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-2.7°
Last 24h: Slight frost recorded tonight at 05:00. Inspect for frost damage
Method
Rel. frost
Last spring frost (0°C) 3 May Frost 9 of 10 years · 20 years of data
Frost-free season 143 days 3 May – 23 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)
15 – 29 Mar
19 Jun
5-7 wk
3 May
24 Jul
0 wk
27 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Mar – 5 Apr
1 Jul
4-6 wk
3 May
29 Jul
0 wk
27 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 – 29 Mar
14 Jun
5-7 wk
3 May
19 Jul
0 wk
20 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
3 wk after
Florence Fennel
Foeniculum vulgare
9 – 16 May
31 May
4-5 wk
13 Jun
28 Jun
6 wk after
13 Jun
18 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Feb – 8 Mar
1 Apr
8-12 wk
3 May
27 May
0 wk
16 May
17 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 Apr
16 Jun
1 wk before
27 Apr
6 Jun
1 wk before
Maize
Zea mays
Season too short
5 – 12 Apr
3-4 wk
3 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Apr
8 Jul
3-4 wk
3 May
29 Jul
0 wk
16 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 May
9 Jul
0 wk
20 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 – 29 Mar
14 Jun
5-7 wk
3 May
19 Jul
0 wk
20 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
27 Mar – 10 Apr
28 May
4-6 wk
8 May
25 Jun
1 wk after
8 May
15 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Mar
24 Jun
5-7 wk
3 May
29 Jul
0 wk
27 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
23 – 30 Apr
19 May
3-4 wk
21 May
9 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Apr
8 Jun
3-4 wk
3 May
29 Jun
0 wk
16 May
19 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Mar – 5 Apr
26 Jun
4-6 wk
3 May
24 Jul
0 wk
Lettuce
Lactuca sativa
5 – 12 Apr
13 Jul
3-4 wk
3 May
3 Aug
0 wk
27 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Mar – 5 Apr
26 Jun
4-6 wk
3 May
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Mar – 6 Apr
3 Jun
2-4 wk
20 Apr
17 Jun
2 wk before
20 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 Apr
16 Jun
1 wk before
27 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
5 – 12 Apr
28 Jul
3-4 wk
3 May
18 Aug
0 wk
13 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
4 – 18 Jun
4-6 wk
16 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
8 – 22 Mar
6-8 wk
3 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
5 – 19 Apr
21 May
2-4 wk
3 May
4 Jun
0 wk
16 May
25 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Mar – 5 Apr
26 Jun
4-6 wk
3 May
24 Jul
0 wk
Garden pea
Pisum sativum
5 – 12 Apr
28 Jun
3-4 wk
3 May
19 Jul
0 wk
27 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
Greenhouse
9 – 23 Apr
27 Apr
4-6 wk
21 May
25 May
3 wk after
Lemon balm
Melissa officinalis
22 Feb – 8 Mar
24 May
8-10 wk
3 May
19 Jul
0 wk
29 May
9 Jul
4 wk after
Dill
Anethum graveolens
27 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Mar
7 Jun
6-8 wk
3 May
19 Jul
0 wk
27 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
8 Feb – 8 Mar
24 May
8-12 wk
3 May
19 Jul
0 wk
29 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
3 May
18 Aug
0 wk
16 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
22 Feb – 8 Mar
9 May
8-10 wk
3 May
4 Jul
0 wk
Common thyme
Thymus vulgaris
22 Feb – 8 Mar
14 May
8-10 wk
3 May
9 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Mar
28 May
6-8 wk
3 May
9 Jul
0 wk
29 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
8 – 22 Mar
28 May
6-8 wk
3 May
9 Jul
0 wk
27 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
25 Jan – 22 Feb
5 Apr
10-14 wk
3 May
14 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
23 – 30 Apr
4 May
3-4 wk
21 May
25 May
3 wk after
Cornflower
Centaurea cyanus
3 May
19 Jul
0 wk
27 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
12 – 26 Mar
20 Mar
8-10 wk
21 May
3 wk after
Sweet William
Dianthus barbatus
8 – 22 Mar
6-8 wk
3 May
0 wk
8 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
26 Mar – 9 Apr
3 Apr
6-8 wk
21 May
3 wk after
18 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
30 Mar – 13 Apr
3 Apr
6-8 wk
25 May
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
3 Apr – 1 May
17 Apr
4-8 wk
29 May
4 wk after
29 May
4 wk after
Foxglove
Digitalis purpurea
22 Feb – 8 Mar
8-10 wk
3 May
0 wk
16 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
7 Mar – 4 Apr
15 May
8-12 wk
30 May
10 Jul
4 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
26 Mar – 9 Apr
13 Apr
6-8 wk
21 May
25 May
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
4 wk after
Chinese lantern
Physalis alkekengi
22 Feb – 8 Mar
24 Apr
8-10 wk
3 May
19 Jun
0 wk
Love in a mist
Nigella damascena
3 May
4 Jul
0 wk
27 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
26 Mar – 9 Apr
6-8 wk
21 May
3 wk after
18 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
8 Feb – 8 Mar
24 Apr
8-12 wk
3 May
19 Jun
0 wk
Cardoon
Cynara cardunculus
7 Mar – 4 Apr
25 Mar
8-12 wk
30 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
26 Feb – 26 Mar
20 Mar
8-12 wk
21 May
3 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
26 Mar – 9 Apr
3 Apr
6-8 wk
21 May
3 wk after
Corn poppy
Papaver rhoeas
3 May
19 Jul
0 wk
27 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
8 Feb – 8 Mar
14 May
8-12 wk
3 May
9 Jul
0 wk
8 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
21 Mar – 4 Apr
30 Mar
8-10 wk
30 May
4 wk after
Sweet pea
Lathyrus odoratus
8 – 29 Mar
4 Jun
5-8 wk
3 May
9 Jul
0 wk
Stock
Matthiola incana
8 – 22 Mar
7 Jun
6-8 wk
3 May
19 Jul
0 wk
16 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
8 – 22 Mar
8 May
6-8 wk
3 May
19 Jun
0 wk
16 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
9 – 23 Apr
12 Apr
4-6 wk
21 May
3 wk after
Garden pansy
Viola × wittrockiana
22 Feb – 8 Mar
24 May
8-10 wk
3 May
19 Jul
0 wk
8 May
9 Jul
1 wk after
Petunia
Petunia
Fleece
26 Feb – 26 Mar
20 Mar
8-12 wk
21 May
3 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Mar
8 May
6-8 wk
3 May
19 Jun
0 wk
13 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
9 – 23 Apr
27 Apr
4-6 wk
21 May
25 May
3 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
16 – 30 Apr
4 May
3-5 wk
21 May
25 May
3 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
9 – 23 Apr
29 Apr
4-6 wk
21 May
27 May
3 wk after
29 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
7 Mar – 4 Apr
19 Apr
8-12 wk
30 May
14 Jun
4 wk after
Bee balm
Monarda didyma
8 Feb – 8 Mar
24 Apr
8-12 wk
3 May
19 Jun
0 wk
29 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
8 – 22 Mar
8 Apr
6-8 wk
3 May
20 May
0 wk
16 May
2 wk after
Safflower
Carthamus tinctorius
3 May
19 Jun
0 wk
27 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Mar
28 May
6-8 wk
3 May
9 Jul
0 wk
18 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
22 Mar – 5 Apr
11 Jun
4-6 wk
3 May
9 Jul
0 wk
16 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
26 Feb – 12 Mar
26 Feb
10-12 wk
21 May
3 wk after
Sunflower
Helianthus annuus
2 – 9 May
13 Jun
3-4 wk
30 May
4 Jul
4 wk after
29 May
24 Jun
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
2 Jun
6-8 wk
30 May
14 Jul
4 wk after
13 Jun
4 Jul
6 wk after
Annual phlox
Phlox drummondii
26 Mar – 9 Apr
30 Mar
6-8 wk
21 May
3 wk after
13 Jun
6 wk after
Hollyhock
Alcea rosea
8 – 22 Mar
6-8 wk
3 May
0 wk
16 May
2 wk after
Alpine delphinium
Delphinium elatum
8 Feb – 8 Mar
24 Apr
8-12 wk
3 May
19 Jun
0 wk
29 May
9 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
26 Mar – 9 Apr
13 Apr
6-8 wk
21 May
25 May
3 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Mar
23 May
6-8 wk
3 May
4 Jul
0 wk
13 Jun
24 Jun
6 wk after
Wood sage
Salvia nemorosa
22 Feb – 8 Mar
14 Apr
8-10 wk
3 May
9 Jun
0 wk
29 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
12 Mar – 9 Apr
13 Apr
6-10 wk
21 May
25 May
3 wk after
California goldenpoppy
Eschscholzia californica
3 May
19 Jul
0 wk
27 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
3 May
8-10 wk
30 May
28 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Mar
8 May
6-8 wk
3 May
19 Jun
0 wk
16 May
9 Jun
2 wk after