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Rel. frost
Last spring frost (0°C) 5 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 190 days 5 Apr – 12 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)
15 Feb – 1 Mar
18 Jun
5-7 wk
5 Apr
23 Jul
0 wk
29 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Feb – 8 Mar
30 Jun
4-6 wk
5 Apr
28 Jul
0 wk
29 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
22 Jan – 19 Feb
25 Mar
8-12 wk
16 Apr
20 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 Feb – 1 Mar
13 Jun
5-7 wk
5 Apr
18 Jul
0 wk
24 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
27 Mar – 3 Apr
19 May
3-4 wk
24 Apr
9 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 Apr
9 Jun
4-5 wk
11 May
7 Jul
5 wk after
11 May
27 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 Apr
29 Apr
3-4 wk
18 May
20 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Jan – 8 Feb
3 Apr
8-12 wk
5 Apr
29 May
0 wk
15 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Mar
18 Jun
1 wk before
29 Mar
8 Jun
1 wk before
Maize
Zea mays
Fleece
19 – 26 Mar
9 May
3-4 wk
16 Apr
30 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Mar
7 Jul
3-4 wk
11 Apr
28 Jul
1 wk after
15 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 Apr
8 Jul
0 wk
24 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 Feb – 1 Mar
13 Jun
5-7 wk
5 Apr
18 Jul
0 wk
24 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
27 Feb – 13 Mar
8 Jun
4-6 wk
10 Apr
6 Jul
1 wk after
10 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 Feb – 1 Mar
23 Jun
5-7 wk
5 Apr
28 Jul
0 wk
29 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
13 – 20 Apr
24 May
3-4 wk
11 May
14 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Mar
20 Jun
3-4 wk
11 Apr
11 Jul
1 wk after
15 Apr
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Feb – 8 Mar
25 Jun
4-6 wk
5 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Mar
12 Jul
3-4 wk
5 Apr
2 Aug
0 wk
29 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Feb – 8 Mar
25 Jun
4-6 wk
5 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
4 Jun
2-4 wk
24 Mar
18 Jun
2 wk before
24 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Mar
18 Jun
1 wk before
29 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
8 – 15 Mar
27 Jul
3-4 wk
5 Apr
17 Aug
0 wk
18 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 May
4-6 wk
13 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
19 Feb – 5 Mar
18 Apr
6-8 wk
16 Apr
30 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
27 Mar – 10 Apr
26 May
2-4 wk
24 Apr
9 Jun
3 wk after
11 May
30 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Feb – 8 Mar
25 Jun
4-6 wk
5 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Mar
27 Jun
3-4 wk
5 Apr
18 Jul
0 wk
29 Mar
8 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
30 Mar – 13 Apr
2 May
4-6 wk
11 May
30 May
5 wk after
Lemon balm
Melissa officinalis
25 Jan – 8 Feb
23 May
8-10 wk
5 Apr
18 Jul
0 wk
26 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
29 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Feb
6 Jun
6-8 wk
5 Apr
18 Jul
0 wk
29 Mar
8 Jul
1 wk before
Spearmint
Mentha spicata
11 Jan – 8 Feb
23 May
8-12 wk
5 Apr
18 Jul
0 wk
26 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
5 Apr
17 Aug
0 wk
15 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
31 Jan – 14 Feb
8 May
8-10 wk
11 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
25 Jan – 8 Feb
13 May
8-10 wk
5 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Feb
27 May
6-8 wk
5 Apr
8 Jul
0 wk
26 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
8 – 22 Feb
27 May
6-8 wk
5 Apr
8 Jul
0 wk
29 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 – 31 Jan
9 Apr
10-14 wk
11 Apr
18 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
13 – 20 Apr
9 May
3-4 wk
11 May
30 May
5 wk after
Cornflower
Centaurea cyanus
5 Apr
18 Jul
0 wk
29 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Feb
16 Apr
8-10 wk
24 Apr
11 Jun
3 wk after
Sweet William
Dianthus barbatus
8 – 22 Feb
6-8 wk
5 Apr
0 wk
10 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Feb – 13 Mar
30 Apr
6-8 wk
24 Apr
11 Jun
3 wk after
13 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
22 Feb – 8 Mar
2 May
6-8 wk
19 Apr
13 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 – 29 Mar
16 May
4-8 wk
26 Apr
13 Jun
3 wk after
26 Apr
3 Jun
3 wk after
Foxglove
Digitalis purpurea
25 Jan – 8 Feb
8-10 wk
5 Apr
0 wk
15 Apr
1 wk after
Busy lizzie
Impatiens walleriana
16 Feb – 16 Mar
30 May
8-12 wk
11 May
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
27 Feb – 13 Mar
10 May
6-8 wk
24 Apr
21 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
13 – 27 Mar
12 Apr
4-6 wk
24 Apr
10 May
3 wk after
Chinese lantern
Physalis alkekengi
31 Jan – 14 Feb
23 Apr
8-10 wk
11 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
5 Apr
3 Jul
0 wk
29 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
27 Feb – 13 Mar
20 Apr
6-8 wk
24 Apr
1 Jun
3 wk after
13 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
17 Jan – 14 Feb
23 Apr
8-12 wk
11 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
30 Jan – 27 Feb
24 Mar
8-12 wk
24 Apr
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
16 Feb – 16 Mar
25 Mar
8-12 wk
11 May
20 May
5 wk after
Globe amaranth
Gomphrena globosa
16 – 30 Mar
8 Apr
6-8 wk
11 May
20 May
5 wk after
Corn poppy
Papaver rhoeas
5 Apr
18 Jul
0 wk
29 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Jan – 8 Feb
13 May
8-12 wk
5 Apr
8 Jul
0 wk
10 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
2 – 16 Mar
26 Apr
8-10 wk
11 May
21 Jun
5 wk after
Sweet pea
Lathyrus odoratus
8 Feb – 1 Mar
3 Jun
5-8 wk
5 Apr
8 Jul
0 wk
Stock
Matthiola incana
8 – 22 Feb
6 Jun
6-8 wk
5 Apr
18 Jul
0 wk
15 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
8 – 22 Feb
7 May
6-8 wk
5 Apr
18 Jun
0 wk
15 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
13 – 27 Mar
27 Apr
4-6 wk
24 Apr
25 May
3 wk after
Garden pansy
Viola × wittrockiana
25 Jan – 8 Feb
23 May
8-10 wk
5 Apr
18 Jul
0 wk
10 Apr
8 Jul
1 wk after
Petunia
Petunia
30 Jan – 27 Feb
16 Apr
8-12 wk
24 Apr
11 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Feb
7 May
6-8 wk
11 Apr
18 Jun
1 wk after
11 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
13 – 27 Mar
12 May
4-6 wk
24 Apr
9 Jun
3 wk after
Common morning glory
Ipomoea purpurea
6 – 20 Apr
9 May
3-5 wk
11 May
30 May
5 wk after
Garden cosmos
Cosmos bipinnatus
13 – 27 Mar
16 May
4-6 wk
24 Apr
13 Jun
3 wk after
11 May
3 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
28 Feb – 28 Mar
24 Apr
8-12 wk
23 May
19 Jun
7 wk after
Bee balm
Monarda didyma
11 Jan – 8 Feb
23 Apr
8-12 wk
5 Apr
18 Jun
0 wk
26 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
8 – 22 Feb
7 Apr
6-8 wk
5 Apr
19 May
0 wk
15 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
5 Apr
18 Jun
0 wk
29 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Feb
27 May
6-8 wk
5 Apr
8 Jul
0 wk
25 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
22 Feb – 8 Mar
10 Jun
4-6 wk
5 Apr
8 Jul
0 wk
15 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
30 Jan – 13 Feb
15 Mar
10-12 wk
24 Apr
24 May
3 wk after
Sunflower
Helianthus annuus
27 Mar – 3 Apr
17 Jun
3-4 wk
24 Apr
8 Jul
3 wk after
26 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
27 Feb – 13 Mar
6 Jun
6-8 wk
24 Apr
18 Jul
3 wk after
11 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
19 Feb – 5 Mar
10 May
6-8 wk
16 Apr
21 Jun
2 wk after
11 May
11 Jun
5 wk after
Hollyhock
Alcea rosea
8 – 22 Feb
6-8 wk
5 Apr
0 wk
15 Apr
1 wk after
Alpine delphinium
Delphinium elatum
11 Jan – 8 Feb
23 Apr
8-12 wk
5 Apr
18 Jun
0 wk
26 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
27 Feb – 13 Mar
10 May
6-8 wk
24 Apr
21 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Feb
27 May
6-8 wk
11 Apr
8 Jul
1 wk after
11 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
25 Jan – 8 Feb
13 Apr
8-10 wk
5 Apr
8 Jun
0 wk
26 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
2 – 30 Mar
18 Apr
6-10 wk
11 May
30 May
5 wk after
California goldenpoppy
Eschscholzia californica
5 Apr
18 Jul
0 wk
29 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Feb
12 May
8-10 wk
24 Apr
7 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Feb
7 May
6-8 wk
5 Apr
18 Jun
0 wk
15 Apr
8 Jun
1 wk after