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Rel. frost
Last spring frost (0°C) 28 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 201 days 28 Mar – 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)
7 – 21 Feb
19 Jun
5-7 wk
28 Mar
24 Jul
0 wk
22 Mar
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Feb
1 Jul
4-6 wk
28 Mar
29 Jul
0 wk
22 Mar
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
21 Jan – 18 Feb
11 Apr
8-12 wk
15 Apr
6 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Feb
14 Jun
5-7 wk
28 Mar
19 Jul
0 wk
15 Mar
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
27 Mar – 3 Apr
5 Jun
3-4 wk
24 Apr
26 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 Apr
11 Jun
4-5 wk
8 May
9 Jul
6 wk after
8 May
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
20 – 27 Apr
14 May
3-4 wk
18 May
4 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
3 – 31 Jan
4 Apr
8-12 wk
28 Mar
30 May
0 wk
10 Apr
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Mar
19 Jun
1 wk before
22 Mar
9 Jun
1 wk before
Maize
Zea mays
Fleece
18 – 25 Mar
26 May
3-4 wk
15 Apr
16 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Feb – 7 Mar
8 Jul
3-4 wk
28 Mar
29 Jul
0 wk
10 Apr
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Mar
9 Jul
0 wk
15 Mar
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Feb
14 Jun
5-7 wk
28 Mar
19 Jul
0 wk
15 Mar
9 Jul
2 wk before
Potato
Solanum tuberosum
19 Feb – 5 Mar
8 Jun
4-6 wk
2 Apr
6 Jul
1 wk after
2 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Feb
24 Jun
5-7 wk
28 Mar
29 Jul
0 wk
22 Mar
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
10 – 17 Apr
10 Jun
3-4 wk
8 May
1 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Feb – 7 Mar
20 Jun
3-4 wk
28 Mar
11 Jul
0 wk
10 Apr
1 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Feb
26 Jun
4-6 wk
28 Mar
24 Jul
0 wk
Lettuce
Lactuca sativa
28 Feb – 7 Mar
13 Jul
3-4 wk
28 Mar
3 Aug
0 wk
22 Mar
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Feb
26 Jun
4-6 wk
28 Mar
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 Feb – 1 Mar
5 Jun
2-4 wk
15 Mar
19 Jun
2 wk before
15 Mar
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Mar
19 Jun
1 wk before
22 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
28 Feb – 7 Mar
28 Jul
3-4 wk
28 Mar
18 Aug
0 wk
8 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
29 Apr – 13 May
4-6 wk
10 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
18 Feb – 4 Mar
5 May
6-8 wk
15 Apr
16 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
27 Mar – 10 Apr
12 Jun
2-4 wk
24 Apr
26 Jun
4 wk after
8 May
16 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Feb
26 Jun
4-6 wk
28 Mar
24 Jul
0 wk
Garden pea
Pisum sativum
28 Feb – 7 Mar
28 Jun
3-4 wk
28 Mar
19 Jul
0 wk
22 Mar
9 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
27 Mar – 10 Apr
19 May
4-6 wk
8 May
16 Jun
6 wk after
Lemon balm
Melissa officinalis
17 – 31 Jan
24 May
8-10 wk
28 Mar
19 Jul
0 wk
23 Apr
9 Jul
4 wk after
Dill
Anethum graveolens
22 Mar
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
31 Jan – 14 Feb
7 Jun
6-8 wk
28 Mar
19 Jul
0 wk
22 Feb
9 Jul
5 wk before
Spearmint
Mentha spicata
3 – 31 Jan
24 May
8-12 wk
28 Mar
19 Jul
0 wk
23 Apr
9 Jul
4 wk after
Coriander
Coriandrum sativum
28 Mar
18 Aug
0 wk
10 Apr
8 Aug
2 wk after
Garden sage
Salvia officinalis
17 – 31 Jan
9 May
8-10 wk
28 Mar
4 Jul
0 wk
Common thyme
Thymus vulgaris
17 – 31 Jan
14 May
8-10 wk
28 Mar
9 Jul
0 wk
Oregano
Origanum vulgare
31 Jan – 14 Feb
28 May
6-8 wk
28 Mar
9 Jul
0 wk
23 Apr
29 Jun
4 wk after
Parsley
Petroselinum crispum
31 Jan – 14 Feb
28 May
6-8 wk
28 Mar
9 Jul
0 wk
22 Mar
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
20 Dec – 17 Jan
10 Apr
10-14 wk
28 Mar
19 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
10 – 17 Apr
26 May
3-4 wk
8 May
16 Jun
6 wk after
Cornflower
Centaurea cyanus
28 Mar
19 Jul
0 wk
22 Mar
9 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Feb
24 Apr
8-10 wk
24 Apr
19 Jun
4 wk after
Sweet William
Dianthus barbatus
31 Jan – 14 Feb
6-8 wk
28 Mar
0 wk
2 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Feb – 13 Mar
8 May
6-8 wk
24 Apr
19 Jun
4 wk after
10 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
22 Feb – 8 Mar
11 May
6-8 wk
19 Apr
22 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Feb – 26 Mar
25 May
4-8 wk
23 Apr
22 Jun
4 wk after
23 Apr
12 Jun
4 wk after
Foxglove
Digitalis purpurea
17 – 31 Jan
8-10 wk
28 Mar
0 wk
10 Apr
2 wk after
Busy lizzie
Impatiens walleriana
13 Feb – 13 Mar
14 Jun
8-12 wk
8 May
9 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
27 Feb – 13 Mar
18 May
6-8 wk
24 Apr
29 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
27 Mar – 10 Apr
19 Apr
4-6 wk
8 May
17 May
6 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Jan
24 Apr
8-10 wk
28 Mar
19 Jun
0 wk
Love in a mist
Nigella damascena
28 Mar
4 Jul
0 wk
22 Mar
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
27 Feb – 13 Mar
28 Apr
6-8 wk
24 Apr
9 Jun
4 wk after
10 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
3 – 31 Jan
24 Apr
8-12 wk
28 Mar
19 Jun
0 wk
Cardoon
Cynara cardunculus
30 Jan – 27 Feb
25 Mar
8-12 wk
24 Apr
20 May
4 wk after
Regal-foxtail
Ptilotus nobilis
13 Feb – 13 Mar
11 Apr
8-12 wk
8 May
6 Jun
6 wk after
Globe amaranth
Gomphrena globosa
13 – 27 Mar
25 Apr
6-8 wk
8 May
6 Jun
6 wk after
Corn poppy
Papaver rhoeas
28 Mar
19 Jul
0 wk
22 Mar
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
3 – 31 Jan
14 May
8-12 wk
28 Mar
9 Jul
0 wk
2 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
27 Feb – 13 Mar
4 May
8-10 wk
8 May
29 Jun
6 wk after
Sweet pea
Lathyrus odoratus
31 Jan – 21 Feb
4 Jun
5-8 wk
28 Mar
9 Jul
0 wk
Stock
Matthiola incana
31 Jan – 14 Feb
7 Jun
6-8 wk
28 Mar
19 Jul
0 wk
10 Apr
9 Jul
2 wk after
Wormwood
Artemisia absinthium
31 Jan – 14 Feb
8 May
6-8 wk
28 Mar
19 Jun
0 wk
10 Apr
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
27 Mar – 10 Apr
4 May
4-6 wk
8 May
1 Jun
6 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Jan
24 May
8-10 wk
28 Mar
19 Jul
0 wk
2 Apr
9 Jul
1 wk after
Petunia
Petunia
30 Jan – 27 Feb
24 Apr
8-12 wk
24 Apr
19 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
31 Jan – 14 Feb
8 May
6-8 wk
28 Mar
19 Jun
0 wk
8 May
9 Jun
6 wk after
Common zinnia
Zinnia elegans
13 – 27 Mar
27 May
4-6 wk
24 Apr
24 Jun
4 wk after
Common morning glory
Ipomoea purpurea
3 – 17 Apr
26 May
3-5 wk
8 May
16 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
13 – 27 Mar
25 May
4-6 wk
24 Apr
22 Jun
4 wk after
8 May
12 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
3 – 31 Mar
11 May
8-12 wk
26 May
6 Jul
8 wk after
Bee balm
Monarda didyma
3 – 31 Jan
24 Apr
8-12 wk
28 Mar
19 Jun
0 wk
23 Apr
9 Jun
4 wk after
Yarrow
Achillea millefolium
31 Jan – 14 Feb
8 Apr
6-8 wk
28 Mar
20 May
0 wk
10 Apr
10 May
2 wk after
Safflower
Carthamus tinctorius
28 Mar
19 Jun
0 wk
22 Mar
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
31 Jan – 14 Feb
28 May
6-8 wk
28 Mar
9 Jul
0 wk
10 Feb
29 Jun
7 wk before
Bishop's flower
Ammi majus
14 – 28 Feb
11 Jun
4-6 wk
28 Mar
9 Jul
0 wk
10 Apr
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
13 – 27 Feb
16 Mar
10-12 wk
8 May
25 May
6 wk after
Sunflower
Helianthus annuus
27 Mar – 3 Apr
18 Jun
3-4 wk
24 Apr
9 Jul
4 wk after
23 Apr
29 Jun
4 wk after
China aster
Callistephus chinensis
27 Feb – 13 Mar
7 Jun
6-8 wk
24 Apr
19 Jul
4 wk after
8 May
9 Jul
6 wk after
Annual phlox
Phlox drummondii
18 Feb – 4 Mar
18 May
6-8 wk
15 Apr
29 Jun
3 wk after
8 May
19 Jun
6 wk after
Hollyhock
Alcea rosea
31 Jan – 14 Feb
6-8 wk
28 Mar
0 wk
10 Apr
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Jan
24 Apr
8-12 wk
28 Mar
19 Jun
0 wk
23 Apr
9 Jun
4 wk after
African marigold
Tagetes erecta
27 Feb – 13 Mar
18 May
6-8 wk
24 Apr
29 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
31 Jan – 14 Feb
28 May
6-8 wk
28 Mar
9 Jul
0 wk
8 May
29 Jun
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Jan
14 Apr
8-10 wk
28 Mar
9 Jun
0 wk
23 Apr
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
27 Feb – 27 Mar
5 May
6-10 wk
8 May
16 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
28 Mar
19 Jul
0 wk
22 Mar
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Feb
14 May
8-10 wk
24 Apr
9 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
31 Jan – 14 Feb
8 May
6-8 wk
28 Mar
19 Jun
0 wk
15 Mar
9 Jun
2 wk before