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-1.7°
Last 24h: Slight frost recorded tonight at 05:00. Inspect for frost damage
Method
Rel. frost
Last spring frost (0°C) 21 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 161 days 21 Apr – 29 Sep
Probability that frost is over

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