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Rel. frost
Last spring frost (0°C) 27 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 215 days 27 Mar – 28 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)
Season too short
6 – 20 Feb
15 Jun
5-7 wk
27 Mar
20 Jul
0 wk
15 Mar
10 Jul
2 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
13 – 27 Feb
27 Jun
4-6 wk
27 Mar
25 Jul
0 wk
15 Mar
15 Jul
2 wk before
Chili pepper
Capsicum annuum
Season too short
26 Jan – 23 Feb
30 Jan
8-12 wk
20 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
6 – 20 Feb
10 Jun
5-7 wk
27 Mar
15 Jul
0 wk
9 Mar
5 Jul
3 wk before
Garden cucumber
Cucumis sativus
Greenhouse
23 – 30 Mar
7 Jun
3-4 wk
20 Apr
28 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 Apr
7 Jun
4-5 wk
16 May
5 Jul
7 wk after
15 May
25 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
28 Apr – 5 May
8 May
3-4 wk
26 May
29 May
9 wk after
Onion
Allium cepa (Cepa-gruppen)
2 – 30 Jan
28 Mar
8-12 wk
27 Mar
23 May
0 wk
17 Apr
13 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 Mar
12 Jun
1 wk after
31 Mar
2 Jun
1 wk after
Maize
Zea mays
Greenhouse
27 Feb – 6 Mar
28 May
3-4 wk
27 Mar
18 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 Mar
4 Jul
3-4 wk
29 Mar
25 Jul
0 wk
17 Apr
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Mar
5 Jul
0 wk
27 Mar
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
6 – 20 Feb
10 Jun
5-7 wk
27 Mar
15 Jul
0 wk
9 Mar
5 Jul
3 wk before
Potato
Solanum tuberosum
1 – 15 Mar
20 May
4-6 wk
12 Apr
17 Jun
2 wk after
12 Apr
7 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Feb
20 Jun
5-7 wk
27 Mar
25 Jul
0 wk
31 Mar
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
6 – 13 Apr
12 Jun
3-4 wk
4 May
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 Mar
28 May
3-4 wk
29 Mar
18 Jun
0 wk
17 Apr
8 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
13 – 27 Feb
22 Jun
4-6 wk
27 Mar
20 Jul
0 wk
Lettuce
Lactuca sativa
27 Feb – 6 Mar
9 Jul
3-4 wk
27 Mar
30 Jul
0 wk
31 Mar
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
13 – 27 Feb
22 Jun
4-6 wk
27 Mar
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Feb – 13 Mar
1 Jun
2-4 wk
27 Mar
15 Jun
0 wk
27 Mar
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 Mar
12 Jun
1 wk after
31 Mar
2 Jun
1 wk after
Spinach
Spinacia oleracea
27 Feb – 6 Mar
24 Jul
3-4 wk
27 Mar
14 Aug
0 wk
23 Mar
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
28 Apr – 12 May
4-6 wk
9 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
30 Jan – 13 Feb
7 May
6-8 wk
27 Mar
18 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
23 Mar – 6 Apr
14 Jun
2-4 wk
20 Apr
28 Jun
3 wk after
1 May
18 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
13 – 27 Feb
22 Jun
4-6 wk
27 Mar
20 Jul
0 wk
Garden pea
Pisum sativum
27 Feb – 6 Mar
24 Jun
3-4 wk
27 Mar
15 Jul
0 wk
31 Mar
5 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
23 Mar – 6 Apr
21 May
4-6 wk
4 May
18 Jun
5 wk after
Lemon balm
Melissa officinalis
16 – 30 Jan
20 May
8-10 wk
27 Mar
15 Jul
0 wk
1 May
5 Jul
5 wk after
Dill
Anethum graveolens
31 Mar
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
Season too short
30 Jan – 13 Feb
3 Jun
6-8 wk
27 Mar
15 Jul
0 wk
15 Mar
5 Jul
2 wk before
Spearmint
Mentha spicata
Season too short
2 – 30 Jan
20 May
8-12 wk
27 Mar
15 Jul
0 wk
6 Apr
5 Jul
1 wk after
Coriander
Coriandrum sativum
27 Mar
14 Aug
0 wk
17 Apr
4 Aug
3 wk after
Garden sage
Salvia officinalis
Season too short
16 – 30 Jan
5 May
8-10 wk
27 Mar
30 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
16 – 30 Jan
10 May
8-10 wk
27 Mar
5 Jul
0 wk
Oregano
Origanum vulgare
Season too short
30 Jan – 13 Feb
24 May
6-8 wk
27 Mar
5 Jul
0 wk
6 Apr
25 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
30 Jan – 13 Feb
24 May
6-8 wk
27 Mar
5 Jul
0 wk
15 Mar
25 Jun
2 wk before
Rosemary
Salvia rosmarinus
21 Dec – 18 Jan
6 Apr
10-14 wk
29 Mar
15 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
6 – 13 Apr
28 May
3-4 wk
4 May
18 Jun
5 wk after
Cornflower
Centaurea cyanus
Season too short
27 Mar
15 Jul
0 wk
15 Mar
5 Jul
2 wk before
Statice
Limonium sinuatum
23 Feb – 9 Mar
14 Apr
8-10 wk
4 May
9 Jun
5 wk after
Sweet William
Dianthus barbatus
30 Jan – 13 Feb
6-8 wk
27 Mar
0 wk
12 Apr
2 wk after
Snow-on-the-mountain
Euphorbia marginata
9 – 23 Mar
28 Apr
6-8 wk
4 May
9 Jun
5 wk after
9 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Mar
16 May
6-8 wk
27 Apr
27 Jun
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 Mar – 3 Apr
30 May
4-8 wk
1 May
27 Jun
5 wk after
1 May
17 Jun
5 wk after
Foxglove
Digitalis purpurea
16 – 30 Jan
8-10 wk
27 Mar
0 wk
17 Apr
3 wk after
Busy lizzie
Impatiens walleriana
21 Feb – 21 Mar
8 Jun
8-12 wk
16 May
3 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
9 – 23 Mar
8 May
6-8 wk
4 May
19 Jun
5 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
23 Mar – 6 Apr
21 Apr
4-6 wk
4 May
19 May
5 wk after
Chinese lantern
Physalis alkekengi
18 Jan – 1 Feb
20 Apr
8-10 wk
29 Mar
15 Jun
0 wk
Love in a mist
Nigella damascena
27 Mar
30 Jun
0 wk
31 Mar
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
9 – 23 Mar
18 Apr
6-8 wk
4 May
30 May
5 wk after
9 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
4 Jan – 1 Feb
20 Apr
8-12 wk
29 Mar
15 Jun
0 wk
Cardoon
Cynara cardunculus
9 Feb – 9 Mar
21 Mar
8-12 wk
4 May
16 May
5 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
9 Feb – 9 Mar
13 Apr
8-12 wk
4 May
8 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Fleece
9 – 23 Mar
27 Apr
6-8 wk
4 May
8 Jun
5 wk after
Corn poppy
Papaver rhoeas
27 Mar
15 Jul
0 wk
31 Mar
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
2 – 30 Jan
10 May
8-12 wk
27 Mar
5 Jul
0 wk
12 Apr
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
7 – 21 Mar
24 Apr
8-10 wk
16 May
19 Jun
7 wk after
Sweet pea
Lathyrus odoratus
Season too short
30 Jan – 20 Feb
31 May
5-8 wk
27 Mar
5 Jul
0 wk
Stock
Matthiola incana
30 Jan – 13 Feb
3 Jun
6-8 wk
27 Mar
15 Jul
0 wk
17 Apr
5 Jul
3 wk after
Wormwood
Artemisia absinthium
Season too short
30 Jan – 13 Feb
4 May
6-8 wk
27 Mar
15 Jun
0 wk
27 Mar
5 Jun
0 wk
Mexican sunflower
Tithonia rotundifolia
Fleece
23 Mar – 6 Apr
6 May
4-6 wk
4 May
3 Jun
5 wk after
Garden pansy
Viola × wittrockiana
Season too short
16 – 30 Jan
20 May
8-10 wk
27 Mar
15 Jul
0 wk
23 Mar
5 Jul
1 wk before
Petunia
Petunia
9 Feb – 9 Mar
14 Apr
8-12 wk
4 May
9 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Feb
4 May
6-8 wk
29 Mar
15 Jun
0 wk
15 May
5 Jun
7 wk after
Common zinnia
Zinnia elegans
23 Mar – 6 Apr
21 May
4-6 wk
4 May
18 Jun
5 wk after
Common morning glory
Ipomoea purpurea
Fleece
30 Mar – 13 Apr
28 May
3-5 wk
4 May
18 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
23 Mar – 6 Apr
30 May
4-6 wk
4 May
27 Jun
5 wk after
15 May
17 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
21 Feb – 21 Mar
13 May
8-12 wk
16 May
8 Jul
7 wk after
Bee balm
Monarda didyma
2 – 30 Jan
20 Apr
8-12 wk
27 Mar
15 Jun
0 wk
1 May
5 Jun
5 wk after
Yarrow
Achillea millefolium
Season too short
30 Jan – 13 Feb
4 Apr
6-8 wk
27 Mar
16 May
0 wk
27 Mar
6 May
0 wk
Safflower
Carthamus tinctorius
27 Mar
15 Jun
0 wk
31 Mar
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
30 Jan – 13 Feb
24 May
6-8 wk
27 Mar
5 Jul
0 wk
9 Mar
25 Jun
3 wk before
Bishop's flower
Ammi majus
13 – 27 Feb
7 Jun
4-6 wk
27 Mar
5 Jul
0 wk
17 Apr
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
9 – 23 Feb
29 Mar
10-12 wk
4 May
7 Jun
5 wk after
Sunflower
Helianthus annuus
6 – 13 Apr
14 Jun
3-4 wk
4 May
5 Jul
5 wk after
1 May
25 Jun
5 wk after
China aster
Callistephus chinensis
9 – 23 Mar
3 Jun
6-8 wk
4 May
15 Jul
5 wk after
15 May
5 Jul
7 wk after
Annual phlox
Phlox drummondii
23 Feb – 9 Mar
8 May
6-8 wk
20 Apr
19 Jun
3 wk after
15 May
9 Jun
7 wk after
Hollyhock
Alcea rosea
30 Jan – 13 Feb
6-8 wk
27 Mar
0 wk
17 Apr
3 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Jan
20 Apr
8-12 wk
27 Mar
15 Jun
0 wk
1 May
5 Jun
5 wk after
African marigold
Tagetes erecta
9 – 23 Mar
8 May
6-8 wk
4 May
19 Jun
5 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Feb
24 May
6-8 wk
29 Mar
5 Jul
0 wk
15 May
25 Jun
7 wk after
Wood sage
Salvia nemorosa
16 – 30 Jan
10 Apr
8-10 wk
27 Mar
5 Jun
0 wk
1 May
26 May
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
23 Feb – 23 Mar
7 May
6-10 wk
4 May
18 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
27 Mar
15 Jul
0 wk
31 Mar
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
23 Feb – 9 Mar
10 May
8-10 wk
4 May
5 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
30 Jan – 13 Feb
4 May
6-8 wk
27 Mar
15 Jun
0 wk
27 Mar
5 Jun
0 wk