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