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Rel. frost
Last spring frost (0°C) 30 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 197 days 30 Mar – 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)
9 – 23 Feb
20 Jun
5-7 wk
30 Mar
25 Jul
0 wk
24 Mar
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 Feb – 2 Mar
2 Jul
4-6 wk
30 Mar
30 Jul
0 wk
24 Mar
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
29 Jan – 26 Feb
1 Feb
8-12 wk
23 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Feb
15 Jun
5-7 wk
30 Mar
20 Jul
0 wk
17 Mar
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
26 Mar – 2 Apr
5 Jun
3-4 wk
23 Apr
26 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 Apr
11 Jun
4-5 wk
19 May
9 Jul
7 wk after
10 May
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 May
6 May
3-4 wk
29 May
9 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Jan – 2 Feb
5 Apr
8-12 wk
30 Mar
31 May
0 wk
12 Apr
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 Mar
20 Jun
1 wk before
24 Mar
10 Jun
1 wk before
Maize
Zea mays
Greenhouse
2 – 9 Mar
26 May
3-4 wk
30 Mar
16 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 Mar
9 Jul
3-4 wk
1 Apr
30 Jul
0 wk
12 Apr
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 Mar
10 Jul
0 wk
17 Mar
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Feb
15 Jun
5-7 wk
30 Mar
20 Jul
0 wk
17 Mar
10 Jul
2 wk before
Potato
Solanum tuberosum
21 Feb – 7 Mar
9 Jun
4-6 wk
4 Apr
7 Jul
1 wk after
4 Apr
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Feb
25 Jun
5-7 wk
30 Mar
30 Jul
0 wk
24 Mar
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
9 – 16 Apr
10 Jun
3-4 wk
7 May
1 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 Mar
18 Jun
3-4 wk
1 Apr
9 Jul
0 wk
12 Apr
29 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 Feb – 2 Mar
27 Jun
4-6 wk
30 Mar
25 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 Mar
14 Jul
3-4 wk
30 Mar
4 Aug
0 wk
24 Mar
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 Feb – 2 Mar
27 Jun
4-6 wk
30 Mar
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Feb – 3 Mar
6 Jun
2-4 wk
17 Mar
20 Jun
2 wk before
17 Mar
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Mar
20 Jun
1 wk before
24 Mar
10 Jun
1 wk before
Spinach
Spinacia oleracea
2 – 9 Mar
29 Jul
3-4 wk
30 Mar
19 Aug
0 wk
10 Mar
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 May
4-6 wk
12 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Feb
5 May
6-8 wk
30 Mar
16 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
26 Mar – 9 Apr
12 Jun
2-4 wk
23 Apr
26 Jun
3 wk after
25 Apr
16 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 Feb – 2 Mar
27 Jun
4-6 wk
30 Mar
25 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 Mar
29 Jun
3-4 wk
30 Mar
20 Jul
0 wk
24 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
26 Mar – 9 Apr
19 May
4-6 wk
7 May
16 Jun
5 wk after
Lemon balm
Melissa officinalis
19 Jan – 2 Feb
25 May
8-10 wk
30 Mar
20 Jul
0 wk
25 Apr
10 Jul
4 wk after
Dill
Anethum graveolens
24 Mar
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
2 – 16 Feb
8 Jun
6-8 wk
30 Mar
20 Jul
0 wk
24 Mar
10 Jul
1 wk before
Spearmint
Mentha spicata
5 Jan – 2 Feb
25 May
8-12 wk
30 Mar
20 Jul
0 wk
25 Apr
10 Jul
4 wk after
Coriander
Coriandrum sativum
30 Mar
19 Aug
0 wk
12 Apr
9 Aug
2 wk after
Garden sage
Salvia officinalis
21 Jan – 4 Feb
10 May
8-10 wk
1 Apr
5 Jul
0 wk
Common thyme
Thymus vulgaris
19 Jan – 2 Feb
15 May
8-10 wk
30 Mar
10 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Feb
29 May
6-8 wk
30 Mar
10 Jul
0 wk
25 Apr
30 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Feb
29 May
6-8 wk
30 Mar
10 Jul
0 wk
24 Mar
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
24 Dec – 21 Jan
11 Apr
10-14 wk
1 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
9 – 16 Apr
26 May
3-4 wk
7 May
16 Jun
5 wk after
Cornflower
Centaurea cyanus
30 Mar
20 Jul
0 wk
24 Mar
10 Jul
1 wk before
Statice
Limonium sinuatum
26 Feb – 12 Mar
17 Apr
8-10 wk
7 May
12 Jun
5 wk after
Sweet William
Dianthus barbatus
2 – 16 Feb
6-8 wk
30 Mar
0 wk
4 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Mar
1 May
6-8 wk
7 May
12 Jun
5 wk after
12 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Mar
6 May
6-8 wk
30 Apr
17 Jun
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
28 Feb – 28 Mar
20 May
4-8 wk
25 Apr
17 Jun
4 wk after
25 Apr
7 Jun
4 wk after
Foxglove
Digitalis purpurea
19 Jan – 2 Feb
8-10 wk
30 Mar
0 wk
12 Apr
2 wk after
Busy lizzie
Impatiens walleriana
24 Feb – 24 Mar
6 Jun
8-12 wk
19 May
1 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Mar
11 May
6-8 wk
7 May
22 Jun
5 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
26 Mar – 9 Apr
19 Apr
4-6 wk
7 May
17 May
5 wk after
Chinese lantern
Physalis alkekengi
21 Jan – 4 Feb
25 Apr
8-10 wk
1 Apr
20 Jun
0 wk
Love in a mist
Nigella damascena
30 Mar
5 Jul
0 wk
24 Mar
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
12 – 26 Mar
21 Apr
6-8 wk
7 May
2 Jun
5 wk after
12 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
7 Jan – 4 Feb
25 Apr
8-12 wk
1 Apr
20 Jun
0 wk
Cardoon
Cynara cardunculus
12 Feb – 12 Mar
26 Mar
8-12 wk
7 May
21 May
5 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
12 Feb – 12 Mar
11 Apr
8-12 wk
7 May
6 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Fleece
12 – 26 Mar
25 Apr
6-8 wk
7 May
6 Jun
5 wk after
Corn poppy
Papaver rhoeas
30 Mar
20 Jul
0 wk
24 Mar
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Jan – 2 Feb
15 May
8-12 wk
30 Mar
10 Jul
0 wk
4 Apr
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Mar
27 Apr
8-10 wk
19 May
22 Jun
7 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Feb
5 Jun
5-8 wk
30 Mar
10 Jul
0 wk
Stock
Matthiola incana
2 – 16 Feb
8 Jun
6-8 wk
30 Mar
20 Jul
0 wk
12 Apr
10 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Feb
9 May
6-8 wk
30 Mar
20 Jun
0 wk
12 Apr
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
26 Mar – 9 Apr
4 May
4-6 wk
7 May
1 Jun
5 wk after
Garden pansy
Viola × wittrockiana
19 Jan – 2 Feb
25 May
8-10 wk
30 Mar
20 Jul
0 wk
4 Apr
10 Jul
1 wk after
Petunia
Petunia
12 Feb – 12 Mar
17 Apr
8-12 wk
7 May
12 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Feb
9 May
6-8 wk
1 Apr
20 Jun
0 wk
10 May
10 Jun
6 wk after
Common zinnia
Zinnia elegans
26 Mar – 9 Apr
19 May
4-6 wk
7 May
16 Jun
5 wk after
Common morning glory
Ipomoea purpurea
Fleece
2 – 16 Apr
26 May
3-5 wk
7 May
16 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
26 Mar – 9 Apr
20 May
4-6 wk
7 May
17 Jun
5 wk after
10 May
7 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
24 Feb – 24 Mar
11 May
8-12 wk
19 May
6 Jul
7 wk after
Bee balm
Monarda didyma
5 Jan – 2 Feb
25 Apr
8-12 wk
30 Mar
20 Jun
0 wk
25 Apr
10 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Feb
9 Apr
6-8 wk
30 Mar
21 May
0 wk
12 Apr
11 May
2 wk after
Safflower
Carthamus tinctorius
30 Mar
20 Jun
0 wk
24 Mar
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Feb
29 May
6-8 wk
30 Mar
10 Jul
0 wk
12 Feb
30 Jun
7 wk before
Bishop's flower
Ammi majus
16 Feb – 2 Mar
12 Jun
4-6 wk
30 Mar
10 Jul
0 wk
12 Apr
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
12 – 26 Feb
19 Mar
10-12 wk
7 May
28 May
5 wk after
Sunflower
Helianthus annuus
9 – 16 Apr
19 Jun
3-4 wk
7 May
10 Jul
5 wk after
25 Apr
30 Jun
4 wk after
China aster
Callistephus chinensis
12 – 26 Mar
8 Jun
6-8 wk
7 May
20 Jul
5 wk after
10 May
10 Jul
6 wk after
Annual phlox
Phlox drummondii
26 Feb – 12 Mar
11 May
6-8 wk
23 Apr
22 Jun
3 wk after
10 May
12 Jun
6 wk after
Hollyhock
Alcea rosea
2 – 16 Feb
6-8 wk
30 Mar
0 wk
12 Apr
2 wk after
Alpine delphinium
Delphinium elatum
5 Jan – 2 Feb
25 Apr
8-12 wk
30 Mar
20 Jun
0 wk
25 Apr
10 Jun
4 wk after
African marigold
Tagetes erecta
12 – 26 Mar
11 May
6-8 wk
7 May
22 Jun
5 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Feb
29 May
6-8 wk
1 Apr
10 Jul
0 wk
10 May
30 Jun
6 wk after
Wood sage
Salvia nemorosa
19 Jan – 2 Feb
15 Apr
8-10 wk
30 Mar
10 Jun
0 wk
25 Apr
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
26 Feb – 26 Mar
5 May
6-10 wk
7 May
16 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
30 Mar
20 Jul
0 wk
24 Mar
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
26 Feb – 12 Mar
14 May
8-10 wk
7 May
9 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Feb
9 May
6-8 wk
30 Mar
20 Jun
0 wk
12 Apr
10 Jun
2 wk after