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