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Rel. frost
Last spring frost (0°C) 24 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 214 days 24 Mar – 24 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)
3 – 17 Feb
20 Jun
5-7 wk
24 Mar
25 Jul
0 wk
18 Mar
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Feb
2 Jul
4-6 wk
24 Mar
30 Jul
0 wk
18 Mar
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
23 Jan – 20 Feb
4 Feb
8-12 wk
17 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Feb
15 Jun
5-7 wk
24 Mar
20 Jul
0 wk
11 Mar
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
20 – 27 Mar
5 Jun
3-4 wk
17 Apr
26 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 Apr
12 Jun
4-5 wk
13 May
10 Jul
7 wk after
4 May
30 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
25 Apr – 2 May
6 May
3-4 wk
23 May
27 May
9 wk after
Onion
Allium cepa (Cepa-gruppen)
30 Dec – 27 Jan
5 Apr
8-12 wk
24 Mar
31 May
0 wk
6 Apr
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Mar
20 Jun
1 wk before
18 Mar
10 Jun
1 wk before
Maize
Zea mays
Greenhouse
24 Feb – 3 Mar
26 May
3-4 wk
24 Mar
16 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Feb – 5 Mar
9 Jul
3-4 wk
26 Mar
30 Jul
0 wk
6 Apr
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
10 Jul
0 wk
11 Mar
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Feb
15 Jun
5-7 wk
24 Mar
20 Jul
0 wk
11 Mar
10 Jul
2 wk before
Potato
Solanum tuberosum
15 Feb – 1 Mar
12 Jun
4-6 wk
29 Mar
10 Jul
1 wk after
29 Mar
30 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Feb
25 Jun
5-7 wk
24 Mar
30 Jul
0 wk
18 Mar
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
3 – 10 Apr
10 Jun
3-4 wk
1 May
1 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Feb – 5 Mar
26 Jun
3-4 wk
26 Mar
17 Jul
0 wk
6 Apr
7 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Feb
27 Jun
4-6 wk
24 Mar
25 Jul
0 wk
Lettuce
Lactuca sativa
24 Feb – 3 Mar
14 Jul
3-4 wk
24 Mar
4 Aug
0 wk
18 Mar
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Feb
27 Jun
4-6 wk
24 Mar
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Feb
6 Jun
2-4 wk
11 Mar
20 Jun
2 wk before
11 Mar
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Mar
20 Jun
1 wk before
18 Mar
10 Jun
1 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
29 Jul
3-4 wk
24 Mar
19 Aug
0 wk
4 Mar
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
25 Apr – 9 May
4-6 wk
6 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
27 Jan – 10 Feb
5 May
6-8 wk
24 Mar
16 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
20 Mar – 3 Apr
12 Jun
2-4 wk
17 Apr
26 Jun
3 wk after
19 Apr
16 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Feb
27 Jun
4-6 wk
24 Mar
25 Jul
0 wk
Garden pea
Pisum sativum
24 Feb – 3 Mar
29 Jun
3-4 wk
24 Mar
20 Jul
0 wk
18 Mar
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
20 Mar – 3 Apr
19 May
4-6 wk
1 May
16 Jun
5 wk after
Lemon balm
Melissa officinalis
13 – 27 Jan
25 May
8-10 wk
24 Mar
20 Jul
0 wk
19 Apr
10 Jul
4 wk after
Dill
Anethum graveolens
18 Mar
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
27 Jan – 10 Feb
8 Jun
6-8 wk
24 Mar
20 Jul
0 wk
18 Feb
10 Jul
5 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
25 May
8-12 wk
24 Mar
20 Jul
0 wk
19 Apr
10 Jul
4 wk after
Coriander
Coriandrum sativum
24 Mar
19 Aug
0 wk
6 Apr
9 Aug
2 wk after
Garden sage
Salvia officinalis
15 – 29 Jan
10 May
8-10 wk
26 Mar
5 Jul
0 wk
Common thyme
Thymus vulgaris
13 – 27 Jan
15 May
8-10 wk
24 Mar
10 Jul
0 wk
Oregano
Origanum vulgare
27 Jan – 10 Feb
29 May
6-8 wk
24 Mar
10 Jul
0 wk
19 Apr
30 Jun
4 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
29 May
6-8 wk
24 Mar
10 Jul
0 wk
18 Mar
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
18 Dec – 15 Jan
11 Apr
10-14 wk
26 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
Fleece
3 – 10 Apr
26 May
3-4 wk
1 May
16 Jun
5 wk after
Cornflower
Centaurea cyanus
24 Mar
20 Jul
0 wk
18 Mar
10 Jul
1 wk before
Statice
Limonium sinuatum
20 Feb – 6 Mar
22 Apr
8-10 wk
1 May
17 Jun
5 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
0 wk
29 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Mar
6 May
6-8 wk
1 May
17 Jun
5 wk after
6 Jun
7 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
27 Feb – 13 Mar
11 May
6-8 wk
24 Apr
22 Jun
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Feb – 22 Mar
25 May
4-8 wk
19 Apr
22 Jun
4 wk after
19 Apr
12 Jun
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
0 wk
6 Apr
2 wk after
Busy lizzie
Impatiens walleriana
18 Feb – 18 Mar
6 Jun
8-12 wk
13 May
1 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Mar
16 May
6-8 wk
1 May
27 Jun
5 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
20 Mar – 3 Apr
19 Apr
4-6 wk
1 May
17 May
5 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Jan
25 Apr
8-10 wk
26 Mar
20 Jun
0 wk
Love in a mist
Nigella damascena
24 Mar
5 Jul
0 wk
18 Mar
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
6 – 20 Mar
26 Apr
6-8 wk
1 May
7 Jun
5 wk after
6 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Jan
25 Apr
8-12 wk
26 Mar
20 Jun
0 wk
Cardoon
Cynara cardunculus
6 Feb – 6 Mar
26 Mar
8-12 wk
1 May
21 May
5 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
6 Feb – 6 Mar
11 Apr
8-12 wk
1 May
6 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Fleece
6 – 20 Mar
25 Apr
6-8 wk
1 May
6 Jun
5 wk after
Corn poppy
Papaver rhoeas
24 Mar
20 Jul
0 wk
18 Mar
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
30 Dec – 27 Jan
15 May
8-12 wk
24 Mar
10 Jul
0 wk
29 Mar
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
4 – 18 Mar
2 May
8-10 wk
13 May
27 Jun
7 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
5 Jun
5-8 wk
24 Mar
10 Jul
0 wk
Stock
Matthiola incana
27 Jan – 10 Feb
8 Jun
6-8 wk
24 Mar
20 Jul
0 wk
6 Apr
10 Jul
2 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
9 May
6-8 wk
24 Mar
20 Jun
0 wk
6 Apr
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
20 Mar – 3 Apr
4 May
4-6 wk
1 May
1 Jun
5 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Jan
25 May
8-10 wk
24 Mar
20 Jul
0 wk
29 Mar
10 Jul
1 wk after
Petunia
Petunia
6 Feb – 6 Mar
22 Apr
8-12 wk
1 May
17 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Jan – 12 Feb
9 May
6-8 wk
26 Mar
20 Jun
0 wk
4 May
10 Jun
6 wk after
Common zinnia
Zinnia elegans
20 Mar – 3 Apr
19 May
4-6 wk
1 May
16 Jun
5 wk after
Common morning glory
Ipomoea purpurea
Fleece
27 Mar – 10 Apr
26 May
3-5 wk
1 May
16 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
20 Mar – 3 Apr
25 May
4-6 wk
1 May
22 Jun
5 wk after
4 May
12 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
18 Feb – 18 Mar
11 May
8-12 wk
13 May
6 Jul
7 wk after
Bee balm
Monarda didyma
30 Dec – 27 Jan
25 Apr
8-12 wk
24 Mar
20 Jun
0 wk
19 Apr
10 Jun
4 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
9 Apr
6-8 wk
24 Mar
21 May
0 wk
6 Apr
11 May
2 wk after
Safflower
Carthamus tinctorius
24 Mar
20 Jun
0 wk
18 Mar
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
27 Jan – 10 Feb
29 May
6-8 wk
24 Mar
10 Jul
0 wk
6 Feb
30 Jun
7 wk before
Bishop's flower
Ammi majus
10 – 24 Feb
12 Jun
4-6 wk
24 Mar
10 Jul
0 wk
6 Apr
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
6 – 20 Feb
24 Mar
10-12 wk
1 May
2 Jun
5 wk after
Sunflower
Helianthus annuus
3 – 10 Apr
19 Jun
3-4 wk
1 May
10 Jul
5 wk after
19 Apr
30 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Mar
8 Jun
6-8 wk
1 May
20 Jul
5 wk after
4 May
10 Jul
6 wk after
Annual phlox
Phlox drummondii
20 Feb – 6 Mar
16 May
6-8 wk
17 Apr
27 Jun
3 wk after
4 May
17 Jun
6 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
0 wk
6 Apr
2 wk after
Alpine delphinium
Delphinium elatum
30 Dec – 27 Jan
25 Apr
8-12 wk
24 Mar
20 Jun
0 wk
19 Apr
10 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Mar
16 May
6-8 wk
1 May
27 Jun
5 wk after
Black-eyed Susan
Rudbeckia hirta
29 Jan – 12 Feb
29 May
6-8 wk
26 Mar
10 Jul
0 wk
4 May
30 Jun
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Jan
15 Apr
8-10 wk
24 Mar
10 Jun
0 wk
19 Apr
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
20 Feb – 20 Mar
5 May
6-10 wk
1 May
16 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
24 Mar
20 Jul
0 wk
18 Mar
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
20 Feb – 6 Mar
15 May
8-10 wk
1 May
10 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
27 Jan – 10 Feb
9 May
6-8 wk
24 Mar
20 Jun
0 wk
11 Mar
10 Jun
2 wk before