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Rel. frost
Last spring frost (0°C) 30 May Frost 1 of 10 years · 20 years of data
Frost-free season 158 days 30 May – 4 Nov
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)
13 – 27 May
19 Jun
5-7 wk
1 Jul
24 Jul
5 wk after
24 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 May
1 Jul
4-6 wk
19 Jun
29 Jul
3 wk after
24 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
17 Apr – 15 May
8-12 wk
10 Jul
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Mar
14 Jun
5-7 wk
30 Apr
19 Jul
4 wk before
17 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
12 – 19 Jun
16 Jun
3-4 wk
10 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 Jul
4-5 wk
5 Aug
10 wk after
10 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
12 – 19 Jul
3-4 wk
9 Aug
10 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Mar – 4 Apr
4 Apr
8-12 wk
30 May
30 May
Vid frost
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
28 May – 4 Jun
6 Jun
3-4 wk
25 Jun
27 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 Jun
8 Jul
3-4 wk
1 Jul
29 Jul
5 wk after
12 Jun
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Mar
14 Jun
5-7 wk
30 Apr
19 Jul
4 wk before
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)
12 – 26 Mar
24 Jun
5-7 wk
30 Apr
29 Jul
4 wk before
24 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
27 Jun – 4 Jul
3-4 wk
25 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 Jun
8 Jul
3-4 wk
1 Jul
29 Jul
5 wk after
12 Jun
19 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 May
26 Jun
4-6 wk
19 Jun
24 Jul
3 wk after
Lettuce
Lactuca sativa
23 – 30 Apr
13 Jul
3-4 wk
21 May
3 Aug
1 wk before
24 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
26 Jun
4-6 wk
21 May
24 Jul
1 wk before
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
12 – 19 Apr
28 Jul
3-4 wk
10 May
18 Aug
3 wk before
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
30 Apr – 14 May
16 May
6-8 wk
25 Jun
27 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
12 – 26 Jun
23 Jun
2-4 wk
10 Jul
6 wk after
25 Jun
27 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 May
26 Jun
4-6 wk
19 Jun
24 Jul
3 wk after
Garden pea
Pisum sativum
12 – 19 Apr
28 Jun
3-4 wk
10 May
19 Jul
3 wk before
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
13 – 27 Jun
4-6 wk
25 Jul
8 wk after
Lemon balm
Melissa officinalis
21 Mar – 4 Apr
24 May
8-10 wk
30 May
19 Jul
Vid frost
25 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
24 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Mar
7 Jun
6-8 wk
30 Apr
19 Jul
4 wk before
24 May
9 Jul
1 wk before
Spearmint
Mentha spicata
15 Feb – 15 Mar
24 May
8-12 wk
10 May
19 Jul
3 wk before
25 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
12 Jun
8 Aug
2 wk after
Garden sage
Salvia officinalis
22 Apr – 6 May
9 May
8-10 wk
1 Jul
4 Jul
5 wk after
Common thyme
Thymus vulgaris
10 – 24 Apr
14 May
8-10 wk
19 Jun
9 Jul
3 wk after
Oregano
Origanum vulgare
13 – 27 Apr
28 May
6-8 wk
8 Jun
9 Jul
1 wk after
25 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
28 May
6-8 wk
10 May
9 Jul
3 wk before
24 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
25 Mar – 22 Apr
10 Apr
10-14 wk
1 Jul
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
27 Jun – 4 Jul
3-4 wk
25 Jul
8 wk after
Cornflower
Centaurea cyanus
10 May
19 Jul
3 wk before
24 May
9 Jul
1 wk before
Statice
Limonium sinuatum
16 – 30 May
8-10 wk
25 Jul
8 wk after
Sweet William
Dianthus barbatus
15 – 29 Mar
6-8 wk
10 May
3 wk before
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
30 May – 13 Jun
6-8 wk
25 Jul
8 wk after
12 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
23 May – 6 Jun
6-8 wk
18 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
5 Jun
4-8 wk
25 Jun
3 Jul
4 wk after
25 Jun
4 wk after
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
3 wk before
12 Jun
2 wk after
Busy lizzie
Impatiens walleriana
13 May – 10 Jun
17 Jun
8-12 wk
5 Aug
12 Aug
10 wk after
Creeping zinnia
Sanvitalia procumbens
30 May – 13 Jun
6-8 wk
25 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Jun
4-6 wk
25 Jul
8 wk after
Chinese lantern
Physalis alkekengi
22 Apr – 6 May
24 Apr
8-10 wk
1 Jul
5 wk after
Love in a mist
Nigella damascena
24 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
30 May – 13 Jun
6-8 wk
25 Jul
8 wk after
12 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
8 Apr – 6 May
24 Apr
8-12 wk
1 Jul
5 wk after
Cardoon
Cynara cardunculus
2 – 30 May
8-12 wk
25 Jul
8 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
2 – 30 May
8-12 wk
25 Jul
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
30 May – 13 Jun
6-8 wk
25 Jul
8 wk after
Corn poppy
Papaver rhoeas
24 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
14 May
8-12 wk
21 May
9 Jul
1 wk before
4 Jun
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
27 May – 10 Jun
8-10 wk
5 Aug
10 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
4 Jun
5-8 wk
10 May
9 Jul
3 wk before
Stock
Matthiola incana
26 Mar – 9 Apr
7 Jun
6-8 wk
21 May
19 Jul
1 wk before
12 Jun
9 Jul
2 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
8 May
6-8 wk
10 May
19 Jun
3 wk before
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
29 May – 12 Jun
31 May
4-6 wk
10 Jul
6 wk after
Garden pansy
Viola × wittrockiana
19 Feb – 5 Mar
24 May
8-10 wk
30 Apr
19 Jul
4 wk before
4 Jun
9 Jul
1 wk after
Petunia
Petunia
2 – 30 May
8-12 wk
25 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
6 – 20 May
8 May
6-8 wk
1 Jul
5 wk after
10 Jul
6 wk after
Common zinnia
Zinnia elegans
13 – 27 Jun
4-6 wk
25 Jul
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
20 Jun – 4 Jul
3-5 wk
25 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
13 – 27 Jun
4-6 wk
25 Jul
8 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
13 May – 10 Jun
22 May
8-12 wk
5 Aug
10 wk after
Bee balm
Monarda didyma
7 Mar – 4 Apr
24 Apr
8-12 wk
30 May
19 Jun
Vid frost
25 Jun
4 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
8 Apr
6-8 wk
10 May
20 May
3 wk before
12 Jun
2 wk after
Safflower
Carthamus tinctorius
10 May
19 Jun
3 wk before
24 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
5 – 19 Mar
28 May
6-8 wk
30 Apr
9 Jul
4 wk before
17 May
29 Jun
2 wk before
Bishop's flower
Ammi majus
3 – 17 May
11 Jun
4-6 wk
14 Jun
9 Jul
2 wk after
12 Jun
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
17 Apr – 1 May
10-12 wk
10 Jul
6 wk after
Sunflower
Helianthus annuus
27 Jun – 4 Jul
3-4 wk
25 Jul
8 wk after
25 Jun
29 Jun
4 wk after
China aster
Callistephus chinensis
30 May – 13 Jun
7 Jun
6-8 wk
25 Jul
8 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
15 – 29 May
23 May
6-8 wk
10 Jul
6 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
3 wk before
12 Jun
2 wk after
Alpine delphinium
Delphinium elatum
27 Mar – 24 Apr
24 Apr
8-12 wk
19 Jun
19 Jun
3 wk after
25 Jun
4 wk after
African marigold
Tagetes erecta
30 May – 13 Jun
6-8 wk
25 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 May
28 May
6-8 wk
1 Jul
9 Jul
5 wk after
10 Jul
6 wk after
Wood sage
Salvia nemorosa
30 Mar – 13 Apr
14 Apr
8-10 wk
8 Jun
9 Jun
1 wk after
25 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
16 May – 13 Jun
16 May
6-10 wk
25 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
24 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
16 – 30 May
8-10 wk
25 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
8 May
6-8 wk
10 May
19 Jun
3 wk before
12 Jun
2 wk after