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-0.2°
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 173 days 21 Apr – 11 Oct
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
21 Jun
5-7 wk
21 Apr
26 Jul
0 wk
15 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Mar
3 Jul
4-6 wk
21 Apr
31 Jul
0 wk
15 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
14 Feb – 14 Mar
8-12 wk
9 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Mar
16 Jun
5-7 wk
21 Apr
21 Jul
0 wk
8 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
11 – 18 Apr
28 Apr
3-4 wk
9 May
19 May
3 wk after
Florence Fennel
Foeniculum vulgare
27 Apr – 4 May
9 Jun
4-5 wk
1 Jun
7 Jul
6 wk after
1 Jun
27 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
14 – 21 May
3-4 wk
11 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
27 Jan – 24 Feb
2 Apr
8-12 wk
21 Apr
28 May
0 wk
4 May
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
15 Apr
17 Jun
1 wk before
15 Apr
7 Jun
1 wk before
Maize
Zea mays
Greenhouse
24 – 31 Mar
18 Apr
3-4 wk
21 Apr
9 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 – 31 Mar
10 Jul
3-4 wk
21 Apr
31 Jul
0 wk
4 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 Apr
11 Jul
0 wk
8 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Mar
16 Jun
5-7 wk
21 Apr
21 Jul
0 wk
8 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
15 – 29 Mar
8 Jun
4-6 wk
26 Apr
6 Jul
1 wk after
26 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Mar
26 Jun
5-7 wk
21 Apr
31 Jul
0 wk
15 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
20 – 27 Apr
3 May
3-4 wk
18 May
24 May
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 – 31 Mar
17 Jun
3-4 wk
21 Apr
8 Jul
0 wk
4 May
28 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Mar
28 Jun
4-6 wk
21 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
24 – 31 Mar
15 Jul
3-4 wk
21 Apr
5 Aug
0 wk
15 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Mar
28 Jun
4-6 wk
21 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Mar
7 Jun
2-4 wk
8 Apr
21 Jun
2 wk before
8 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
15 Apr
17 Jun
1 wk before
15 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
24 – 31 Mar
30 Jul
3-4 wk
21 Apr
20 Aug
0 wk
1 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
23 May – 6 Jun
4-6 wk
4 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
24 Feb – 10 Mar
28 Mar
6-8 wk
21 Apr
9 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
11 – 25 Apr
5 May
2-4 wk
9 May
19 May
3 wk after
17 May
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Mar
28 Jun
4-6 wk
21 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
24 – 31 Mar
30 Jun
3-4 wk
21 Apr
21 Jul
0 wk
15 Apr
11 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
6 – 20 Apr
11 Apr
4-6 wk
18 May
4 wk after
Lemon balm
Melissa officinalis
10 – 24 Feb
26 May
8-10 wk
21 Apr
21 Jul
0 wk
17 May
11 Jul
4 wk after
Dill
Anethum graveolens
15 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
24 Feb – 10 Mar
9 Jun
6-8 wk
21 Apr
21 Jul
0 wk
15 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
27 Jan – 24 Feb
26 May
8-12 wk
21 Apr
21 Jul
0 wk
17 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
21 Apr
20 Aug
0 wk
4 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
10 – 24 Feb
11 May
8-10 wk
21 Apr
6 Jul
0 wk
Common thyme
Thymus vulgaris
10 – 24 Feb
16 May
8-10 wk
21 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
24 Feb – 10 Mar
30 May
6-8 wk
21 Apr
11 Jul
0 wk
17 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
24 Feb – 10 Mar
30 May
6-8 wk
21 Apr
11 Jul
0 wk
15 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
13 Jan – 10 Feb
10 Apr
10-14 wk
21 Apr
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
20 – 27 Apr
3-4 wk
18 May
4 wk after
Cornflower
Centaurea cyanus
21 Apr
21 Jul
0 wk
15 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
9 – 23 Mar
29 Mar
8-10 wk
18 May
24 May
4 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
23 Mar – 6 Apr
12 Apr
6-8 wk
18 May
24 May
4 wk after
4 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
18 Mar – 1 Apr
15 Apr
6-8 wk
13 May
27 May
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Mar – 19 Apr
29 Apr
4-8 wk
17 May
27 May
4 wk after
17 May
17 May
4 wk after
Foxglove
Digitalis purpurea
10 – 24 Feb
8-10 wk
21 Apr
0 wk
4 May
2 wk after
Busy lizzie
Impatiens walleriana
9 Mar – 6 Apr
29 Apr
8-12 wk
1 Jun
24 Jun
6 wk after
Creeping zinnia
Sanvitalia procumbens
23 Mar – 6 Apr
22 Apr
6-8 wk
18 May
3 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
6 – 20 Apr
4-6 wk
18 May
4 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Feb
26 Apr
8-10 wk
21 Apr
21 Jun
0 wk
Love in a mist
Nigella damascena
21 Apr
6 Jul
0 wk
15 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
23 Mar – 6 Apr
2 Apr
6-8 wk
18 May
4 wk after
4 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
27 Jan – 24 Feb
26 Apr
8-12 wk
21 Apr
21 Jun
0 wk
Cardoon
Cynara cardunculus
23 Feb – 23 Mar
27 Mar
8-12 wk
18 May
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
23 Feb – 23 Mar
4 Mar
8-12 wk
18 May
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
23 Mar – 6 Apr
6-8 wk
18 May
4 wk after
Corn poppy
Papaver rhoeas
21 Apr
21 Jul
0 wk
15 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
27 Jan – 24 Feb
16 May
8-12 wk
21 Apr
11 Jul
0 wk
26 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
23 Mar – 6 Apr
8 Apr
8-10 wk
1 Jun
3 Jun
6 wk after
Sweet pea
Lathyrus odoratus
24 Feb – 17 Mar
6 Jun
5-8 wk
21 Apr
11 Jul
0 wk
Stock
Matthiola incana
24 Feb – 10 Mar
9 Jun
6-8 wk
21 Apr
21 Jul
0 wk
4 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
24 Feb – 10 Mar
10 May
6-8 wk
21 Apr
21 Jun
0 wk
4 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
28 Mar – 11 Apr
24 Apr
4-6 wk
9 May
22 May
3 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Feb
26 May
8-10 wk
21 Apr
21 Jul
0 wk
26 Apr
11 Jul
1 wk after
Petunia
Petunia
23 Feb – 23 Mar
29 Mar
8-12 wk
18 May
24 May
4 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Feb – 10 Mar
10 May
6-8 wk
21 Apr
21 Jun
0 wk
1 Jun
11 Jun
6 wk after
Common zinnia
Zinnia elegans
6 – 20 Apr
11 Apr
4-6 wk
18 May
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
13 – 27 Apr
18 Apr
3-5 wk
18 May
4 wk after
Garden cosmos
Cosmos bipinnatus
6 – 20 Apr
29 Apr
4-6 wk
18 May
27 May
4 wk after
1 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
9 Mar – 6 Apr
3 Apr
8-12 wk
1 Jun
6 wk after
Bee balm
Monarda didyma
27 Jan – 24 Feb
26 Apr
8-12 wk
21 Apr
21 Jun
0 wk
17 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
24 Feb – 10 Mar
10 Apr
6-8 wk
21 Apr
22 May
0 wk
4 May
12 May
2 wk after
Safflower
Carthamus tinctorius
21 Apr
21 Jun
0 wk
15 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
24 Feb – 10 Mar
30 May
6-8 wk
21 Apr
11 Jul
0 wk
6 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
10 – 24 Mar
13 Jun
4-6 wk
21 Apr
11 Jul
0 wk
4 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
23 Feb – 9 Mar
26 Feb
10-12 wk
18 May
4 wk after
Sunflower
Helianthus annuus
20 – 27 Apr
18 Jun
3-4 wk
18 May
9 Jul
4 wk after
17 May
29 Jun
4 wk after
China aster
Callistephus chinensis
23 Mar – 6 Apr
7 Jun
6-8 wk
18 May
19 Jul
4 wk after
1 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
14 – 28 Mar
22 Apr
6-8 wk
9 May
3 Jun
3 wk after
1 Jun
6 wk after
Hollyhock
Alcea rosea
24 Feb – 10 Mar
6-8 wk
21 Apr
0 wk
4 May
2 wk after
Alpine delphinium
Delphinium elatum
27 Jan – 24 Feb
26 Apr
8-12 wk
21 Apr
21 Jun
0 wk
17 May
11 Jun
4 wk after
African marigold
Tagetes erecta
23 Mar – 6 Apr
22 Apr
6-8 wk
18 May
3 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
24 Feb – 10 Mar
28 May
6-8 wk
21 Apr
9 Jul
0 wk
1 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
10 – 24 Feb
16 Apr
8-10 wk
21 Apr
11 Jun
0 wk
17 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
9 Mar – 6 Apr
28 Mar
6-10 wk
18 May
4 wk after
California goldenpoppy
Eschscholzia californica
21 Apr
21 Jul
0 wk
15 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
9 – 23 Mar
12 May
8-10 wk
18 May
7 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
24 Feb – 10 Mar
10 May
6-8 wk
21 Apr
21 Jun
0 wk
4 May
11 Jun
2 wk after