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Rel. frost
Last spring frost (0°C) 14 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 180 days 14 Apr – 11 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)
28 Mar – 11 Apr
21 Jun
5-7 wk
16 May
26 Jul
5 wk after
8 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
3 Jul
4-6 wk
4 May
31 Jul
3 wk after
8 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
8-12 wk
25 May
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Jan – 8 Feb
16 Jun
5-7 wk
15 Mar
21 Jul
4 wk before
1 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
27 Apr – 4 May
28 May
3-4 wk
25 May
18 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
11 Jun
4-5 wk
20 Jun
9 Jul
10 wk after
25 May
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Jan – 17 Feb
6 Apr
8-12 wk
14 Apr
1 Jun
Vid frost
27 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 Apr
21 Jun
1 wk before
8 Apr
11 Jun
1 wk before
Maize
Zea mays
Greenhouse
12 – 19 Apr
18 May
3-4 wk
10 May
8 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
10 Jul
3-4 wk
16 May
31 Jul
5 wk after
27 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Jan – 8 Feb
16 Jun
5-7 wk
15 Mar
21 Jul
4 wk before
1 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
8 – 22 Mar
9 Jun
4-6 wk
19 Apr
7 Jul
1 wk after
19 Apr
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Jan – 8 Feb
26 Jun
5-7 wk
15 Mar
31 Jul
4 wk before
8 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
2 Jun
3-4 wk
9 Jun
23 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
21 Jun
3-4 wk
16 May
12 Jul
5 wk after
27 Apr
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
28 Jun
4-6 wk
4 May
26 Jul
3 wk after
Lettuce
Lactuca sativa
8 – 15 Mar
15 Jul
3-4 wk
5 Apr
5 Aug
1 wk before
8 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Feb – 8 Mar
28 Jun
4-6 wk
5 Apr
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Mar
7 Jun
2-4 wk
1 Apr
21 Jun
2 wk before
1 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 Apr
21 Jun
1 wk before
8 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
25 Feb – 4 Mar
30 Jul
3-4 wk
25 Mar
20 Aug
3 wk before
25 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
15 – 29 Mar
27 Apr
6-8 wk
10 May
8 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
27 Apr – 11 May
4 Jun
2-4 wk
25 May
18 Jun
6 wk after
10 May
8 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
28 Jun
4-6 wk
4 May
26 Jul
3 wk after
Garden pea
Pisum sativum
25 Feb – 4 Mar
30 Jun
3-4 wk
25 Mar
21 Jul
3 wk before
8 Apr
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
28 Apr – 12 May
11 May
4-6 wk
9 Jun
8 wk after
Lemon balm
Melissa officinalis
3 – 17 Feb
26 May
8-10 wk
14 Apr
21 Jul
Vid frost
10 May
11 Jul
4 wk after
Dill
Anethum graveolens
8 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
18 Jan – 1 Feb
9 Jun
6-8 wk
15 Mar
21 Jul
4 wk before
8 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
31 Dec – 28 Jan
26 May
8-12 wk
25 Mar
21 Jul
3 wk before
10 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
27 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
11 May
8-10 wk
16 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
16 May
8-10 wk
4 May
11 Jul
3 wk after
Oregano
Origanum vulgare
26 Feb – 12 Mar
30 May
6-8 wk
23 Apr
11 Jul
1 wk after
10 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
28 Jan – 11 Feb
30 May
6-8 wk
25 Mar
11 Jul
3 wk before
8 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
12 Apr
10-14 wk
16 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
12 – 19 May
18 May
3-4 wk
9 Jun
8 wk after
Cornflower
Centaurea cyanus
25 Mar
21 Jul
3 wk before
8 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
31 Mar – 14 Apr
12 Apr
8-10 wk
9 Jun
8 wk after
Sweet William
Dianthus barbatus
28 Jan – 11 Feb
6-8 wk
25 Mar
3 wk before
19 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
14 – 28 Apr
26 Apr
6-8 wk
9 Jun
8 wk after
27 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
7 – 21 Apr
28 Apr
6-8 wk
2 Jun
9 Jun
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Mar – 12 Apr
12 May
4-8 wk
10 May
9 Jun
4 wk after
10 May
30 May
4 wk after
Foxglove
Digitalis purpurea
14 – 28 Jan
8-10 wk
25 Mar
3 wk before
27 Apr
2 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
29 May
8-12 wk
20 Jun
24 Jul
10 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
6 May
6-8 wk
9 Jun
17 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
8 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
26 Apr
8-10 wk
16 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
8 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
14 – 28 Apr
16 Apr
6-8 wk
9 Jun
8 wk after
27 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
26 Apr
8-12 wk
16 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
17 Mar – 14 Apr
27 Mar
8-12 wk
9 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
17 Mar – 14 Apr
3 Apr
8-12 wk
9 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
14 – 28 Apr
17 Apr
6-8 wk
9 Jun
8 wk after
Corn poppy
Papaver rhoeas
8 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Jan – 8 Feb
16 May
8-12 wk
5 Apr
11 Jul
1 wk before
19 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
11 – 25 Apr
22 Apr
8-10 wk
20 Jun
10 wk after
Sweet pea
Lathyrus odoratus
28 Jan – 18 Feb
6 Jun
5-8 wk
25 Mar
11 Jul
3 wk before
Stock
Matthiola incana
8 – 22 Feb
9 Jun
6-8 wk
5 Apr
21 Jul
1 wk before
27 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
28 Jan – 11 Feb
10 May
6-8 wk
25 Mar
21 Jun
3 wk before
27 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
13 – 27 Apr
7 May
4-6 wk
25 May
4 Jun
6 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Jan
26 May
8-10 wk
15 Mar
21 Jul
4 wk before
19 Apr
11 Jul
1 wk after
Petunia
Petunia
17 Mar – 14 Apr
12 Apr
8-12 wk
9 Jun
8 wk after
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
10 May
6-8 wk
16 May
21 Jun
5 wk after
25 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
28 Apr – 12 May
11 May
4-6 wk
9 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
18 May
3-5 wk
9 Jun
8 wk after
Garden cosmos
Cosmos bipinnatus
28 Apr – 12 May
12 May
4-6 wk
9 Jun
9 Jun
8 wk after
25 May
30 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
28 Mar – 25 Apr
3 May
8-12 wk
20 Jun
28 Jun
10 wk after
Bee balm
Monarda didyma
20 Jan – 17 Feb
26 Apr
8-12 wk
14 Apr
21 Jun
Vid frost
10 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
28 Jan – 11 Feb
10 Apr
6-8 wk
25 Mar
22 May
3 wk before
27 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
25 Mar
21 Jun
3 wk before
8 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
18 Jan – 1 Feb
30 May
6-8 wk
15 Mar
11 Jul
4 wk before
1 Apr
1 Jul
2 wk before
Bishop's flower
Ammi majus
18 Mar – 1 Apr
13 Jun
4-6 wk
29 Apr
11 Jul
2 wk after
27 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
28 Mar
10-12 wk
25 May
6 Jun
6 wk after
Sunflower
Helianthus annuus
12 – 19 May
20 Jun
3-4 wk
9 Jun
11 Jul
8 wk after
10 May
1 Jul
4 wk after
China aster
Callistephus chinensis
14 – 28 Apr
9 Jun
6-8 wk
9 Jun
21 Jul
8 wk after
25 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
6 May
6-8 wk
25 May
17 Jun
6 wk after
25 May
7 Jun
6 wk after
Hollyhock
Alcea rosea
28 Jan – 11 Feb
6-8 wk
25 Mar
3 wk before
27 Apr
2 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
26 Apr
8-12 wk
4 May
21 Jun
3 wk after
10 May
11 Jun
4 wk after
African marigold
Tagetes erecta
14 – 28 Apr
6 May
6-8 wk
9 Jun
17 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
30 May
6-8 wk
16 May
11 Jul
5 wk after
25 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
12 – 26 Feb
16 Apr
8-10 wk
23 Apr
11 Jun
1 wk after
10 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
31 Mar – 28 Apr
27 Apr
6-10 wk
9 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
8 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
14 May
8-10 wk
9 Jun
9 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
28 Jan – 11 Feb
10 May
6-8 wk
25 Mar
21 Jun
3 wk before
27 Apr
11 Jun
2 wk after