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Last 24h: Slight frost recorded tonight at 05:00. Inspect for frost damage
Method
Rel. frost
Last spring frost (0°C) 20 May Frost 1 of 10 years · 20 years of data
Frost-free season 150 days 20 May – 17 Oct
Probability that frost is over

90% = Half of years are frost-free by this date. More about frost & season →

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Vegetables

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