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Rel. frost
Last spring frost (0°C) 6 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 192 days 6 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)
16 Feb – 2 Mar
22 Jun
5-7 wk
6 Apr
27 Jul
0 wk
31 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Feb – 9 Mar
4 Jul
4-6 wk
6 Apr
1 Aug
0 wk
31 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
30 Jan – 27 Feb
1 Feb
8-12 wk
24 Apr
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 Feb – 2 Mar
17 Jun
5-7 wk
6 Apr
22 Jul
0 wk
24 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
27 Mar – 3 Apr
28 May
3-4 wk
24 Apr
18 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 Apr
11 Jun
4-5 wk
17 May
9 Jul
6 wk after
17 May
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
29 Apr – 6 May
3-4 wk
27 May
7 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Jan – 9 Feb
7 Apr
8-12 wk
6 Apr
2 Jun
0 wk
19 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 Mar
22 Jun
1 wk before
31 Mar
12 Jun
1 wk before
Maize
Zea mays
Greenhouse
9 – 16 Mar
18 May
3-4 wk
6 Apr
8 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Mar
11 Jul
3-4 wk
6 Apr
1 Aug
0 wk
19 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 Apr
12 Jul
0 wk
24 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 Feb – 2 Mar
17 Jun
5-7 wk
6 Apr
22 Jul
0 wk
24 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
28 Feb – 14 Mar
11 Jun
4-6 wk
11 Apr
9 Jul
1 wk after
11 Apr
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 Feb – 2 Mar
27 Jun
5-7 wk
6 Apr
1 Aug
0 wk
31 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
5 – 12 Apr
2 Jun
3-4 wk
3 May
23 Jun
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Mar
21 Jun
3-4 wk
6 Apr
12 Jul
0 wk
19 Apr
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Feb – 9 Mar
29 Jun
4-6 wk
6 Apr
27 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Mar
16 Jul
3-4 wk
6 Apr
6 Aug
0 wk
31 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Feb – 9 Mar
29 Jun
4-6 wk
6 Apr
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
8 Jun
2-4 wk
24 Mar
22 Jun
2 wk before
24 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 Mar
22 Jun
1 wk before
31 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
9 – 16 Mar
31 Jul
3-4 wk
6 Apr
21 Aug
0 wk
17 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 May
4-6 wk
19 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
9 – 23 Feb
27 Apr
6-8 wk
6 Apr
8 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
27 Mar – 10 Apr
4 Jun
2-4 wk
24 Apr
18 Jun
3 wk after
2 May
8 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Feb – 9 Mar
29 Jun
4-6 wk
6 Apr
27 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Mar
1 Jul
3-4 wk
6 Apr
22 Jul
0 wk
31 Mar
12 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
22 Mar – 5 Apr
11 May
4-6 wk
3 May
8 Jun
4 wk after
Lemon balm
Melissa officinalis
26 Jan – 9 Feb
27 May
8-10 wk
6 Apr
22 Jul
0 wk
2 May
12 Jul
4 wk after
Dill
Anethum graveolens
31 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
9 – 23 Feb
10 Jun
6-8 wk
6 Apr
22 Jul
0 wk
31 Mar
12 Jul
1 wk before
Spearmint
Mentha spicata
12 Jan – 9 Feb
27 May
8-12 wk
6 Apr
22 Jul
0 wk
2 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
6 Apr
21 Aug
0 wk
19 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
26 Jan – 9 Feb
12 May
8-10 wk
6 Apr
7 Jul
0 wk
Common thyme
Thymus vulgaris
26 Jan – 9 Feb
17 May
8-10 wk
6 Apr
12 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Feb
31 May
6-8 wk
6 Apr
12 Jul
0 wk
2 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
9 – 23 Feb
31 May
6-8 wk
6 Apr
12 Jul
0 wk
31 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
29 Dec – 26 Jan
13 Apr
10-14 wk
6 Apr
22 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
5 – 12 Apr
18 May
3-4 wk
3 May
8 Jun
4 wk after
Cornflower
Centaurea cyanus
6 Apr
22 Jul
0 wk
31 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
22 Feb – 8 Mar
12 Apr
8-10 wk
3 May
7 Jun
4 wk after
Sweet William
Dianthus barbatus
9 – 23 Feb
6-8 wk
6 Apr
0 wk
11 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Mar
26 Apr
6-8 wk
3 May
7 Jun
4 wk after
19 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Mar
2 May
6-8 wk
28 Apr
13 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 Mar – 4 Apr
16 May
4-8 wk
2 May
13 Jun
4 wk after
2 May
3 Jun
4 wk after
Foxglove
Digitalis purpurea
26 Jan – 9 Feb
8-10 wk
6 Apr
0 wk
19 Apr
2 wk after
Busy lizzie
Impatiens walleriana
22 Feb – 22 Mar
29 May
8-12 wk
17 May
24 Jul
6 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Mar – 5 Apr
11 Apr
4-6 wk
3 May
9 May
4 wk after
Chinese lantern
Physalis alkekengi
26 Jan – 9 Feb
27 Apr
8-10 wk
6 Apr
22 Jun
0 wk
Love in a mist
Nigella damascena
6 Apr
7 Jul
0 wk
31 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Mar
16 Apr
6-8 wk
3 May
28 May
4 wk after
19 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
12 Jan – 9 Feb
27 Apr
8-12 wk
6 Apr
22 Jun
0 wk
Cardoon
Cynara cardunculus
8 Feb – 8 Mar
28 Mar
8-12 wk
3 May
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
8 Feb – 8 Mar
3 Apr
8-12 wk
3 May
29 May
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Mar
17 Apr
6-8 wk
3 May
29 May
4 wk after
Corn poppy
Papaver rhoeas
6 Apr
22 Jul
0 wk
31 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Jan – 9 Feb
17 May
8-12 wk
6 Apr
12 Jul
0 wk
11 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
8 – 22 Mar
22 Apr
8-10 wk
17 May
17 Jun
6 wk after
Sweet pea
Lathyrus odoratus
9 Feb – 2 Mar
7 Jun
5-8 wk
6 Apr
12 Jul
0 wk
Stock
Matthiola incana
9 – 23 Feb
10 Jun
6-8 wk
6 Apr
22 Jul
0 wk
19 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Feb
11 May
6-8 wk
6 Apr
22 Jun
0 wk
19 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Mar – 5 Apr
26 Apr
4-6 wk
3 May
24 May
4 wk after
Garden pansy
Viola × wittrockiana
26 Jan – 9 Feb
27 May
8-10 wk
6 Apr
22 Jul
0 wk
11 Apr
12 Jul
1 wk after
Petunia
Petunia
8 Feb – 8 Mar
12 Apr
8-12 wk
3 May
7 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
9 – 23 Feb
11 May
6-8 wk
6 Apr
22 Jun
0 wk
17 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
22 Mar – 5 Apr
11 May
4-6 wk
3 May
8 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 Mar – 12 Apr
18 May
3-5 wk
3 May
8 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
22 Mar – 5 Apr
16 May
4-6 wk
3 May
13 Jun
4 wk after
17 May
3 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
22 Feb – 22 Mar
3 May
8-12 wk
17 May
28 Jun
6 wk after
Bee balm
Monarda didyma
12 Jan – 9 Feb
27 Apr
8-12 wk
6 Apr
22 Jun
0 wk
2 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Feb
11 Apr
6-8 wk
6 Apr
23 May
0 wk
19 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
6 Apr
22 Jun
0 wk
31 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Feb
31 May
6-8 wk
6 Apr
12 Jul
0 wk
19 Feb
2 Jul
7 wk before
Bishop's flower
Ammi majus
23 Feb – 9 Mar
14 Jun
4-6 wk
6 Apr
12 Jul
0 wk
19 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
8 – 22 Feb
15 Mar
10-12 wk
3 May
24 May
4 wk after
Sunflower
Helianthus annuus
5 – 12 Apr
21 Jun
3-4 wk
3 May
12 Jul
4 wk after
2 May
2 Jul
4 wk after
China aster
Callistephus chinensis
8 – 22 Mar
10 Jun
6-8 wk
3 May
22 Jul
4 wk after
17 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
27 Feb – 13 Mar
6 May
6-8 wk
24 Apr
17 Jun
3 wk after
17 May
7 Jun
6 wk after
Hollyhock
Alcea rosea
9 – 23 Feb
6-8 wk
6 Apr
0 wk
19 Apr
2 wk after
Alpine delphinium
Delphinium elatum
12 Jan – 9 Feb
27 Apr
8-12 wk
6 Apr
22 Jun
0 wk
2 May
12 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
9 – 23 Feb
31 May
6-8 wk
6 Apr
12 Jul
0 wk
17 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
26 Jan – 9 Feb
17 Apr
8-10 wk
6 Apr
12 Jun
0 wk
2 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
22 Feb – 22 Mar
27 Apr
6-10 wk
3 May
8 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
6 Apr
22 Jul
0 wk
31 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Feb – 8 Mar
14 May
8-10 wk
3 May
9 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Feb
11 May
6-8 wk
6 Apr
22 Jun
0 wk
19 Apr
12 Jun
2 wk after