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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 1 of 10 years · 20 years of data
Frost-free season 152 days 19 May – 18 Oct
Probability that frost is over

90% = 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)
31 Mar – 14 Apr
12 Jun
5-7 wk
19 May
17 Jul
0 wk
20 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
24 Jun
4-6 wk
19 May
22 Jul
0 wk
20 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
7 Mar – 4 Apr
27 Mar
8-12 wk
30 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
7 Jun
5-7 wk
19 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
11 – 18 May
21 May
3-4 wk
8 Jun
11 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
4 Jun
4-5 wk
22 Jun
2 Jul
5 wk after
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
24 Feb – 24 Mar
28 Mar
8-12 wk
19 May
23 May
0 wk
1 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 May
12 Jun
0 wk
20 May
2 Jun
0 wk
Maize
Zea mays
Fleece
2 – 9 May
11 May
3-4 wk
30 May
1 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
1 Jul
3-4 wk
25 May
22 Jul
1 wk after
1 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
2 Jul
0 wk
19 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
7 Jun
5-7 wk
19 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
1 Jun
4-6 wk
29 May
29 Jun
1 wk after
29 May
19 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
17 Jun
5-7 wk
19 May
22 Jul
0 wk
20 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
25 May – 1 Jun
26 May
3-4 wk
22 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Apr – 4 May
15 Jun
3-4 wk
25 May
6 Jul
1 wk after
1 Jun
26 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
6 Jul
3-4 wk
19 May
27 Jul
0 wk
20 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
29 May
2-4 wk
19 May
12 Jun
0 wk
19 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 May
12 Jun
0 wk
20 May
2 Jun
0 wk
Spinach
Spinacia oleracea
21 – 28 Apr
21 Jul
3-4 wk
19 May
11 Aug
0 wk
16 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
4 – 18 Apr
20 Apr
6-8 wk
30 May
1 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
11 – 25 May
28 May
2-4 wk
8 Jun
11 Jun
3 wk after
1 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
21 Jun
3-4 wk
19 May
12 Jul
0 wk
20 May
2 Jul
0 wk

Herbs

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