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Rel. frost
Last spring frost (0°C) 17 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 215 days 17 Mar – 18 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)
27 Jan – 10 Feb
21 Jun
5-7 wk
17 Mar
26 Jul
0 wk
11 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Feb
3 Jul
4-6 wk
17 Mar
31 Jul
0 wk
11 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
10 Jan – 7 Feb
1 Apr
8-12 wk
4 Apr
27 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Jan – 10 Feb
16 Jun
5-7 wk
17 Mar
21 Jul
0 wk
4 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
16 – 23 Mar
26 May
3-4 wk
13 Apr
16 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
23 – 30 Mar
13 Jun
4-5 wk
27 Apr
11 Jul
6 wk after
27 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
9 – 16 Apr
15 May
3-4 wk
7 May
5 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Dec – 20 Jan
6 Apr
8-12 wk
17 Mar
1 Jun
0 wk
30 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 Mar
21 Jun
1 wk before
11 Mar
11 Jun
1 wk before
Maize
Zea mays
Fleece
7 – 14 Mar
16 May
3-4 wk
4 Apr
6 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Feb
10 Jul
3-4 wk
17 Mar
31 Jul
0 wk
30 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 Mar
11 Jul
0 wk
4 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Jan – 10 Feb
16 Jun
5-7 wk
17 Mar
21 Jul
0 wk
4 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
8 – 22 Feb
10 Jun
4-6 wk
22 Mar
8 Jul
1 wk after
22 Mar
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Jan – 10 Feb
26 Jun
5-7 wk
17 Mar
31 Jul
0 wk
11 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
30 Mar – 6 Apr
31 May
3-4 wk
27 Apr
21 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Feb
22 Jun
3-4 wk
17 Mar
13 Jul
0 wk
30 Mar
3 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Feb
28 Jun
4-6 wk
17 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Feb
15 Jul
3-4 wk
17 Mar
5 Aug
0 wk
11 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Feb
28 Jun
4-6 wk
17 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Feb
7 Jun
2-4 wk
4 Mar
21 Jun
2 wk before
4 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 Mar
21 Jun
1 wk before
11 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
17 – 24 Feb
30 Jul
3-4 wk
17 Mar
20 Aug
0 wk
25 Feb
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
18 Apr – 2 May
4-6 wk
30 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
7 – 21 Feb
25 Apr
6-8 wk
4 Apr
6 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
16 – 30 Mar
2 Jun
2-4 wk
13 Apr
16 Jun
4 wk after
27 Apr
6 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Feb
28 Jun
4-6 wk
17 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Feb
30 Jun
3-4 wk
17 Mar
21 Jul
0 wk
11 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
16 – 30 Mar
9 May
4-6 wk
27 Apr
6 Jun
6 wk after
Lemon balm
Melissa officinalis
6 – 20 Jan
26 May
8-10 wk
17 Mar
21 Jul
0 wk
12 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
11 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
20 Jan – 3 Feb
9 Jun
6-8 wk
17 Mar
21 Jul
0 wk
11 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
23 Dec – 20 Jan
26 May
8-12 wk
17 Mar
21 Jul
0 wk
12 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
17 Mar
20 Aug
0 wk
30 Mar
10 Aug
2 wk after
Garden sage
Salvia officinalis
6 – 20 Jan
11 May
8-10 wk
17 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
6 – 20 Jan
16 May
8-10 wk
17 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
20 Jan – 3 Feb
30 May
6-8 wk
17 Mar
11 Jul
0 wk
12 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
20 Jan – 3 Feb
30 May
6-8 wk
17 Mar
11 Jul
0 wk
11 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
9 Dec – 6 Jan
12 Apr
10-14 wk
17 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
30 Mar – 6 Apr
16 May
3-4 wk
27 Apr
6 Jun
6 wk after
Cornflower
Centaurea cyanus
17 Mar
21 Jul
0 wk
11 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
2 – 16 Feb
29 Apr
8-10 wk
13 Apr
24 Jun
4 wk after
Sweet William
Dianthus barbatus
20 Jan – 3 Feb
6-8 wk
17 Mar
0 wk
22 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
16 Feb – 2 Mar
13 May
6-8 wk
13 Apr
24 Jun
4 wk after
30 May
14 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Feb
17 May
6-8 wk
8 Apr
28 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Feb – 15 Mar
31 May
4-8 wk
12 Apr
28 Jun
4 wk after
12 Apr
18 Jun
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Jan
8-10 wk
17 Mar
0 wk
30 Mar
2 wk after
Busy lizzie
Impatiens walleriana
2 Feb – 2 Mar
15 Jun
8-12 wk
27 Apr
10 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
16 Feb – 2 Mar
23 May
6-8 wk
13 Apr
4 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
2 – 16 Mar
28 Apr
4-6 wk
13 Apr
26 May
4 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Jan
26 Apr
8-10 wk
17 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
17 Mar
6 Jul
0 wk
11 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
16 Feb – 2 Mar
3 May
6-8 wk
13 Apr
14 Jun
4 wk after
30 May
4 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
23 Dec – 20 Jan
26 Apr
8-12 wk
17 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
19 Jan – 16 Feb
27 Mar
8-12 wk
13 Apr
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
2 Feb – 2 Mar
1 Apr
8-12 wk
27 Apr
27 May
6 wk after
Globe amaranth
Gomphrena globosa
2 – 16 Mar
15 Apr
6-8 wk
27 Apr
27 May
6 wk after
Corn poppy
Papaver rhoeas
17 Mar
21 Jul
0 wk
11 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
23 Dec – 20 Jan
16 May
8-12 wk
17 Mar
11 Jul
0 wk
22 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
16 Feb – 2 Mar
9 May
8-10 wk
27 Apr
4 Jul
6 wk after
Sweet pea
Lathyrus odoratus
20 Jan – 10 Feb
6 Jun
5-8 wk
17 Mar
11 Jul
0 wk
Stock
Matthiola incana
20 Jan – 3 Feb
9 Jun
6-8 wk
17 Mar
21 Jul
0 wk
30 Mar
11 Jul
2 wk after
Wormwood
Artemisia absinthium
20 Jan – 3 Feb
10 May
6-8 wk
17 Mar
21 Jun
0 wk
30 Mar
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
16 – 30 Mar
24 Apr
4-6 wk
27 Apr
22 May
6 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Jan
26 May
8-10 wk
17 Mar
21 Jul
0 wk
22 Mar
11 Jul
1 wk after
Petunia
Petunia
19 Jan – 16 Feb
29 Apr
8-12 wk
13 Apr
24 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Jan – 3 Feb
10 May
6-8 wk
17 Mar
21 Jun
0 wk
27 Apr
11 Jun
6 wk after
Common zinnia
Zinnia elegans
2 – 16 Mar
28 May
4-6 wk
13 Apr
25 Jun
4 wk after
Common morning glory
Ipomoea purpurea
23 Mar – 6 Apr
16 May
3-5 wk
27 Apr
6 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 Mar
31 May
4-6 wk
13 Apr
28 Jun
4 wk after
27 Apr
18 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
20 Feb – 20 Mar
1 May
8-12 wk
15 May
26 Jun
8 wk after
Bee balm
Monarda didyma
23 Dec – 20 Jan
26 Apr
8-12 wk
17 Mar
21 Jun
0 wk
12 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
20 Jan – 3 Feb
10 Apr
6-8 wk
17 Mar
22 May
0 wk
30 Mar
12 May
2 wk after
Safflower
Carthamus tinctorius
17 Mar
21 Jun
0 wk
11 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
20 Jan – 3 Feb
30 May
6-8 wk
17 Mar
11 Jul
0 wk
30 Jan
1 Jul
7 wk before
Bishop's flower
Ammi majus
3 – 17 Feb
13 Jun
4-6 wk
17 Mar
11 Jul
0 wk
30 Mar
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
2 – 16 Feb
17 Mar
10-12 wk
27 Apr
26 May
6 wk after
Sunflower
Helianthus annuus
16 – 23 Mar
20 Jun
3-4 wk
13 Apr
11 Jul
4 wk after
12 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
16 Feb – 2 Mar
9 Jun
6-8 wk
13 Apr
21 Jul
4 wk after
27 Apr
11 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Feb
23 May
6-8 wk
4 Apr
4 Jul
3 wk after
27 Apr
24 Jun
6 wk after
Hollyhock
Alcea rosea
20 Jan – 3 Feb
6-8 wk
17 Mar
0 wk
30 Mar
2 wk after
Alpine delphinium
Delphinium elatum
23 Dec – 20 Jan
26 Apr
8-12 wk
17 Mar
21 Jun
0 wk
12 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
16 Feb – 2 Mar
23 May
6-8 wk
13 Apr
4 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
20 Jan – 3 Feb
30 May
6-8 wk
17 Mar
11 Jul
0 wk
27 Apr
1 Jul
6 wk after
Wood sage
Salvia nemorosa
6 – 20 Jan
16 Apr
8-10 wk
17 Mar
11 Jun
0 wk
12 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
16 Feb – 16 Mar
25 Apr
6-10 wk
27 Apr
6 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
17 Mar
21 Jul
0 wk
11 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 Feb
16 May
8-10 wk
13 Apr
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
20 Jan – 3 Feb
10 May
6-8 wk
17 Mar
21 Jun
0 wk
30 Mar
11 Jun
2 wk after