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Rel. frost
Last spring frost (0°C) 13 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 183 days 13 Apr – 13 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)
23 Feb – 9 Mar
19 Jun
5-7 wk
13 Apr
24 Jul
0 wk
6 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
2 – 16 Mar
1 Jul
4-6 wk
13 Apr
29 Jul
0 wk
6 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
30 Jan – 27 Feb
11 Mar
8-12 wk
24 Apr
6 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Feb – 9 Mar
14 Jun
5-7 wk
13 Apr
19 Jul
0 wk
1 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
4 – 11 Apr
5 May
3-4 wk
2 May
26 May
3 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 Apr
11 Jun
4-5 wk
19 May
9 Jul
5 wk after
19 May
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
28 Apr – 5 May
3-4 wk
26 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Jan – 16 Feb
2 Apr
8-12 wk
13 Apr
28 May
0 wk
23 Apr
18 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 Apr
17 Jun
1 wk before
6 Apr
7 Jun
1 wk before
Maize
Zea mays
Fleece
27 Mar – 3 Apr
25 Apr
3-4 wk
24 Apr
16 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Mar
8 Jul
3-4 wk
19 Apr
29 Jul
1 wk after
23 Apr
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 Apr
9 Jul
0 wk
1 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Feb – 9 Mar
14 Jun
5-7 wk
13 Apr
19 Jul
0 wk
1 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
7 – 21 Mar
4 Jun
4-6 wk
18 Apr
2 Jul
1 wk after
18 Apr
22 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Feb – 9 Mar
24 Jun
5-7 wk
13 Apr
29 Jul
0 wk
6 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 Apr
10 May
3-4 wk
19 May
31 May
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Mar
9 Jun
3-4 wk
19 Apr
30 Jun
1 wk after
23 Apr
20 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
2 – 16 Mar
26 Jun
4-6 wk
13 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
16 – 23 Mar
13 Jul
3-4 wk
13 Apr
3 Aug
0 wk
6 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
2 – 16 Mar
26 Jun
4-6 wk
13 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Mar
5 Jun
2-4 wk
1 Apr
19 Jun
2 wk before
1 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 Apr
17 Jun
1 wk before
6 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
16 – 23 Mar
28 Jul
3-4 wk
13 Apr
18 Aug
0 wk
26 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
10 – 24 May
4-6 wk
21 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
27 Feb – 13 Mar
4 Apr
6-8 wk
24 Apr
16 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 Apr
12 May
2-4 wk
2 May
26 May
3 wk after
19 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
2 – 16 Mar
26 Jun
4-6 wk
13 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
16 – 23 Mar
28 Jun
3-4 wk
13 Apr
19 Jul
0 wk
6 Apr
9 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
Fleece
21 Mar – 4 Apr
10 May
4-6 wk
2 May
7 Jun
3 wk after
Lemon balm
Melissa officinalis
2 – 16 Feb
24 May
8-10 wk
13 Apr
19 Jul
0 wk
4 May
9 Jul
3 wk after
Dill
Anethum graveolens
6 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
16 Feb – 2 Mar
5 Jun
6-8 wk
13 Apr
17 Jul
0 wk
15 Mar
7 Jul
4 wk before
Spearmint
Mentha spicata
19 Jan – 16 Feb
24 May
8-12 wk
13 Apr
19 Jul
0 wk
4 May
9 Jul
3 wk after
Coriander
Coriandrum sativum
13 Apr
18 Aug
0 wk
23 Apr
8 Aug
1 wk after
Garden sage
Salvia officinalis
8 – 22 Feb
9 May
8-10 wk
19 Apr
4 Jul
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Feb
14 May
8-10 wk
13 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
16 Feb – 2 Mar
28 May
6-8 wk
13 Apr
9 Jul
0 wk
4 May
29 Jun
3 wk after
Parsley
Petroselinum crispum
16 Feb – 2 Mar
28 May
6-8 wk
13 Apr
9 Jul
0 wk
6 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Jan – 8 Feb
10 Apr
10-14 wk
19 Apr
19 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
Fleece
4 – 11 Apr
17 May
3-4 wk
2 May
7 Jun
3 wk after
Cornflower
Centaurea cyanus
13 Apr
19 Jul
0 wk
6 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
21 Feb – 7 Mar
7 Apr
8-10 wk
2 May
2 Jun
3 wk after
Sweet William
Dianthus barbatus
16 Feb – 2 Mar
6-8 wk
13 Apr
0 wk
18 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Mar
21 Apr
6-8 wk
2 May
2 Jun
3 wk after
21 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Mar
6 May
6-8 wk
27 Apr
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
9 Mar – 6 Apr
20 May
4-8 wk
4 May
17 Jun
3 wk after
4 May
7 Jun
3 wk after
Foxglove
Digitalis purpurea
2 – 16 Feb
8-10 wk
13 Apr
0 wk
23 Apr
1 wk after
Busy lizzie
Impatiens walleriana
24 Feb – 24 Mar
28 May
8-12 wk
19 May
23 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Mar
1 May
6-8 wk
2 May
12 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
21 Mar – 4 Apr
10 Apr
4-6 wk
2 May
8 May
3 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Feb
24 Apr
8-10 wk
19 Apr
19 Jun
1 wk after
Love in a mist
Nigella damascena
13 Apr
4 Jul
0 wk
6 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
7 – 21 Mar
11 Apr
6-8 wk
2 May
23 May
3 wk after
21 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
25 Jan – 22 Feb
24 Apr
8-12 wk
19 Apr
19 Jun
1 wk after
Cardoon
Cynara cardunculus
7 Feb – 7 Mar
25 Mar
8-12 wk
2 May
20 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
7 Feb – 7 Mar
2 Apr
8-12 wk
2 May
28 May
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
7 – 21 Mar
16 Apr
6-8 wk
2 May
28 May
3 wk after
Corn poppy
Papaver rhoeas
13 Apr
19 Jul
0 wk
6 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
19 Jan – 16 Feb
14 May
8-12 wk
13 Apr
9 Jul
0 wk
18 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Mar
17 Apr
8-10 wk
19 May
12 Jun
5 wk after
Sweet pea
Lathyrus odoratus
16 Feb – 9 Mar
4 Jun
5-8 wk
13 Apr
9 Jul
0 wk
Stock
Matthiola incana
16 Feb – 2 Mar
7 Jun
6-8 wk
13 Apr
19 Jul
0 wk
23 Apr
9 Jul
1 wk after
Wormwood
Artemisia absinthium
16 Feb – 2 Mar
8 May
6-8 wk
13 Apr
19 Jun
0 wk
23 Apr
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
21 Mar – 4 Apr
25 Apr
4-6 wk
2 May
23 May
3 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Feb
24 May
8-10 wk
13 Apr
19 Jul
0 wk
18 Apr
9 Jul
1 wk after
Petunia
Petunia
7 Feb – 7 Mar
7 Apr
8-12 wk
2 May
2 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
1 wk after
19 May
9 Jun
5 wk after
Common zinnia
Zinnia elegans
21 Mar – 4 Apr
10 May
4-6 wk
2 May
7 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
28 Mar – 11 Apr
17 May
3-5 wk
2 May
7 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
21 Mar – 4 Apr
20 May
4-6 wk
2 May
17 Jun
3 wk after
19 May
7 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
8 Mar – 5 Apr
10 Apr
8-12 wk
31 May
5 Jun
7 wk after
Bee balm
Monarda didyma
19 Jan – 16 Feb
24 Apr
8-12 wk
13 Apr
19 Jun
0 wk
4 May
9 Jun
3 wk after
Yarrow
Achillea millefolium
16 Feb – 2 Mar
8 Apr
6-8 wk
13 Apr
20 May
0 wk
23 Apr
10 May
1 wk after
Safflower
Carthamus tinctorius
13 Apr
19 Jun
0 wk
6 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
16 Feb – 2 Mar
26 May
6-8 wk
13 Apr
7 Jul
0 wk
5 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
2 – 16 Mar
11 Jun
4-6 wk
13 Apr
9 Jul
0 wk
23 Apr
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
7 – 21 Feb
19 Mar
10-12 wk
2 May
28 May
3 wk after
Sunflower
Helianthus annuus
4 – 11 Apr
18 Jun
3-4 wk
2 May
9 Jul
3 wk after
4 May
29 Jun
3 wk after
China aster
Callistephus chinensis
7 – 21 Mar
7 Jun
6-8 wk
2 May
19 Jul
3 wk after
19 May
9 Jul
5 wk after
Annual phlox
Phlox drummondii
27 Feb – 13 Mar
1 May
6-8 wk
24 Apr
12 Jun
2 wk after
19 May
2 Jun
5 wk after
Hollyhock
Alcea rosea
16 Feb – 2 Mar
6-8 wk
13 Apr
0 wk
23 Apr
1 wk after
Alpine delphinium
Delphinium elatum
19 Jan – 16 Feb
24 Apr
8-12 wk
13 Apr
19 Jun
0 wk
4 May
9 Jun
3 wk after
African marigold
Tagetes erecta
7 – 21 Mar
1 May
6-8 wk
2 May
12 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
1 wk after
19 May
29 Jun
5 wk after
Wood sage
Salvia nemorosa
2 – 16 Feb
14 Apr
8-10 wk
13 Apr
9 Jun
0 wk
4 May
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
21 Feb – 21 Mar
26 Apr
6-10 wk
2 May
7 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
13 Apr
19 Jul
0 wk
6 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Feb – 7 Mar
14 May
8-10 wk
2 May
9 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
16 Feb – 2 Mar
6 May
6-8 wk
13 Apr
17 Jun
0 wk
1 Apr
7 Jun
2 wk before