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Method
Rel. frost
Last spring frost (0°C) 30 May Frost 1 of 10 years · 20 years of data
Frost-free season 152 days 30 May – 29 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)
11 – 25 Apr
19 Jun
5-7 wk
30 May
24 Jul
0 wk
24 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Apr – 2 May
1 Jul
4-6 wk
30 May
29 Jul
0 wk
24 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
13 Mar – 10 Apr
8-12 wk
5 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Apr
14 Jun
5-7 wk
30 May
19 Jul
0 wk
17 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
15 – 22 May
3-4 wk
12 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
27 May – 3 Jun
11 Jun
4-5 wk
1 Jul
9 Jul
5 wk after
10 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 Jun
3-4 wk
8 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Mar – 4 Apr
4 Apr
8-12 wk
30 May
30 May
0 wk
12 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
19 Jun
1 wk before
24 May
9 Jun
1 wk before
Maize
Zea mays
Greenhouse
2 – 9 May
29 May
3-4 wk
30 May
19 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 May
8 Jul
3-4 wk
1 Jun
29 Jul
0 wk
12 Jun
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 May
9 Jul
0 wk
17 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Apr
14 Jun
5-7 wk
30 May
19 Jul
0 wk
17 May
9 Jul
2 wk before
Potato
Solanum tuberosum
23 Apr – 7 May
11 Jun
4-6 wk
4 Jun
9 Jul
1 wk after
4 Jun
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Apr
24 Jun
5-7 wk
30 May
29 Jul
0 wk
24 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
15 – 22 May
13 Jun
3-4 wk
12 Jun
4 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 May
8 Jul
3-4 wk
1 Jun
29 Jul
0 wk
12 Jun
19 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Apr – 2 May
26 Jun
4-6 wk
30 May
24 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 May
13 Jul
3-4 wk
30 May
3 Aug
0 wk
24 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Apr – 2 May
26 Jun
4-6 wk
30 May
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
5 Jun
2-4 wk
17 May
19 Jun
2 wk before
17 May
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
19 Jun
1 wk before
24 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
2 – 9 May
28 Jul
3-4 wk
30 May
18 Aug
0 wk
10 May
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jul
4-6 wk
12 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
4 – 18 Apr
8 May
6-8 wk
30 May
19 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 May
2-4 wk
12 Jun
2 wk after
10 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Apr – 2 May
26 Jun
4-6 wk
30 May
24 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 May
28 Jun
3-4 wk
30 May
19 Jul
0 wk
24 May
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
Fleece
1 – 15 May
22 May
4-6 wk
12 Jun
19 Jun
2 wk after
Lemon balm
Melissa officinalis
21 Mar – 4 Apr
24 May
8-10 wk
30 May
19 Jul
0 wk
25 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
24 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
4 – 18 Apr
7 Jun
6-8 wk
30 May
19 Jul
0 wk
24 May
9 Jul
1 wk before
Spearmint
Mentha spicata
7 Mar – 4 Apr
24 May
8-12 wk
30 May
19 Jul
0 wk
25 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
30 May
18 Aug
0 wk
12 Jun
8 Aug
2 wk after
Garden sage
Salvia officinalis
23 Mar – 6 Apr
9 May
8-10 wk
1 Jun
4 Jul
0 wk
Common thyme
Thymus vulgaris
21 Mar – 4 Apr
14 May
8-10 wk
30 May
9 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Apr
28 May
6-8 wk
30 May
9 Jul
0 wk
25 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
4 – 18 Apr
28 May
6-8 wk
30 May
9 Jul
0 wk
24 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
23 Feb – 23 Mar
10 Apr
10-14 wk
1 Jun
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
Fleece
15 – 22 May
29 May
3-4 wk
12 Jun
19 Jun
2 wk after
Cornflower
Centaurea cyanus
30 May
19 Jul
0 wk
24 May
9 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Apr
24 Apr
8-10 wk
12 Jun
19 Jun
2 wk after
Sweet William
Dianthus barbatus
4 – 18 Apr
6-8 wk
30 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Apr – 1 May
8 May
6-8 wk
12 Jun
19 Jun
2 wk after
12 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
15 – 29 Apr
14 May
6-8 wk
10 Jun
25 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
28 May
4-8 wk
25 Jun
25 Jun
4 wk after
25 Jun
4 wk after
Foxglove
Digitalis purpurea
21 Mar – 4 Apr
8-10 wk
30 May
0 wk
12 Jun
2 wk after
Busy lizzie
Impatiens walleriana
8 Apr – 6 May
9 Jun
8-12 wk
1 Jul
4 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
17 Apr – 1 May
18 May
6-8 wk
12 Jun
29 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
1 – 15 May
4-6 wk
12 Jun
2 wk after
Chinese lantern
Physalis alkekengi
23 Mar – 6 Apr
24 Apr
8-10 wk
1 Jun
19 Jun
0 wk
Love in a mist
Nigella damascena
30 May
4 Jul
0 wk
24 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 Apr – 1 May
28 Apr
6-8 wk
12 Jun
2 wk after
12 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
9 Mar – 6 Apr
24 Apr
8-12 wk
1 Jun
19 Jun
0 wk
Cardoon
Cynara cardunculus
20 Mar – 17 Apr
25 Mar
8-12 wk
12 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
20 Mar – 17 Apr
14 Apr
8-12 wk
12 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
17 Apr – 1 May
28 Apr
6-8 wk
12 Jun
2 wk after
Corn poppy
Papaver rhoeas
30 May
19 Jul
0 wk
24 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
7 Mar – 4 Apr
14 May
8-12 wk
30 May
9 Jul
0 wk
4 Jun
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
22 Apr – 6 May
4 May
8-10 wk
1 Jul
5 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Apr
4 Jun
5-8 wk
30 May
9 Jul
0 wk
Stock
Matthiola incana
4 – 18 Apr
7 Jun
6-8 wk
30 May
19 Jul
0 wk
12 Jun
9 Jul
2 wk after
Wormwood
Artemisia absinthium
4 – 18 Apr
8 May
6-8 wk
30 May
19 Jun
0 wk
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
1 – 15 May
7 May
4-6 wk
12 Jun
2 wk after
Garden pansy
Viola × wittrockiana
21 Mar – 4 Apr
24 May
8-10 wk
30 May
19 Jul
0 wk
4 Jun
9 Jul
1 wk after
Petunia
Petunia
20 Mar – 17 Apr
24 Apr
8-12 wk
12 Jun
19 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
6 – 20 Apr
8 May
6-8 wk
1 Jun
19 Jun
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
1 – 15 May
22 May
4-6 wk
12 Jun
19 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
8 – 22 May
29 May
3-5 wk
12 Jun
19 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 May
28 May
4-6 wk
12 Jun
25 Jun
2 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
8 Apr – 6 May
14 May
8-12 wk
1 Jul
9 Jul
5 wk after
Bee balm
Monarda didyma
7 Mar – 4 Apr
24 Apr
8-12 wk
30 May
19 Jun
0 wk
25 Jun
4 wk after
Yarrow
Achillea millefolium
4 – 18 Apr
8 Apr
6-8 wk
30 May
0 wk
12 Jun
2 wk after
Safflower
Carthamus tinctorius
30 May
19 Jun
0 wk
24 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Apr
28 May
6-8 wk
30 May
9 Jul
0 wk
14 Apr
29 Jun
7 wk before
Bishop's flower
Ammi majus
18 Apr – 2 May
11 Jun
4-6 wk
30 May
9 Jul
0 wk
12 Jun
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
20 Mar – 3 Apr
27 Mar
10-12 wk
12 Jun
2 wk after
Sunflower
Helianthus annuus
15 – 22 May
18 Jun
3-4 wk
12 Jun
9 Jul
2 wk after
25 Jun
29 Jun
4 wk after
China aster
Callistephus chinensis
17 Apr – 1 May
7 Jun
6-8 wk
12 Jun
19 Jul
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Apr
18 May
6-8 wk
5 Jun
29 Jun
1 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
4 – 18 Apr
6-8 wk
30 May
0 wk
12 Jun
2 wk after
Alpine delphinium
Delphinium elatum
7 Mar – 4 Apr
24 Apr
8-12 wk
30 May
19 Jun
0 wk
25 Jun
4 wk after
African marigold
Tagetes erecta
17 Apr – 1 May
18 May
6-8 wk
12 Jun
29 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 Apr
28 May
6-8 wk
1 Jun
9 Jul
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
21 Mar – 4 Apr
14 Apr
8-10 wk
30 May
9 Jun
0 wk
25 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
3 Apr – 1 May
8 May
6-10 wk
12 Jun
19 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
30 May
19 Jul
0 wk
24 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Apr
14 May
8-10 wk
12 Jun
9 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Apr
8 May
6-8 wk
30 May
19 Jun
0 wk
12 Jun
2 wk after