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Rel. frost
Last spring frost (0°C) 5 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 186 days 5 Apr – 8 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 – 30 Mar
18 Jun
5-7 wk
4 May
23 Jul
4 wk after
29 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Mar
30 Jun
4-6 wk
19 Apr
28 Jul
2 wk after
29 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
15 Feb – 15 Mar
15 Mar
8-12 wk
10 May
10 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Jan – 4 Feb
13 Jun
5-7 wk
11 Mar
18 Jul
4 wk before
24 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
24 Apr – 1 May
9 May
3-4 wk
22 May
30 May
7 wk after
Florence Fennel
Foeniculum vulgare
25 Apr – 2 May
7 Jun
4-5 wk
30 May
5 Jul
8 wk after
11 May
25 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 May
3-4 wk
1 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Jan – 8 Feb
3 Apr
8-12 wk
5 Apr
29 May
Vid frost
15 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Mar
18 Jun
1 wk before
29 Mar
8 Jun
1 wk before
Maize
Zea mays
Fleece
12 – 19 Apr
29 Apr
3-4 wk
10 May
20 May
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
6 – 13 Apr
7 Jul
3-4 wk
4 May
28 Jul
4 wk after
15 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Jan – 4 Feb
13 Jun
5-7 wk
11 Mar
18 Jul
4 wk before
24 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
27 Feb – 13 Mar
7 Jun
4-6 wk
10 Apr
5 Jul
1 wk after
10 Apr
25 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Jan – 4 Feb
23 Jun
5-7 wk
11 Mar
28 Jul
4 wk before
29 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
2 – 9 May
14 May
3-4 wk
30 May
4 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
6 – 13 Apr
16 Jun
3-4 wk
4 May
7 Jul
4 wk after
15 Apr
27 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Mar
25 Jun
4-6 wk
19 Apr
23 Jul
2 wk after
Lettuce
Lactuca sativa
1 – 8 Mar
12 Jul
3-4 wk
29 Mar
2 Aug
1 wk before
29 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 Feb – 1 Mar
25 Jun
4-6 wk
29 Mar
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
4 Jun
2-4 wk
24 Mar
18 Jun
2 wk before
24 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Mar
18 Jun
1 wk before
29 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
21 – 28 Feb
27 Jul
3-4 wk
21 Mar
17 Aug
2 wk before
18 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 May
4-6 wk
13 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
15 – 29 Mar
8 Apr
6-8 wk
10 May
20 May
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
24 Apr – 8 May
16 May
2-4 wk
22 May
30 May
7 wk after
11 May
20 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Mar
25 Jun
4-6 wk
19 Apr
23 Jul
2 wk after
Garden pea
Pisum sativum
21 – 28 Feb
27 Jun
3-4 wk
21 Mar
18 Jul
2 wk before
29 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
10 – 24 Apr
13 May
4-6 wk
22 May
10 Jun
7 wk after
Lemon balm
Melissa officinalis
25 Jan – 8 Feb
23 May
8-10 wk
5 Apr
18 Jul
Vid frost
26 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
29 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
14 – 28 Jan
6 Jun
6-8 wk
11 Mar
18 Jul
4 wk before
29 Mar
8 Jul
1 wk before
Spearmint
Mentha spicata
27 Dec – 24 Jan
23 May
8-12 wk
21 Mar
18 Jul
2 wk before
26 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
15 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
23 Feb – 9 Mar
8 May
8-10 wk
4 May
3 Jul
4 wk after
Common thyme
Thymus vulgaris
8 – 22 Feb
13 May
8-10 wk
19 Apr
8 Jul
2 wk after
Oregano
Origanum vulgare
14 – 28 Feb
27 May
6-8 wk
11 Apr
8 Jul
1 wk after
26 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
24 Jan – 7 Feb
27 May
6-8 wk
21 Mar
8 Jul
2 wk before
29 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
26 Jan – 23 Feb
9 Apr
10-14 wk
4 May
18 Jun
4 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
24 Apr – 1 May
20 May
3-4 wk
22 May
10 Jun
7 wk after
Cornflower
Centaurea cyanus
21 Mar
18 Jul
2 wk before
29 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Mar
5 Apr
8-10 wk
22 May
31 May
7 wk after
Sweet William
Dianthus barbatus
24 Jan – 7 Feb
6-8 wk
21 Mar
2 wk before
10 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Mar – 10 Apr
19 Apr
6-8 wk
22 May
31 May
7 wk after
13 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
21 Mar – 4 Apr
26 Apr
6-8 wk
16 May
7 Jun
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 – 29 Mar
10 May
4-8 wk
26 Apr
7 Jun
3 wk after
26 Apr
28 May
3 wk after
Foxglove
Digitalis purpurea
10 – 24 Jan
8-10 wk
21 Mar
2 wk before
15 Apr
1 wk after
Busy lizzie
Impatiens walleriana
7 Mar – 4 Apr
31 May
8-12 wk
30 May
26 Jul
8 wk after
Creeping zinnia
Sanvitalia procumbens
27 Mar – 10 Apr
29 Apr
6-8 wk
22 May
10 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
10 – 24 Apr
13 Apr
4-6 wk
22 May
7 wk after
Chinese lantern
Physalis alkekengi
23 Feb – 9 Mar
23 Apr
8-10 wk
4 May
18 Jun
4 wk after
Love in a mist
Nigella damascena
29 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
27 Mar – 10 Apr
9 Apr
6-8 wk
22 May
7 wk after
13 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
9 Feb – 9 Mar
23 Apr
8-12 wk
4 May
18 Jun
4 wk after
Cardoon
Cynara cardunculus
27 Feb – 27 Mar
24 Mar
8-12 wk
22 May
7 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
27 Feb – 27 Mar
5 Apr
8-12 wk
22 May
31 May
7 wk after
Globe amaranth
Gomphrena globosa
Fleece
27 Mar – 10 Apr
19 Apr
6-8 wk
22 May
31 May
7 wk after
Corn poppy
Papaver rhoeas
29 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
4 Jan – 1 Feb
13 May
8-12 wk
29 Mar
8 Jul
1 wk before
10 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
21 Mar – 4 Apr
15 Apr
8-10 wk
30 May
10 Jun
8 wk after
Sweet pea
Lathyrus odoratus
24 Jan – 14 Feb
3 Jun
5-8 wk
21 Mar
8 Jul
2 wk before
Stock
Matthiola incana
1 – 15 Feb
6 Jun
6-8 wk
29 Mar
18 Jul
1 wk before
15 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
24 Jan – 7 Feb
7 May
6-8 wk
21 Mar
18 Jun
2 wk before
15 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
10 – 24 Apr
28 Apr
4-6 wk
22 May
26 May
7 wk after
Garden pansy
Viola × wittrockiana
31 Dec – 14 Jan
23 May
8-10 wk
11 Mar
18 Jul
4 wk before
10 Apr
8 Jul
1 wk after
Petunia
Petunia
27 Feb – 27 Mar
5 Apr
8-12 wk
22 May
31 May
7 wk after
Sweet Scabious
Scabiosa atropurpurea
9 – 23 Mar
7 May
6-8 wk
4 May
18 Jun
4 wk after
11 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
10 – 24 Apr
13 May
4-6 wk
22 May
10 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
17 Apr – 1 May
20 May
3-5 wk
22 May
10 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
10 – 24 Apr
10 May
4-6 wk
22 May
7 Jun
7 wk after
11 May
28 May
5 wk after
Scarlet milkweed
Asclepias curassavica
11 Mar – 8 Apr
14 Apr
8-12 wk
3 Jun
9 Jun
8 wk after
Bee balm
Monarda didyma
11 Jan – 8 Feb
23 Apr
8-12 wk
5 Apr
18 Jun
Vid frost
26 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
24 Jan – 7 Feb
7 Apr
6-8 wk
21 Mar
19 May
2 wk before
15 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
21 Mar
18 Jun
2 wk before
29 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
14 – 28 Jan
27 May
6-8 wk
11 Mar
8 Jul
4 wk before
24 Mar
28 Jun
2 wk before
Bishop's flower
Ammi majus
4 – 18 Mar
10 Jun
4-6 wk
15 Apr
8 Jul
1 wk after
15 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
27 Feb – 13 Mar
9 Mar
10-12 wk
22 May
7 wk after
Sunflower
Helianthus annuus
24 Apr – 1 May
17 Jun
3-4 wk
22 May
8 Jul
7 wk after
26 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
27 Mar – 10 Apr
6 Jun
6-8 wk
22 May
18 Jul
7 wk after
11 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
15 – 29 Mar
29 Apr
6-8 wk
10 May
10 Jun
5 wk after
11 May
31 May
5 wk after
Hollyhock
Alcea rosea
24 Jan – 7 Feb
6-8 wk
21 Mar
2 wk before
15 Apr
1 wk after
Alpine delphinium
Delphinium elatum
25 Jan – 22 Feb
23 Apr
8-12 wk
19 Apr
18 Jun
2 wk after
26 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
27 Mar – 10 Apr
29 Apr
6-8 wk
22 May
10 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
9 – 23 Mar
27 May
6-8 wk
4 May
8 Jul
4 wk after
11 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
31 Jan – 14 Feb
13 Apr
8-10 wk
11 Apr
8 Jun
1 wk after
26 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
13 Mar – 10 Apr
29 Apr
6-10 wk
22 May
10 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
29 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Mar
10 May
8-10 wk
22 May
5 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
24 Jan – 7 Feb
7 May
6-8 wk
21 Mar
18 Jun
2 wk before
15 Apr
8 Jun
1 wk after