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Rel. frost
Last spring frost (0°C) 16 May Frost 1 of 10 years · 20 years of data
Frost-free season 164 days 16 May – 27 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)
29 Apr – 13 May
19 Jun
5-7 wk
17 Jun
24 Jul
5 wk after
10 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
24 Apr – 8 May
1 Jul
4-6 wk
5 Jun
29 Jul
3 wk after
10 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
3 Apr – 1 May
8-12 wk
26 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
26 Feb – 12 Mar
14 Jun
5-7 wk
16 Apr
19 Jul
4 wk before
3 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
29 May – 5 Jun
9 Jun
3-4 wk
26 Jun
30 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 Jun
4-5 wk
22 Jul
10 wk after
26 Jun
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
28 Jun – 5 Jul
3-4 wk
26 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
21 Feb – 21 Mar
4 Apr
8-12 wk
16 May
30 May
Vid frost
29 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
19 Jun
1 wk before
10 May
9 Jun
1 wk before
Maize
Zea mays
Greenhouse
14 – 21 May
30 May
3-4 wk
11 Jun
20 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 May
8 Jul
3-4 wk
17 Jun
29 Jul
5 wk after
29 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
26 Feb – 12 Mar
14 Jun
5-7 wk
16 Apr
19 Jul
4 wk before
3 May
9 Jul
2 wk before
Potato
Solanum tuberosum
9 – 23 Apr
11 Jun
4-6 wk
21 May
9 Jul
1 wk after
21 May
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
26 Feb – 12 Mar
24 Jun
5-7 wk
16 Apr
29 Jul
4 wk before
10 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
13 – 20 Jun
14 Jun
3-4 wk
11 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 May
30 Jun
3-4 wk
17 Jun
21 Jul
5 wk after
29 May
11 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Apr – 8 May
26 Jun
4-6 wk
5 Jun
24 Jul
3 wk after
Lettuce
Lactuca sativa
9 – 16 Apr
13 Jul
3-4 wk
7 May
3 Aug
1 wk before
10 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
26 Jun
4-6 wk
7 May
24 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
5 – 19 Apr
5 Jun
2-4 wk
3 May
19 Jun
2 wk before
3 May
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
19 Jun
1 wk before
10 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
29 Mar – 5 Apr
28 Jul
3-4 wk
26 Apr
18 Aug
3 wk before
26 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
16 – 30 Apr
9 May
6-8 wk
11 Jun
20 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
29 May – 12 Jun
16 Jun
2-4 wk
26 Jun
30 Jun
6 wk after
11 Jun
20 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Apr – 8 May
26 Jun
4-6 wk
5 Jun
24 Jul
3 wk after
Garden pea
Pisum sativum
29 Mar – 5 Apr
28 Jun
3-4 wk
26 Apr
19 Jul
3 wk before
10 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
30 May – 13 Jun
4-6 wk
11 Jul
8 wk after
Lemon balm
Melissa officinalis
7 – 21 Mar
24 May
8-10 wk
16 May
19 Jul
Vid frost
11 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
10 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
19 Feb – 5 Mar
7 Jun
6-8 wk
16 Apr
19 Jul
4 wk before
10 May
9 Jul
1 wk before
Spearmint
Mentha spicata
1 Feb – 1 Mar
24 May
8-12 wk
26 Apr
19 Jul
3 wk before
11 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
29 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
8 – 22 Apr
9 May
8-10 wk
17 Jun
4 Jul
5 wk after
Common thyme
Thymus vulgaris
27 Mar – 10 Apr
14 May
8-10 wk
5 Jun
9 Jul
3 wk after
Oregano
Origanum vulgare
30 Mar – 13 Apr
28 May
6-8 wk
25 May
9 Jul
1 wk after
11 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Mar
28 May
6-8 wk
26 Apr
9 Jul
3 wk before
10 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Mar – 8 Apr
10 Apr
10-14 wk
17 Jun
19 Jun
5 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
13 – 20 Jun
3-4 wk
11 Jul
8 wk after
Cornflower
Centaurea cyanus
26 Apr
19 Jul
3 wk before
10 May
9 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
17 Apr – 1 May
5 May
8-10 wk
26 Jun
30 Jun
6 wk after
Sweet William
Dianthus barbatus
1 – 15 Mar
6-8 wk
26 Apr
3 wk before
21 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
1 – 15 May
19 May
6-8 wk
26 Jun
30 Jun
6 wk after
1 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 May
18 May
6-8 wk
4 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
16 Apr – 14 May
1 Jun
4-8 wk
11 Jun
29 Jun
4 wk after
11 Jun
19 Jun
4 wk after
Foxglove
Digitalis purpurea
15 Feb – 1 Mar
8-10 wk
26 Apr
3 wk before
29 May
2 wk after
Busy lizzie
Impatiens walleriana
29 Apr – 27 May
10 Jun
8-12 wk
22 Jul
5 Aug
10 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 May
6-8 wk
11 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
30 May – 13 Jun
4-6 wk
11 Jul
8 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Apr
24 Apr
8-10 wk
17 Jun
19 Jun
5 wk after
Love in a mist
Nigella damascena
10 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
1 – 15 May
9 May
6-8 wk
26 Jun
6 wk after
1 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
25 Mar – 22 Apr
24 Apr
8-12 wk
17 Jun
19 Jun
5 wk after
Cardoon
Cynara cardunculus
18 Apr – 16 May
8-12 wk
11 Jul
8 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
3 Apr – 1 May
4 May
8-12 wk
26 Jun
29 Jun
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
1 – 15 May
18 May
6-8 wk
26 Jun
29 Jun
6 wk after
Corn poppy
Papaver rhoeas
10 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
14 May
8-12 wk
7 May
9 Jul
1 wk before
21 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 May
8-10 wk
22 Jul
10 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Mar
4 Jun
5-8 wk
26 Apr
9 Jul
3 wk before
Stock
Matthiola incana
12 – 26 Mar
7 Jun
6-8 wk
7 May
19 Jul
1 wk before
29 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Mar
8 May
6-8 wk
26 Apr
19 Jun
3 wk before
29 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
15 – 29 May
27 May
4-6 wk
26 Jun
6 wk after
Garden pansy
Viola × wittrockiana
5 – 19 Feb
24 May
8-10 wk
16 Apr
19 Jul
4 wk before
21 May
9 Jul
1 wk after
Petunia
Petunia
Fleece
3 Apr – 1 May
5 May
8-12 wk
26 Jun
30 Jun
6 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Apr – 6 May
8 May
6-8 wk
17 Jun
19 Jun
5 wk after
26 Jun
6 wk after
Common zinnia
Zinnia elegans
30 May – 13 Jun
4-6 wk
11 Jul
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 Jun
3-5 wk
11 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
30 May – 13 Jun
1 Jun
4-6 wk
11 Jul
8 wk after
26 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
29 Apr – 27 May
15 May
8-12 wk
22 Jul
10 wk after
Bee balm
Monarda didyma
21 Feb – 21 Mar
24 Apr
8-12 wk
16 May
19 Jun
Vid frost
11 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Mar
8 Apr
6-8 wk
26 Apr
20 May
3 wk before
29 May
2 wk after
Safflower
Carthamus tinctorius
26 Apr
19 Jun
3 wk before
10 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
19 Feb – 5 Mar
28 May
6-8 wk
16 Apr
9 Jul
4 wk before
3 May
29 Jun
2 wk before
Bishop's flower
Ammi majus
19 Apr – 3 May
11 Jun
4-6 wk
31 May
9 Jul
2 wk after
29 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
3 – 17 Apr
4 Apr
10-12 wk
26 Jun
6 wk after
Sunflower
Helianthus annuus
13 – 20 Jun
18 Jun
3-4 wk
11 Jul
8 wk after
11 Jun
29 Jun
4 wk after
China aster
Callistephus chinensis
16 – 30 May
7 Jun
6-8 wk
11 Jul
19 Jul
8 wk after
26 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
1 – 15 May
11 May
6-8 wk
26 Jun
6 wk after
26 Jun
6 wk after
Hollyhock
Alcea rosea
1 – 15 Mar
6-8 wk
26 Apr
3 wk before
29 May
2 wk after
Alpine delphinium
Delphinium elatum
13 Mar – 10 Apr
24 Apr
8-12 wk
5 Jun
19 Jun
3 wk after
11 Jun
4 wk after
African marigold
Tagetes erecta
16 – 30 May
6-8 wk
11 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
22 Apr – 6 May
28 May
6-8 wk
17 Jun
9 Jul
5 wk after
26 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
14 Apr
8-10 wk
25 May
9 Jun
1 wk after
11 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
2 – 30 May
9 May
6-10 wk
11 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
10 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 May
14 May
8-10 wk
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Mar
8 May
6-8 wk
26 Apr
19 Jun
3 wk before
29 May
9 Jun
2 wk after