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Rel. frost
Last spring frost (0°C) 8 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 185 days 8 Apr – 10 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)
18 Feb – 4 Mar
20 Jun
5-7 wk
8 Apr
25 Jul
0 wk
2 Apr
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Feb – 11 Mar
2 Jul
4-6 wk
8 Apr
30 Jul
0 wk
2 Apr
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
1 Feb – 1 Mar
8 Feb
8-12 wk
26 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Feb – 4 Mar
15 Jun
5-7 wk
8 Apr
20 Jul
0 wk
26 Mar
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
29 Mar – 5 Apr
25 May
3-4 wk
26 Apr
15 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 Apr
9 Jun
4-5 wk
19 May
7 Jul
6 wk after
19 May
27 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 May
3-4 wk
29 May
7 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Jan – 11 Feb
5 Apr
8-12 wk
8 Apr
31 May
0 wk
21 Apr
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
2 Apr
20 Jun
1 wk before
2 Apr
10 Jun
1 wk before
Maize
Zea mays
Greenhouse
11 – 18 Mar
15 May
3-4 wk
8 Apr
5 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
11 – 18 Mar
9 Jul
3-4 wk
8 Apr
30 Jul
0 wk
21 Apr
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 Apr
10 Jul
0 wk
26 Mar
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Feb – 4 Mar
15 Jun
5-7 wk
8 Apr
20 Jul
0 wk
26 Mar
10 Jul
2 wk before
Potato
Solanum tuberosum
2 – 16 Mar
8 Jun
4-6 wk
13 Apr
6 Jul
1 wk after
13 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Feb – 4 Mar
25 Jun
5-7 wk
8 Apr
30 Jul
0 wk
2 Apr
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
7 – 14 Apr
30 May
3-4 wk
5 May
20 Jun
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
11 – 18 Mar
21 Jun
3-4 wk
8 Apr
12 Jul
0 wk
21 Apr
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Feb – 11 Mar
27 Jun
4-6 wk
8 Apr
25 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Mar
14 Jul
3-4 wk
8 Apr
4 Aug
0 wk
2 Apr
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Feb – 11 Mar
27 Jun
4-6 wk
8 Apr
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Feb – 12 Mar
6 Jun
2-4 wk
26 Mar
20 Jun
2 wk before
26 Mar
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
2 Apr
20 Jun
1 wk before
2 Apr
10 Jun
1 wk before
Spinach
Spinacia oleracea
11 – 18 Mar
29 Jul
3-4 wk
8 Apr
19 Aug
0 wk
19 Mar
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
10 – 24 May
4-6 wk
21 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
11 – 25 Feb
24 Apr
6-8 wk
8 Apr
5 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
29 Mar – 12 Apr
1 Jun
2-4 wk
26 Apr
15 Jun
3 wk after
4 May
5 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Feb – 11 Mar
27 Jun
4-6 wk
8 Apr
25 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Mar
29 Jun
3-4 wk
8 Apr
20 Jul
0 wk
2 Apr
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
Fleece
24 Mar – 7 Apr
8 May
4-6 wk
5 May
5 Jun
4 wk after
Lemon balm
Melissa officinalis
28 Jan – 11 Feb
25 May
8-10 wk
8 Apr
20 Jul
0 wk
4 May
10 Jul
4 wk after
Dill
Anethum graveolens
2 Apr
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
11 – 25 Feb
8 Jun
6-8 wk
8 Apr
20 Jul
0 wk
2 Apr
10 Jul
1 wk before
Spearmint
Mentha spicata
14 Jan – 11 Feb
25 May
8-12 wk
8 Apr
20 Jul
0 wk
4 May
10 Jul
4 wk after
Coriander
Coriandrum sativum
8 Apr
19 Aug
0 wk
21 Apr
9 Aug
2 wk after
Garden sage
Salvia officinalis
28 Jan – 11 Feb
10 May
8-10 wk
8 Apr
5 Jul
0 wk
Common thyme
Thymus vulgaris
28 Jan – 11 Feb
15 May
8-10 wk
8 Apr
10 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Feb
29 May
6-8 wk
8 Apr
10 Jul
0 wk
4 May
30 Jun
4 wk after
Parsley
Petroselinum crispum
11 – 25 Feb
29 May
6-8 wk
8 Apr
10 Jul
0 wk
2 Apr
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
31 Dec – 28 Jan
11 Apr
10-14 wk
8 Apr
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
Fleece
7 – 14 Apr
15 May
3-4 wk
5 May
5 Jun
4 wk after
Cornflower
Centaurea cyanus
8 Apr
20 Jul
0 wk
2 Apr
10 Jul
1 wk before
Statice
Limonium sinuatum
24 Feb – 10 Mar
7 Apr
8-10 wk
5 May
2 Jun
4 wk after
Sweet William
Dianthus barbatus
11 – 25 Feb
6-8 wk
8 Apr
0 wk
13 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
10 – 24 Mar
21 Apr
6-8 wk
5 May
2 Jun
4 wk after
21 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Mar
1 May
6-8 wk
30 Apr
12 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
9 Mar – 6 Apr
15 May
4-8 wk
4 May
12 Jun
4 wk after
4 May
2 Jun
4 wk after
Foxglove
Digitalis purpurea
28 Jan – 11 Feb
8-10 wk
8 Apr
0 wk
21 Apr
2 wk after
Busy lizzie
Impatiens walleriana
24 Feb – 24 Mar
26 May
8-12 wk
19 May
21 Jul
6 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Mar
1 May
6-8 wk
5 May
12 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
24 Mar – 7 Apr
8 Apr
4-6 wk
5 May
6 May
4 wk after
Chinese lantern
Physalis alkekengi
28 Jan – 11 Feb
25 Apr
8-10 wk
8 Apr
20 Jun
0 wk
Love in a mist
Nigella damascena
8 Apr
5 Jul
0 wk
2 Apr
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
10 – 24 Mar
11 Apr
6-8 wk
5 May
23 May
4 wk after
21 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
14 Jan – 11 Feb
25 Apr
8-12 wk
8 Apr
20 Jun
0 wk
Cardoon
Cynara cardunculus
10 Feb – 10 Mar
26 Mar
8-12 wk
5 May
21 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
10 Feb – 10 Mar
31 Mar
8-12 wk
5 May
26 May
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
10 – 24 Mar
14 Apr
6-8 wk
5 May
26 May
4 wk after
Corn poppy
Papaver rhoeas
8 Apr
20 Jul
0 wk
2 Apr
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
14 Jan – 11 Feb
15 May
8-12 wk
8 Apr
10 Jul
0 wk
13 Apr
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Mar
17 Apr
8-10 wk
19 May
12 Jun
6 wk after
Sweet pea
Lathyrus odoratus
11 Feb – 4 Mar
5 Jun
5-8 wk
8 Apr
10 Jul
0 wk
Stock
Matthiola incana
11 – 25 Feb
8 Jun
6-8 wk
8 Apr
20 Jul
0 wk
21 Apr
10 Jul
2 wk after
Wormwood
Artemisia absinthium
11 – 25 Feb
9 May
6-8 wk
8 Apr
20 Jun
0 wk
21 Apr
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
24 Mar – 7 Apr
23 Apr
4-6 wk
5 May
21 May
4 wk after
Garden pansy
Viola × wittrockiana
28 Jan – 11 Feb
25 May
8-10 wk
8 Apr
20 Jul
0 wk
13 Apr
10 Jul
1 wk after
Petunia
Petunia
10 Feb – 10 Mar
7 Apr
8-12 wk
5 May
2 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Feb
9 May
6-8 wk
8 Apr
20 Jun
0 wk
19 May
10 Jun
6 wk after
Common zinnia
Zinnia elegans
24 Mar – 7 Apr
8 May
4-6 wk
5 May
5 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
31 Mar – 14 Apr
15 May
3-5 wk
5 May
5 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
24 Mar – 7 Apr
15 May
4-6 wk
5 May
12 Jun
4 wk after
19 May
2 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
24 Feb – 24 Mar
30 Apr
8-12 wk
19 May
25 Jun
6 wk after
Bee balm
Monarda didyma
14 Jan – 11 Feb
25 Apr
8-12 wk
8 Apr
20 Jun
0 wk
4 May
10 Jun
4 wk after
Yarrow
Achillea millefolium
11 – 25 Feb
9 Apr
6-8 wk
8 Apr
21 May
0 wk
21 Apr
11 May
2 wk after
Safflower
Carthamus tinctorius
8 Apr
20 Jun
0 wk
2 Apr
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Feb
29 May
6-8 wk
8 Apr
10 Jul
0 wk
21 Feb
30 Jun
7 wk before
Bishop's flower
Ammi majus
25 Feb – 11 Mar
12 Jun
4-6 wk
8 Apr
10 Jul
0 wk
21 Apr
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Feb
14 Mar
10-12 wk
5 May
23 May
4 wk after
Sunflower
Helianthus annuus
7 – 14 Apr
19 Jun
3-4 wk
5 May
10 Jul
4 wk after
4 May
30 Jun
4 wk after
China aster
Callistephus chinensis
10 – 24 Mar
8 Jun
6-8 wk
5 May
20 Jul
4 wk after
19 May
10 Jul
6 wk after
Annual phlox
Phlox drummondii
1 – 15 Mar
1 May
6-8 wk
26 Apr
12 Jun
3 wk after
19 May
2 Jun
6 wk after
Hollyhock
Alcea rosea
11 – 25 Feb
6-8 wk
8 Apr
0 wk
21 Apr
2 wk after
Alpine delphinium
Delphinium elatum
14 Jan – 11 Feb
25 Apr
8-12 wk
8 Apr
20 Jun
0 wk
4 May
10 Jun
4 wk after
African marigold
Tagetes erecta
10 – 24 Mar
1 May
6-8 wk
5 May
12 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Feb
29 May
6-8 wk
8 Apr
10 Jul
0 wk
19 May
30 Jun
6 wk after
Wood sage
Salvia nemorosa
28 Jan – 11 Feb
15 Apr
8-10 wk
8 Apr
10 Jun
0 wk
4 May
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
24 Feb – 24 Mar
24 Apr
6-10 wk
5 May
5 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
8 Apr
20 Jul
0 wk
2 Apr
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
24 Feb – 10 Mar
12 May
8-10 wk
5 May
7 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Feb
9 May
6-8 wk
8 Apr
20 Jun
0 wk
21 Apr
10 Jun
2 wk after