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Rel. frost
Last spring frost (0°C) 5 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 260 days 5 Mar – 20 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)
15 – 29 Jan
21 Jun
5-7 wk
5 Mar
26 Jul
0 wk
27 Feb
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Jan – 5 Feb
3 Jul
4-6 wk
5 Mar
31 Jul
0 wk
27 Feb
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
4 Jan – 1 Feb
20 Apr
8-12 wk
29 Mar
15 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
15 – 29 Jan
16 Jun
5-7 wk
5 Mar
21 Jul
0 wk
18 Jan
11 Jul
7 wk before
Garden cucumber
Cucumis sativus
Fleece
15 – 22 Mar
14 Jun
3-4 wk
12 Apr
5 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 Mar
13 Jun
4-5 wk
24 Apr
11 Jul
7 wk after
15 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
26 Apr – 3 May
15 May
3-4 wk
24 May
5 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Dec – 8 Jan
6 Apr
8-12 wk
5 Mar
1 Jun
0 wk
18 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 Feb
21 Jun
1 wk before
27 Feb
11 Jun
1 wk before
Maize
Zea mays
Fleece
1 – 8 Mar
4 Jun
3-4 wk
29 Mar
25 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Feb
10 Jul
3-4 wk
7 Mar
31 Jul
0 wk
18 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 Mar
11 Jul
0 wk
20 Feb
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
15 – 29 Jan
16 Jun
5-7 wk
5 Mar
21 Jul
0 wk
18 Jan
11 Jul
7 wk before
Potato
Solanum tuberosum
27 Jan – 10 Feb
11 Jun
4-6 wk
10 Mar
9 Jul
1 wk after
10 Mar
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Jan
26 Jun
5-7 wk
5 Mar
31 Jul
0 wk
27 Feb
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
27 Mar – 3 Apr
19 Jun
3-4 wk
24 Apr
10 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Feb
28 Jun
3-4 wk
7 Mar
19 Jul
0 wk
18 Mar
9 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
22 Jan – 5 Feb
28 Jun
4-6 wk
5 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
5 – 12 Feb
15 Jul
3-4 wk
5 Mar
5 Aug
0 wk
27 Feb
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
22 Jan – 5 Feb
28 Jun
4-6 wk
5 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Jan – 6 Feb
7 Jun
2-4 wk
20 Feb
21 Jun
2 wk before
20 Feb
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 Feb
21 Jun
1 wk before
27 Feb
11 Jun
1 wk before
Spinach
Spinacia oleracea
5 – 12 Feb
30 Jul
3-4 wk
5 Mar
20 Aug
0 wk
13 Feb
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 Apr
4-6 wk
18 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
1 – 15 Feb
14 May
6-8 wk
29 Mar
25 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 Mar
21 Jun
2-4 wk
12 Apr
5 Jul
5 wk after
15 Apr
25 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
22 Jan – 5 Feb
28 Jun
4-6 wk
5 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
5 – 12 Feb
30 Jun
3-4 wk
5 Mar
21 Jul
0 wk
27 Feb
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
28 May
4-6 wk
24 Apr
25 Jun
7 wk after
Lemon balm
Melissa officinalis
25 Dec – 8 Jan
26 May
8-10 wk
5 Mar
21 Jul
0 wk
31 Mar
11 Jul
4 wk after
Dill
Anethum graveolens
27 Feb
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
8 – 22 Jan
9 Jun
6-8 wk
5 Mar
21 Jul
0 wk
30 Jan
11 Jul
5 wk before
Spearmint
Mentha spicata
11 Dec – 8 Jan
26 May
8-12 wk
5 Mar
21 Jul
0 wk
31 Mar
11 Jul
4 wk after
Coriander
Coriandrum sativum
5 Mar
20 Aug
0 wk
18 Mar
10 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
25 Dec – 8 Jan
11 May
8-10 wk
5 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
Season too short
25 Dec – 8 Jan
16 May
8-10 wk
5 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Jan
30 May
6-8 wk
5 Mar
11 Jul
0 wk
31 Mar
1 Jul
4 wk after
Parsley
Petroselinum crispum
8 – 22 Jan
30 May
6-8 wk
5 Mar
11 Jul
0 wk
27 Feb
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
29 Nov – 27 Dec
12 Apr
10-14 wk
7 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
4 Jun
3-4 wk
24 Apr
25 Jun
7 wk after
Cornflower
Centaurea cyanus
5 Mar
21 Jul
0 wk
27 Feb
11 Jul
1 wk before
Statice
Limonium sinuatum
1 – 15 Feb
12 May
8-10 wk
12 Apr
7 Jul
5 wk after
Sweet William
Dianthus barbatus
8 – 22 Jan
6-8 wk
5 Mar
0 wk
10 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 Feb – 1 Mar
26 May
6-8 wk
12 Apr
7 Jul
5 wk after
18 May
27 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Feb
30 May
6-8 wk
5 Apr
11 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
3 Feb – 3 Mar
13 Jun
4-8 wk
31 Mar
11 Jul
4 wk after
31 Mar
1 Jul
4 wk after
Foxglove
Digitalis purpurea
25 Dec – 8 Jan
8-10 wk
5 Mar
0 wk
18 Mar
2 wk after
Busy lizzie
Impatiens walleriana
30 Jan – 27 Feb
29 Jun
8-12 wk
24 Apr
24 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
15 Feb – 1 Mar
5 Jun
6-8 wk
12 Apr
17 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
13 – 27 Mar
28 Apr
4-6 wk
24 Apr
26 May
7 wk after
Chinese lantern
Physalis alkekengi
27 Dec – 10 Jan
26 Apr
8-10 wk
7 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
5 Mar
6 Jul
0 wk
27 Feb
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
15 Feb – 1 Mar
16 May
6-8 wk
12 Apr
27 Jun
5 wk after
18 May
17 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
13 Dec – 10 Jan
26 Apr
8-12 wk
7 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
18 Jan – 15 Feb
27 Mar
8-12 wk
12 Apr
22 May
5 wk after
Regal-foxtail
Ptilotus nobilis
30 Jan – 27 Feb
20 Apr
8-12 wk
24 Apr
15 Jun
7 wk after
Globe amaranth
Gomphrena globosa
27 Feb – 13 Mar
4 May
6-8 wk
24 Apr
15 Jun
7 wk after
Corn poppy
Papaver rhoeas
5 Mar
21 Jul
0 wk
27 Feb
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Dec – 8 Jan
16 May
8-12 wk
5 Mar
11 Jul
0 wk
10 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 Feb
22 May
8-10 wk
24 Apr
17 Jul
7 wk after
Sweet pea
Lathyrus odoratus
8 – 29 Jan
6 Jun
5-8 wk
5 Mar
11 Jul
0 wk
Stock
Matthiola incana
8 – 22 Jan
9 Jun
6-8 wk
5 Mar
21 Jul
0 wk
18 Mar
11 Jul
2 wk after
Wormwood
Artemisia absinthium
Season too short
8 – 22 Jan
10 May
6-8 wk
5 Mar
21 Jun
0 wk
20 Feb
11 Jun
2 wk before
Mexican sunflower
Tithonia rotundifolia
13 – 27 Mar
13 May
4-6 wk
24 Apr
10 Jun
7 wk after
Garden pansy
Viola × wittrockiana
25 Dec – 8 Jan
26 May
8-10 wk
5 Mar
21 Jul
0 wk
10 Mar
11 Jul
1 wk after
Petunia
Petunia
18 Jan – 15 Feb
12 May
8-12 wk
12 Apr
7 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Jan
10 May
6-8 wk
7 Mar
21 Jun
0 wk
15 Apr
11 Jun
6 wk after
Common zinnia
Zinnia elegans
1 – 15 Mar
11 Jun
4-6 wk
12 Apr
9 Jul
5 wk after
Common morning glory
Ipomoea purpurea
20 Mar – 3 Apr
4 Jun
3-5 wk
24 Apr
25 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 Mar
13 Jun
4-6 wk
12 Apr
11 Jul
5 wk after
15 Apr
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
19 Feb – 19 Mar
20 May
8-12 wk
14 May
15 Jul
10 wk after
Bee balm
Monarda didyma
11 Dec – 8 Jan
26 Apr
8-12 wk
5 Mar
21 Jun
0 wk
31 Mar
11 Jun
4 wk after
Yarrow
Achillea millefolium
Season too short
8 – 22 Jan
10 Apr
6-8 wk
5 Mar
22 May
0 wk
20 Feb
12 May
2 wk before
Safflower
Carthamus tinctorius
5 Mar
21 Jun
0 wk
27 Feb
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Jan
30 May
6-8 wk
5 Mar
11 Jul
0 wk
18 Jan
1 Jul
7 wk before
Bishop's flower
Ammi majus
22 Jan – 5 Feb
13 Jun
4-6 wk
5 Mar
11 Jul
0 wk
18 Mar
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
30 Jan – 13 Feb
31 Mar
10-12 wk
24 Apr
9 Jun
7 wk after
Sunflower
Helianthus annuus
15 – 22 Mar
20 Jun
3-4 wk
12 Apr
11 Jul
5 wk after
31 Mar
1 Jul
4 wk after
China aster
Callistephus chinensis
15 Feb – 1 Mar
9 Jun
6-8 wk
12 Apr
21 Jul
5 wk after
15 Apr
11 Jul
6 wk after
Annual phlox
Phlox drummondii
1 – 15 Feb
5 Jun
6-8 wk
29 Mar
17 Jul
3 wk after
15 Apr
7 Jul
6 wk after
Hollyhock
Alcea rosea
8 – 22 Jan
6-8 wk
5 Mar
0 wk
18 Mar
2 wk after
Alpine delphinium
Delphinium elatum
11 Dec – 8 Jan
26 Apr
8-12 wk
5 Mar
21 Jun
0 wk
31 Mar
11 Jun
4 wk after
African marigold
Tagetes erecta
15 Feb – 1 Mar
5 Jun
6-8 wk
12 Apr
17 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Jan
30 May
6-8 wk
7 Mar
11 Jul
0 wk
15 Apr
1 Jul
6 wk after
Wood sage
Salvia nemorosa
25 Dec – 8 Jan
16 Apr
8-10 wk
5 Mar
11 Jun
0 wk
31 Mar
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
13 Feb – 13 Mar
14 May
6-10 wk
24 Apr
25 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
5 Mar
21 Jul
0 wk
27 Feb
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
1 – 15 Feb
16 May
8-10 wk
12 Apr
11 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
8 – 22 Jan
10 May
6-8 wk
5 Mar
21 Jun
0 wk
20 Feb
11 Jun
2 wk before