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-1.2°
Last 24h: Slight frost recorded tonight at 05:00. Inspect for frost damage
Method
Rel. frost
Last spring frost (0°C) 1 May Frost 9 of 10 years · 20 years of data
Frost-free season 142 days 1 May – 20 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)
13 – 27 Mar
20 Jun
5-7 wk
1 May
25 Jul
0 wk
25 Apr
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
20 Mar – 3 Apr
2 Jul
4-6 wk
1 May
30 Jul
0 wk
25 Apr
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
24 Feb – 24 Mar
8-12 wk
19 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Mar
15 Jun
5-7 wk
1 May
20 Jul
0 wk
18 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
21 – 28 Apr
3-4 wk
19 May
3 wk after
Florence Fennel
Foeniculum vulgare
7 – 14 May
22 May
4-5 wk
11 Jun
19 Jun
6 wk after
11 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
24 – 31 May
3-4 wk
21 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Feb – 6 Mar
2 Apr
8-12 wk
1 May
28 May
0 wk
14 May
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 Apr
17 Jun
1 wk before
25 Apr
7 Jun
1 wk before
Maize
Zea mays
Season too short
3 – 10 Apr
3-4 wk
1 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 Apr
4 Jul
3-4 wk
1 May
25 Jul
0 wk
14 May
15 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 May
10 Jul
0 wk
18 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Mar
15 Jun
5-7 wk
1 May
20 Jul
0 wk
18 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
25 Mar – 8 Apr
30 May
4-6 wk
6 May
27 Jun
1 wk after
6 May
17 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Mar
25 Jun
5-7 wk
1 May
30 Jul
0 wk
25 Apr
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
21 – 28 Apr
18 May
3-4 wk
19 May
8 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 Apr
10 Jun
3-4 wk
1 May
1 Jul
0 wk
14 May
21 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Mar – 3 Apr
27 Jun
4-6 wk
1 May
25 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 Apr
14 Jul
3-4 wk
1 May
4 Aug
0 wk
25 Apr
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Mar – 3 Apr
27 Jun
4-6 wk
1 May
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Mar – 4 Apr
5 Jun
2-4 wk
18 Apr
19 Jun
2 wk before
18 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Apr
17 Jun
1 wk before
25 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 Apr
29 Jul
3-4 wk
1 May
19 Aug
0 wk
11 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
6 – 20 Mar
6-8 wk
1 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
3 – 17 Apr
20 May
2-4 wk
1 May
3 Jun
0 wk
14 May
24 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Mar – 3 Apr
27 Jun
4-6 wk
1 May
25 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 Apr
29 Jun
3-4 wk
1 May
20 Jul
0 wk
25 Apr
10 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
Greenhouse
7 – 21 Apr
26 Apr
4-6 wk
19 May
24 May
3 wk after
Lemon balm
Melissa officinalis
20 Feb – 6 Mar
25 May
8-10 wk
1 May
20 Jul
0 wk
27 May
10 Jul
4 wk after
Dill
Anethum graveolens
25 Apr
25 Jul
1 wk before
Wild chives
Allium schoenoprasum
6 – 20 Mar
8 Jun
6-8 wk
1 May
20 Jul
0 wk
25 Apr
10 Jul
1 wk before
Spearmint
Mentha spicata
6 Feb – 6 Mar
25 May
8-12 wk
1 May
20 Jul
0 wk
27 May
10 Jul
4 wk after
Coriander
Coriandrum sativum
1 May
14 Aug
0 wk
14 May
4 Aug
2 wk after
Garden sage
Salvia officinalis
20 Feb – 6 Mar
10 May
8-10 wk
1 May
5 Jul
0 wk
Common thyme
Thymus vulgaris
20 Feb – 6 Mar
15 May
8-10 wk
1 May
10 Jul
0 wk
Oregano
Origanum vulgare
6 – 20 Mar
29 May
6-8 wk
1 May
10 Jul
0 wk
27 May
30 Jun
4 wk after
Parsley
Petroselinum crispum
6 – 20 Mar
29 May
6-8 wk
1 May
10 Jul
0 wk
25 Apr
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
23 Jan – 20 Feb
26 Mar
10-14 wk
1 May
4 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
Greenhouse
21 – 28 Apr
3 May
3-4 wk
19 May
24 May
3 wk after
Cornflower
Centaurea cyanus
1 May
20 Jul
0 wk
25 Apr
10 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
10 – 24 Mar
26 Mar
8-10 wk
19 May
21 May
3 wk after
Sweet William
Dianthus barbatus
6 – 20 Mar
6-8 wk
1 May
0 wk
6 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
24 Mar – 7 Apr
9 Apr
6-8 wk
19 May
21 May
3 wk after
16 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
28 Mar – 11 Apr
2 Apr
6-8 wk
23 May
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 – 29 Apr
16 Apr
4-8 wk
27 May
4 wk after
27 May
4 wk after
Foxglove
Digitalis purpurea
20 Feb – 6 Mar
8-10 wk
1 May
0 wk
14 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
5 Mar – 2 Apr
14 May
8-12 wk
28 May
9 Jul
4 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
24 Mar – 7 Apr
19 Apr
6-8 wk
19 May
31 May
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
4-6 wk
28 May
4 wk after
Chinese lantern
Physalis alkekengi
20 Feb – 6 Mar
20 Apr
8-10 wk
1 May
15 Jun
0 wk
Love in a mist
Nigella damascena
1 May
5 Jul
0 wk
25 Apr
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
24 Mar – 7 Apr
30 Mar
6-8 wk
19 May
3 wk after
16 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
6 Feb – 6 Mar
20 Apr
8-12 wk
1 May
15 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
24 Feb – 24 Mar
26 Mar
8-12 wk
19 May
21 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
24 Feb – 24 Mar
19 Mar
8-12 wk
19 May
3 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
24 Mar – 7 Apr
2 Apr
6-8 wk
19 May
3 wk after
Corn poppy
Papaver rhoeas
1 May
20 Jul
0 wk
25 Apr
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
6 Feb – 6 Mar
15 May
8-12 wk
1 May
10 Jul
0 wk
6 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
19 Mar – 2 Apr
5 Apr
8-10 wk
28 May
31 May
4 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Mar
5 Jun
5-8 wk
1 May
10 Jul
0 wk
Stock
Matthiola incana
6 – 20 Mar
8 Jun
6-8 wk
1 May
20 Jul
0 wk
14 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
6 – 20 Mar
9 May
6-8 wk
1 May
20 Jun
0 wk
14 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
7 – 21 Apr
11 Apr
4-6 wk
19 May
3 wk after
Garden pansy
Viola × wittrockiana
20 Feb – 6 Mar
25 May
8-10 wk
1 May
20 Jul
0 wk
6 May
10 Jul
1 wk after
Petunia
Petunia
Fleece
24 Feb – 24 Mar
26 Mar
8-12 wk
19 May
21 May
3 wk after
Sweet Scabious
Scabiosa atropurpurea
6 – 20 Mar
4 May
6-8 wk
1 May
15 Jun
0 wk
11 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
7 – 21 Apr
26 Apr
4-6 wk
19 May
24 May
3 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
14 – 28 Apr
3 May
3-5 wk
19 May
24 May
3 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
7 – 21 Apr
26 Apr
4-6 wk
19 May
24 May
3 wk after
27 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
5 Mar – 2 Apr
18 Apr
8-12 wk
28 May
13 Jun
4 wk after
Bee balm
Monarda didyma
6 Feb – 6 Mar
25 Apr
8-12 wk
1 May
20 Jun
0 wk
27 May
10 Jun
4 wk after
Yarrow
Achillea millefolium
6 – 20 Mar
9 Apr
6-8 wk
1 May
21 May
0 wk
14 May
2 wk after
Safflower
Carthamus tinctorius
1 May
20 Jun
0 wk
25 Apr
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
6 – 20 Mar
29 May
6-8 wk
1 May
10 Jul
0 wk
16 Mar
30 Jun
7 wk before
Bishop's flower
Ammi majus
20 Mar – 3 Apr
12 Jun
4-6 wk
1 May
10 Jul
0 wk
14 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
24 Feb – 10 Mar
10-12 wk
19 May
3 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
3 Jun
3-4 wk
28 May
24 Jun
4 wk after
27 May
14 Jun
4 wk after
China aster
Callistephus chinensis
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
4 wk after
11 Jun
24 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
6 – 20 Mar
19 Apr
6-8 wk
1 May
31 May
0 wk
27 May
4 wk after
Hollyhock
Alcea rosea
6 – 20 Mar
6-8 wk
1 May
0 wk
14 May
2 wk after
Alpine delphinium
Delphinium elatum
6 Feb – 6 Mar
25 Apr
8-12 wk
1 May
20 Jun
0 wk
27 May
10 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
24 Mar – 7 Apr
19 Apr
6-8 wk
19 May
31 May
3 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 Mar
13 May
6-8 wk
1 May
24 Jun
0 wk
11 Jun
14 Jun
6 wk after
Wood sage
Salvia nemorosa
20 Feb – 6 Mar
15 Apr
8-10 wk
1 May
10 Jun
0 wk
27 May
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
10 Mar – 7 Apr
12 Apr
6-10 wk
19 May
24 May
3 wk after
California goldenpoppy
Eschscholzia californica
1 May
20 Jul
0 wk
25 Apr
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
19 Mar – 2 Apr
24 Apr
8-10 wk
28 May
19 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
6 – 20 Mar
9 May
6-8 wk
1 May
20 Jun
0 wk
14 May
10 Jun
2 wk after