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Rel. frost
Last spring frost (0°C) 9 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 187 days 9 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)
23 Mar – 6 Apr
22 Jun
5-7 wk
11 May
27 Jul
5 wk after
3 Apr
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Mar – 1 Apr
4 Jul
4-6 wk
29 Apr
1 Aug
3 wk after
3 Apr
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Jan – 3 Feb
17 Jun
5-7 wk
10 Mar
22 Jul
4 wk before
27 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
22 – 29 Apr
27 May
3-4 wk
20 May
17 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 May
14 Jun
4-5 wk
15 Jun
12 Jul
10 wk after
20 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Jan – 12 Feb
7 Apr
8-12 wk
9 Apr
2 Jun
Vid frost
22 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
3 Apr
22 Jun
1 wk before
3 Apr
12 Jun
1 wk before
Maize
Zea mays
Greenhouse
7 – 14 Apr
17 May
3-4 wk
5 May
7 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
11 Jul
3-4 wk
11 May
1 Aug
5 wk after
22 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Jan – 3 Feb
17 Jun
5-7 wk
10 Mar
22 Jul
4 wk before
27 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Mar
9 Jun
4-6 wk
14 Apr
7 Jul
1 wk after
14 Apr
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Jan – 3 Feb
27 Jun
5-7 wk
10 Mar
1 Aug
4 wk before
3 Apr
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
7 – 14 May
1 Jun
3-4 wk
4 Jun
22 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
25 Jun
3-4 wk
11 May
16 Jul
5 wk after
22 Apr
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Mar – 1 Apr
29 Jun
4-6 wk
29 Apr
27 Jul
3 wk after
Lettuce
Lactuca sativa
3 – 10 Mar
16 Jul
3-4 wk
31 Mar
6 Aug
1 wk before
3 Apr
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Feb – 3 Mar
29 Jun
4-6 wk
31 Mar
27 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Feb – 13 Mar
8 Jun
2-4 wk
27 Mar
22 Jun
2 wk before
27 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
3 Apr
22 Jun
1 wk before
3 Apr
12 Jun
1 wk before
Spinach
Spinacia oleracea
20 – 27 Feb
31 Jul
3-4 wk
20 Mar
21 Aug
3 wk before
20 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 May
4-6 wk
22 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
10 – 24 Mar
26 Apr
6-8 wk
5 May
7 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
22 Apr – 6 May
3 Jun
2-4 wk
20 May
17 Jun
6 wk after
5 May
7 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Mar – 1 Apr
29 Jun
4-6 wk
29 Apr
27 Jul
3 wk after
Garden pea
Pisum sativum
20 – 27 Feb
1 Jul
3-4 wk
20 Mar
22 Jul
3 wk before
3 Apr
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
23 Apr – 7 May
10 May
4-6 wk
4 Jun
7 Jun
8 wk after
Lemon balm
Melissa officinalis
29 Jan – 12 Feb
27 May
8-10 wk
9 Apr
22 Jul
Vid frost
5 May
12 Jul
4 wk after
Dill
Anethum graveolens
3 Apr
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
13 – 27 Jan
10 Jun
6-8 wk
10 Mar
22 Jul
4 wk before
3 Apr
12 Jul
1 wk before
Spearmint
Mentha spicata
26 Dec – 23 Jan
27 May
8-12 wk
20 Mar
22 Jul
3 wk before
5 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
22 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
12 May
8-10 wk
11 May
7 Jul
5 wk after
Common thyme
Thymus vulgaris
18 Feb – 4 Mar
17 May
8-10 wk
29 Apr
12 Jul
3 wk after
Oregano
Origanum vulgare
21 Feb – 7 Mar
31 May
6-8 wk
18 Apr
12 Jul
1 wk after
5 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
23 Jan – 6 Feb
31 May
6-8 wk
20 Mar
12 Jul
3 wk before
3 Apr
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
13 Apr
10-14 wk
11 May
22 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
7 – 14 May
17 May
3-4 wk
4 Jun
7 Jun
8 wk after
Cornflower
Centaurea cyanus
20 Mar
22 Jul
3 wk before
3 Apr
12 Jul
1 wk before
Statice
Limonium sinuatum
26 Mar – 9 Apr
17 Apr
8-10 wk
4 Jun
12 Jun
8 wk after
Sweet William
Dianthus barbatus
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
14 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
9 – 23 Apr
1 May
6-8 wk
4 Jun
12 Jun
8 wk after
22 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
10 Mar – 7 Apr
18 May
4-8 wk
5 May
15 Jun
4 wk after
5 May
5 Jun
4 wk after
Foxglove
Digitalis purpurea
9 – 23 Jan
8-10 wk
20 Mar
3 wk before
22 Apr
2 wk after
Busy lizzie
Impatiens walleriana
23 Mar – 20 Apr
28 May
8-12 wk
15 Jun
23 Jul
10 wk after
Creeping zinnia
Sanvitalia procumbens
9 – 23 Apr
11 May
6-8 wk
4 Jun
22 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
8 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
27 Apr
8-10 wk
11 May
22 Jun
5 wk after
Love in a mist
Nigella damascena
3 Apr
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
9 – 23 Apr
21 Apr
6-8 wk
4 Jun
8 wk after
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
27 Apr
8-12 wk
11 May
22 Jun
5 wk after
Cardoon
Cynara cardunculus
12 Mar – 9 Apr
28 Mar
8-12 wk
4 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
12 Mar – 9 Apr
2 Apr
8-12 wk
4 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
9 – 23 Apr
16 Apr
6-8 wk
4 Jun
8 wk after
Corn poppy
Papaver rhoeas
3 Apr
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
6 Jan – 3 Feb
17 May
8-12 wk
31 Mar
12 Jul
1 wk before
14 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
6 – 20 Apr
27 Apr
8-10 wk
15 Jun
22 Jun
10 wk after
Sweet pea
Lathyrus odoratus
23 Jan – 13 Feb
7 Jun
5-8 wk
20 Mar
12 Jul
3 wk before
Stock
Matthiola incana
3 – 17 Feb
10 Jun
6-8 wk
31 Mar
22 Jul
1 wk before
22 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
23 Jan – 6 Feb
11 May
6-8 wk
20 Mar
22 Jun
3 wk before
22 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
8 – 22 Apr
13 May
4-6 wk
20 May
10 Jun
6 wk after
Garden pansy
Viola × wittrockiana
30 Dec – 13 Jan
27 May
8-10 wk
10 Mar
22 Jul
4 wk before
14 Apr
12 Jul
1 wk after
Petunia
Petunia
12 Mar – 9 Apr
17 Apr
8-12 wk
4 Jun
12 Jun
8 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
11 May
6-8 wk
11 May
22 Jun
5 wk after
20 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
23 Apr – 7 May
10 May
4-6 wk
4 Jun
7 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
30 Apr – 14 May
17 May
3-5 wk
4 Jun
7 Jun
8 wk after
Garden cosmos
Cosmos bipinnatus
23 Apr – 7 May
18 May
4-6 wk
4 Jun
15 Jun
8 wk after
20 May
5 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
23 Mar – 20 Apr
2 May
8-12 wk
15 Jun
27 Jun
10 wk after
Bee balm
Monarda didyma
15 Jan – 12 Feb
27 Apr
8-12 wk
9 Apr
22 Jun
Vid frost
5 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
23 Jan – 6 Feb
11 Apr
6-8 wk
20 Mar
23 May
3 wk before
22 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
20 Mar
22 Jun
3 wk before
3 Apr
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
13 – 27 Jan
31 May
6-8 wk
10 Mar
12 Jul
4 wk before
27 Mar
2 Jul
2 wk before
Bishop's flower
Ammi majus
13 – 27 Mar
14 Jun
4-6 wk
24 Apr
12 Jul
2 wk after
22 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
12 – 26 Mar
17 Mar
10-12 wk
4 Jun
8 wk after
Sunflower
Helianthus annuus
7 – 14 May
21 Jun
3-4 wk
4 Jun
12 Jul
8 wk after
5 May
2 Jul
4 wk after
China aster
Callistephus chinensis
9 – 23 Apr
10 Jun
6-8 wk
4 Jun
22 Jul
8 wk after
20 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
11 May
6-8 wk
20 May
22 Jun
6 wk after
20 May
12 Jun
6 wk after
Hollyhock
Alcea rosea
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
22 Apr
2 wk after
Alpine delphinium
Delphinium elatum
4 Feb – 4 Mar
27 Apr
8-12 wk
29 Apr
22 Jun
3 wk after
5 May
12 Jun
4 wk after
African marigold
Tagetes erecta
9 – 23 Apr
11 May
6-8 wk
4 Jun
22 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
31 May
6-8 wk
11 May
12 Jul
5 wk after
20 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
7 – 21 Feb
17 Apr
8-10 wk
18 Apr
12 Jun
1 wk after
5 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
26 Mar – 23 Apr
26 Apr
6-10 wk
4 Jun
7 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
3 Apr
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
26 Mar – 9 Apr
17 May
8-10 wk
4 Jun
12 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
23 Jan – 6 Feb
11 May
6-8 wk
20 Mar
22 Jun
3 wk before
22 Apr
12 Jun
2 wk after