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Rel. frost
Last spring frost (0°C) 3 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 193 days 3 Apr – 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)
17 – 31 Mar
21 Jun
5-7 wk
5 May
26 Jul
5 wk after
28 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Mar
3 Jul
4-6 wk
23 Apr
31 Jul
3 wk after
28 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
19 Feb – 19 Mar
24 Mar
8-12 wk
14 May
19 May
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Jan
16 Jun
5-7 wk
4 Mar
21 Jul
4 wk before
21 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
1 – 8 May
18 May
3-4 wk
29 May
8 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 May
13 Jun
4-5 wk
9 Jun
11 Jul
10 wk after
14 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
16 – 23 May
3-4 wk
13 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Jan – 6 Feb
4 Apr
8-12 wk
3 Apr
30 May
Vid frost
16 Apr
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Mar
19 Jun
1 wk before
28 Mar
9 Jun
1 wk before
Maize
Zea mays
Fleece
16 – 23 Apr
8 May
3-4 wk
14 May
29 May
6 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Apr
10 Jul
3-4 wk
5 May
31 Jul
5 wk after
16 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Jan
16 Jun
5-7 wk
4 Mar
21 Jul
4 wk before
21 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
25 Feb – 11 Mar
8 Jun
4-6 wk
8 Apr
6 Jul
1 wk after
8 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Jan
26 Jun
5-7 wk
4 Mar
31 Jul
4 wk before
28 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
12 – 19 May
23 May
3-4 wk
9 Jun
13 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Apr
21 Jun
3-4 wk
5 May
12 Jul
5 wk after
16 Apr
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Mar
28 Jun
4-6 wk
23 Apr
26 Jul
3 wk after
Lettuce
Lactuca sativa
25 Feb – 4 Mar
15 Jul
3-4 wk
25 Mar
5 Aug
1 wk before
28 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Feb
28 Jun
4-6 wk
25 Mar
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Feb – 7 Mar
7 Jun
2-4 wk
21 Mar
21 Jun
2 wk before
21 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Mar
19 Jun
1 wk before
28 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Feb
30 Jul
3-4 wk
14 Mar
20 Aug
3 wk before
14 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 May
4-6 wk
16 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
19 Mar – 2 Apr
17 Apr
6-8 wk
14 May
29 May
6 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 May
25 May
2-4 wk
29 May
8 Jun
8 wk after
14 May
29 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Mar
28 Jun
4-6 wk
23 Apr
26 Jul
3 wk after
Garden pea
Pisum sativum
14 – 21 Feb
30 Jun
3-4 wk
14 Mar
21 Jul
3 wk before
28 Mar
11 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
17 Apr – 1 May
19 May
4-6 wk
29 May
16 Jun
8 wk after
Lemon balm
Melissa officinalis
23 Jan – 6 Feb
26 May
8-10 wk
3 Apr
21 Jul
Vid frost
29 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
28 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
7 – 21 Jan
9 Jun
6-8 wk
4 Mar
21 Jul
4 wk before
28 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
20 Dec – 17 Jan
26 May
8-12 wk
14 Mar
21 Jul
3 wk before
29 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
16 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
24 Feb – 10 Mar
11 May
8-10 wk
5 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
12 – 26 Feb
16 May
8-10 wk
23 Apr
11 Jul
3 wk after
Oregano
Origanum vulgare
15 Feb – 1 Mar
30 May
6-8 wk
12 Apr
11 Jul
1 wk after
29 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
17 – 31 Jan
30 May
6-8 wk
14 Mar
11 Jul
3 wk before
28 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
27 Jan – 24 Feb
12 Apr
10-14 wk
5 May
21 Jun
5 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
Fleece
1 – 8 May
26 May
3-4 wk
29 May
16 Jun
8 wk after
Cornflower
Centaurea cyanus
14 Mar
21 Jul
3 wk before
28 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
20 Mar – 3 Apr
18 Apr
8-10 wk
29 May
13 Jun
8 wk after
Sweet William
Dianthus barbatus
17 – 31 Jan
6-8 wk
14 Mar
3 wk before
8 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
3 – 17 Apr
2 May
6-8 wk
29 May
13 Jun
8 wk after
16 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
27 Mar – 10 Apr
5 May
6-8 wk
22 May
16 Jun
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Mar – 1 Apr
19 May
4-8 wk
29 Apr
16 Jun
4 wk after
29 Apr
6 Jun
4 wk after
Foxglove
Digitalis purpurea
3 – 17 Jan
8-10 wk
14 Mar
3 wk before
16 Apr
2 wk after
Busy lizzie
Impatiens walleriana
17 Mar – 14 Apr
6 Jun
8-12 wk
9 Jun
1 Aug
10 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 Apr
12 May
6-8 wk
29 May
23 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
17 Apr – 1 May
19 Apr
4-6 wk
29 May
8 wk after
Chinese lantern
Physalis alkekengi
24 Feb – 10 Mar
26 Apr
8-10 wk
5 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
28 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
3 – 17 Apr
22 Apr
6-8 wk
29 May
3 Jun
8 wk after
16 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
10 Feb – 10 Mar
26 Apr
8-12 wk
5 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
6 Mar – 3 Apr
27 Mar
8-12 wk
29 May
8 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
6 Mar – 3 Apr
11 Apr
8-12 wk
29 May
6 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
3 – 17 Apr
25 Apr
6-8 wk
29 May
6 Jun
8 wk after
Corn poppy
Papaver rhoeas
28 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
31 Dec – 28 Jan
16 May
8-12 wk
25 Mar
11 Jul
1 wk before
8 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
31 Mar – 14 Apr
28 Apr
8-10 wk
9 Jun
23 Jun
10 wk after
Sweet pea
Lathyrus odoratus
17 Jan – 7 Feb
6 Jun
5-8 wk
14 Mar
11 Jul
3 wk before
Stock
Matthiola incana
28 Jan – 11 Feb
9 Jun
6-8 wk
25 Mar
21 Jul
1 wk before
16 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
17 – 31 Jan
10 May
6-8 wk
14 Mar
21 Jun
3 wk before
16 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
17 Apr – 1 May
4 May
4-6 wk
29 May
1 Jun
8 wk after
Garden pansy
Viola × wittrockiana
24 Dec – 7 Jan
26 May
8-10 wk
4 Mar
21 Jul
4 wk before
8 Apr
11 Jul
1 wk after
Petunia
Petunia
6 Mar – 3 Apr
18 Apr
8-12 wk
29 May
13 Jun
8 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Mar
10 May
6-8 wk
5 May
21 Jun
5 wk after
14 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
19 May
4-6 wk
29 May
16 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
24 Apr – 8 May
26 May
3-5 wk
29 May
16 Jun
8 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
19 May
4-6 wk
29 May
16 Jun
8 wk after
14 May
6 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
24 Mar – 21 Apr
23 Apr
8-12 wk
16 Jun
18 Jun
11 wk after
Bee balm
Monarda didyma
9 Jan – 6 Feb
26 Apr
8-12 wk
3 Apr
21 Jun
Vid frost
29 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
17 – 31 Jan
10 Apr
6-8 wk
14 Mar
22 May
3 wk before
16 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
14 Mar
21 Jun
3 wk before
28 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
7 – 21 Jan
30 May
6-8 wk
4 Mar
11 Jul
4 wk before
21 Mar
1 Jul
2 wk before
Bishop's flower
Ammi majus
7 – 21 Mar
13 Jun
4-6 wk
18 Apr
11 Jul
2 wk after
16 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
6 – 20 Mar
18 Mar
10-12 wk
29 May
8 wk after
Sunflower
Helianthus annuus
1 – 8 May
20 Jun
3-4 wk
29 May
11 Jul
8 wk after
29 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
3 – 17 Apr
9 Jun
6-8 wk
29 May
21 Jul
8 wk after
14 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
19 Mar – 2 Apr
12 May
6-8 wk
14 May
23 Jun
6 wk after
14 May
13 Jun
6 wk after
Hollyhock
Alcea rosea
17 – 31 Jan
6-8 wk
14 Mar
3 wk before
16 Apr
2 wk after
Alpine delphinium
Delphinium elatum
29 Jan – 26 Feb
26 Apr
8-12 wk
23 Apr
21 Jun
3 wk after
29 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
3 – 17 Apr
12 May
6-8 wk
29 May
23 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Mar
30 May
6-8 wk
5 May
11 Jul
5 wk after
14 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
1 – 15 Feb
16 Apr
8-10 wk
12 Apr
11 Jun
1 wk after
29 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
20 Mar – 17 Apr
5 May
6-10 wk
29 May
16 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
28 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
16 May
8-10 wk
29 May
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
17 – 31 Jan
10 May
6-8 wk
14 Mar
21 Jun
3 wk before
16 Apr
11 Jun
2 wk after