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