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Rel. frost
Last spring frost (0°C) 22 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 223 days 22 Apr – 1 Dec
Probability that frost is over

75% = 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)
Season too short
4 – 18 Mar
15 Jun
5-7 wk
22 Apr
20 Jul
0 wk
10 Apr
10 Jul
2 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
11 – 25 Mar
27 Jun
4-6 wk
22 Apr
25 Jul
0 wk
10 Apr
15 Jul
2 wk before
Chili pepper
Capsicum annuum
Fleece
19 Feb – 19 Mar
21 Apr
8-12 wk
14 May
16 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
4 – 18 Mar
10 Jun
5-7 wk
22 Apr
15 Jul
0 wk
4 Apr
5 Jul
3 wk before
Garden cucumber
Cucumis sativus
7 – 14 May
15 Jun
3-4 wk
4 Jun
6 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
30 Apr – 7 May
7 Jun
4-5 wk
4 Jun
5 Jul
6 wk after
10 Jun
25 Jun
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
16 – 23 May
4 Jun
3-4 wk
13 Jun
25 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Jan – 25 Feb
31 Mar
8-12 wk
22 Apr
26 May
0 wk
13 May
16 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
15 Jun
1 wk after
26 Apr
5 Jun
1 wk after
Maize
Zea mays
16 – 23 Apr
5 Jun
3-4 wk
14 May
26 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Mar – 5 Apr
4 Jul
3-4 wk
26 Apr
25 Jul
1 wk after
13 May
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 Apr
5 Jul
0 wk
22 Apr
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
4 – 18 Mar
10 Jun
5-7 wk
22 Apr
15 Jul
0 wk
4 Apr
5 Jul
3 wk before
Potato
Solanum tuberosum
27 Mar – 10 Apr
7 Jun
4-6 wk
8 May
5 Jul
2 wk after
8 May
25 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Mar
20 Jun
5-7 wk
22 Apr
25 Jul
0 wk
26 Apr
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
7 – 14 May
8 Jul
3-4 wk
4 Jun
29 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Mar – 5 Apr
13 Jun
3-4 wk
26 Apr
4 Jul
1 wk after
13 May
24 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
11 – 25 Mar
22 Jun
4-6 wk
22 Apr
20 Jul
0 wk
Lettuce
Lactuca sativa
25 Mar – 1 Apr
9 Jul
3-4 wk
22 Apr
30 Jul
0 wk
26 Apr
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
11 – 25 Mar
22 Jun
4-6 wk
22 Apr
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Mar – 8 Apr
1 Jun
2-4 wk
22 Apr
15 Jun
0 wk
22 Apr
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Apr
15 Jun
1 wk after
26 Apr
5 Jun
1 wk after
Spinach
Spinacia oleracea
25 Mar – 1 Apr
24 Jul
3-4 wk
22 Apr
14 Aug
0 wk
18 Apr
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
24 May – 7 Jun
4-6 wk
5 Jul
11 wk after
Garden tomato
Solanum lycopersicum
19 Mar – 2 Apr
15 May
6-8 wk
14 May
26 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
16 – 30 Apr
10 Jul
2-4 wk
14 May
24 Jul
3 wk after
10 Jun
14 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
11 – 25 Mar
22 Jun
4-6 wk
22 Apr
20 Jul
0 wk
Garden pea
Pisum sativum
25 Mar – 1 Apr
24 Jun
3-4 wk
22 Apr
15 Jul
0 wk
26 Apr
5 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
23 Apr – 7 May
16 Jun
4-6 wk
4 Jun
14 Jul
6 wk after
Lemon balm
Melissa officinalis
11 – 25 Feb
20 May
8-10 wk
22 Apr
15 Jul
0 wk
27 May
5 Jul
5 wk after
Dill
Anethum graveolens
26 Apr
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
Season too short
25 Feb – 11 Mar
3 Jun
6-8 wk
22 Apr
15 Jul
0 wk
10 Apr
5 Jul
2 wk before
Spearmint
Mentha spicata
Season too short
28 Jan – 25 Feb
20 May
8-12 wk
22 Apr
15 Jul
0 wk
2 May
5 Jul
1 wk after
Coriander
Coriandrum sativum
22 Apr
14 Aug
0 wk
13 May
4 Aug
3 wk after
Garden sage
Salvia officinalis
Season too short
11 – 25 Feb
5 May
8-10 wk
22 Apr
30 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
11 – 25 Feb
10 May
8-10 wk
22 Apr
5 Jul
0 wk
Oregano
Origanum vulgare
Season too short
25 Feb – 11 Mar
24 May
6-8 wk
22 Apr
5 Jul
0 wk
2 May
25 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
25 Feb – 11 Mar
24 May
6-8 wk
22 Apr
5 Jul
0 wk
10 Apr
25 Jun
2 wk before
Rosemary
Salvia rosmarinus
18 Jan – 15 Feb
6 Apr
10-14 wk
26 Apr
15 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
7 – 14 May
23 Jun
3-4 wk
4 Jun
14 Jul
6 wk after
Cornflower
Centaurea cyanus
Season too short
22 Apr
15 Jul
0 wk
10 Apr
5 Jul
2 wk before
Statice
Limonium sinuatum
5 – 19 Mar
10 May
8-10 wk
14 May
5 Jul
3 wk after
Sweet William
Dianthus barbatus
25 Feb – 11 Mar
6-8 wk
22 Apr
0 wk
8 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
19 Mar – 2 Apr
24 May
6-8 wk
14 May
5 Jul
3 wk after
5 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
17 – 31 Mar
24 May
6-8 wk
12 May
5 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 – 29 Apr
7 Jun
4-8 wk
27 May
5 Jul
5 wk after
27 May
25 Jun
5 wk after
Foxglove
Digitalis purpurea
11 – 25 Feb
8-10 wk
22 Apr
0 wk
13 May
3 wk after
Busy lizzie
Impatiens walleriana
12 Mar – 9 Apr
5 Jul
8-12 wk
4 Jun
30 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
19 Mar – 2 Apr
3 Jun
6-8 wk
14 May
15 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
23 Apr – 7 May
17 May
4-6 wk
4 Jun
14 Jun
6 wk after
Chinese lantern
Physalis alkekengi
15 Feb – 1 Mar
20 Apr
8-10 wk
26 Apr
15 Jun
1 wk after
Love in a mist
Nigella damascena
22 Apr
30 Jun
0 wk
26 Apr
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
19 Mar – 2 Apr
14 May
6-8 wk
14 May
25 Jun
3 wk after
5 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
1 Feb – 1 Mar
20 Apr
8-12 wk
26 Apr
15 Jun
1 wk after
Cardoon
Cynara cardunculus
19 Feb – 19 Mar
21 Mar
8-12 wk
14 May
16 May
3 wk after
Regal-foxtail
Ptilotus nobilis
12 Mar – 9 Apr
9 May
8-12 wk
4 Jun
4 Jul
6 wk after
Globe amaranth
Gomphrena globosa
9 – 23 Apr
23 May
6-8 wk
4 Jun
4 Jul
6 wk after
Corn poppy
Papaver rhoeas
22 Apr
15 Jul
0 wk
26 Apr
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
28 Jan – 25 Feb
10 May
8-12 wk
22 Apr
5 Jul
0 wk
8 May
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
26 Mar – 9 Apr
20 May
8-10 wk
4 Jun
15 Jul
6 wk after
Sweet pea
Lathyrus odoratus
Season too short
25 Feb – 18 Mar
31 May
5-8 wk
22 Apr
5 Jul
0 wk
Stock
Matthiola incana
25 Feb – 11 Mar
3 Jun
6-8 wk
22 Apr
15 Jul
0 wk
13 May
5 Jul
3 wk after
Wormwood
Artemisia absinthium
Season too short
25 Feb – 11 Mar
4 May
6-8 wk
22 Apr
15 Jun
0 wk
22 Apr
5 Jun
0 wk
Mexican sunflower
Tithonia rotundifolia
23 Apr – 7 May
1 Jun
4-6 wk
4 Jun
29 Jun
6 wk after
Garden pansy
Viola × wittrockiana
Season too short
11 – 25 Feb
20 May
8-10 wk
22 Apr
15 Jul
0 wk
18 Apr
5 Jul
1 wk before
Petunia
Petunia
19 Feb – 19 Mar
10 May
8-12 wk
14 May
5 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Mar
4 May
6-8 wk
26 Apr
15 Jun
1 wk after
10 Jun
7 wk after
Common zinnia
Zinnia elegans
2 – 16 Apr
17 Jun
4-6 wk
14 May
15 Jul
3 wk after
Common morning glory
Ipomoea purpurea
30 Apr – 14 May
23 Jun
3-5 wk
4 Jun
14 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 Apr
7 Jun
4-6 wk
14 May
5 Jul
3 wk after
10 Jun
25 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
28 Mar – 25 Apr
8 Jun
8-12 wk
20 Jun
3 Aug
8 wk after
Bee balm
Monarda didyma
28 Jan – 25 Feb
20 Apr
8-12 wk
22 Apr
15 Jun
0 wk
27 May
5 Jun
5 wk after
Yarrow
Achillea millefolium
Season too short
25 Feb – 11 Mar
4 Apr
6-8 wk
22 Apr
16 May
0 wk
22 Apr
6 May
0 wk
Safflower
Carthamus tinctorius
22 Apr
15 Jun
0 wk
26 Apr
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
25 Feb – 11 Mar
24 May
6-8 wk
22 Apr
5 Jul
0 wk
4 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
11 – 25 Mar
7 Jun
4-6 wk
22 Apr
5 Jul
0 wk
13 May
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
12 – 26 Mar
6 Apr
10-12 wk
4 Jun
15 Jun
6 wk after
Sunflower
Helianthus annuus
16 – 23 Apr
14 Jun
3-4 wk
14 May
5 Jul
3 wk after
27 May
25 Jun
5 wk after
China aster
Callistephus chinensis
19 Mar – 2 Apr
3 Jun
6-8 wk
14 May
15 Jul
3 wk after
10 Jun
5 Jul
7 wk after
Annual phlox
Phlox drummondii
15 – 29 Mar
3 Jun
6-8 wk
10 May
15 Jul
3 wk after
10 Jun
5 Jul
7 wk after
Hollyhock
Alcea rosea
25 Feb – 11 Mar
6-8 wk
22 Apr
0 wk
13 May
3 wk after
Alpine delphinium
Delphinium elatum
28 Jan – 25 Feb
20 Apr
8-12 wk
22 Apr
15 Jun
0 wk
27 May
5 Jun
5 wk after
African marigold
Tagetes erecta
19 Mar – 2 Apr
3 Jun
6-8 wk
14 May
15 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Mar
24 May
6-8 wk
26 Apr
5 Jul
1 wk after
10 Jun
25 Jun
7 wk after
Wood sage
Salvia nemorosa
11 – 25 Feb
10 Apr
8-10 wk
22 Apr
5 Jun
0 wk
27 May
5 wk after
Black-eyed susan vine
Thunbergia alata
26 Mar – 23 Apr
2 Jun
6-10 wk
4 Jun
14 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
22 Apr
15 Jul
0 wk
26 Apr
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
5 – 19 Mar
10 May
8-10 wk
14 May
5 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
25 Feb – 11 Mar
4 May
6-8 wk
22 Apr
15 Jun
0 wk
22 Apr
5 Jun
0 wk