Mar
5 Jul
0 wk
28 Feb
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
16 Feb – 2 Mar
4 May
6-8 wk
13 Apr
15 Jun
5 wk after
19 May
5 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
14 Dec – 11 Jan
25 Apr
8-12 wk
8 Mar
20 Jun
0 wk
Cardoon
Cynara cardunculus
19 Jan – 16 Feb
26 Mar
8-12 wk
13 Apr
21 May
5 wk after
Regal-foxtail
Ptilotus nobilis
31 Jan – 28 Feb
12 Apr
8-12 wk
25 Apr
7 Jun
7 wk after
Globe amaranth
Gomphrena globosa
28 Feb – 14 Mar
26 Apr
6-8 wk
25 Apr
7 Jun
7 wk after
Corn poppy
Papaver rhoeas
6 Mar
20 Jul
0 wk
28 Feb
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Dec – 9 Jan
15 May
8-12 wk
6 Mar
10 Jul
0 wk
11 Mar
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
14 – 28 Feb
10 May
8-10 wk
25 Apr
5 Jul
7 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Jan
5 Jun
5-8 wk
6 Mar
10 Jul
0 wk
Stock
Matthiola incana
9 – 23 Jan
8 Jun
6-8 wk
6 Mar
20 Jul
0 wk
19 Mar
10 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Jan
9 May
6-8 wk
6 Mar
20 Jun
0 wk
19 Mar
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
14 – 28 Mar
5 May
4-6 wk
25 Apr
2 Jun
7 wk after
Garden pansy
Viola × wittrockiana
26 Dec – 9 Jan
25 May
8-10 wk
6 Mar
20 Jul
0 wk
11 Mar
10 Jul
1 wk after
Petunia
Petunia
19 Jan – 16 Feb
30 Apr
8-12 wk
13 Apr
25 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Jan
9 May
6-8 wk
8 Mar
20 Jun
0 wk
16 Apr
10 Jun
6 wk after
Common zinnia
Zinnia elegans
2 – 16 Mar
4 Jun
4-6 wk
13 Apr
2 Jul
5 wk after
Common morning glory
Ipomoea purpurea
21 Mar – 4 Apr
27 May
3-5 wk
25 Apr
17 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 Mar
3 Jun
4-6 wk
13 Apr
1 Jul
5 wk after
16 Apr
21 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
20 Feb – 20 Mar
12 May
8-12 wk
15 May
7 Jul
10 wk after
Bee balm
Monarda didyma
12 Dec – 9 Jan
25 Apr
8-12 wk
6 Mar
20 Jun
0 wk
1 Apr
10 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Jan
9 Apr
6-8 wk
6 Mar
21 May
0 wk
19 Mar
11 May
2 wk after
Safflower
Carthamus tinctorius
6 Mar
20 Jun
0 wk
28 Feb
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Jan
29 May
6-8 wk
6 Mar
10 Jul
0 wk
19 Jan
30 Jun
7 wk before
Bishop's flower
Ammi majus
23 Jan – 6 Feb
12 Jun
4-6 wk
6 Mar
10 Jul
0 wk
19 Mar
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
31 Jan – 14 Feb
24 Mar
10-12 wk
25 Apr
2 Jun
7 wk after
Sunflower
Helianthus annuus
16 – 23 Mar
19 Jun
3-4 wk
13 Apr
10 Jul
5 wk after
1 Apr
30 Jun
4 wk after
China aster
Callistephus chinensis
16 Feb – 2 Mar
8 Jun
6-8 wk
13 Apr
20 Jul
5 wk after
16 Apr
10 Jul
6 wk after
Annual phlox
Phlox drummondii
2 – 16 Feb
24 May
6-8 wk
30 Mar
5 Jul
3 wk after
16 Apr
25 Jun
6 wk after
Hollyhock
Alcea rosea
9 – 23 Jan
6-8 wk
6 Mar
0 wk
19 Mar
2 wk after
Alpine delphinium
Delphinium elatum
12 Dec – 9 Jan
25 Apr
8-12 wk
6 Mar
20 Jun
0 wk
1 Apr
10 Jun
4 wk after
African marigold
Tagetes erecta
16 Feb – 2 Mar
24 May
6-8 wk
13 Apr
5 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Jan
29 May
6-8 wk
8 Mar
10 Jul
0 wk
16 Apr
30 Jun
6 wk after
Wood sage
Salvia nemorosa
26 Dec – 9 Jan
15 Apr
8-10 wk
6 Mar
10 Jun
0 wk
1 Apr
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
14 Feb – 14 Mar
6 May
6-10 wk
25 Apr
17 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
6 Mar
20 Jul
0 wk
28 Feb
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 Feb
15 May
8-10 wk
13 Apr
10 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
9 – 23 Jan
9 May
6-8 wk
6 Mar
20 Jun
0 wk
21 Feb
10 Jun
2 wk before