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-1.9°
Last 24h: Slight frost recorded tonight at 04:00. Inspect for frost damage
Method
Rel. frost
Last spring frost (0°C) 30 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 145 days 30 Apr – 22 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)
12 – 26 Mar
18 Jun
5-7 wk
30 Apr
23 Jul
0 wk
23 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Mar – 2 Apr
30 Jun
4-6 wk
30 Apr
28 Jul
0 wk
23 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
16 Feb – 16 Mar
8-12 wk
11 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Mar
13 Jun
5-7 wk
30 Apr
18 Jul
0 wk
18 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
13 – 20 Apr
18 Apr
3-4 wk
11 May
2 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 May
26 May
4-5 wk
5 Jun
23 Jun
5 wk after
5 Jun
13 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
15 – 22 May
3-4 wk
12 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Feb – 5 Mar
30 Mar
8-12 wk
30 Apr
25 May
0 wk
10 May
15 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 Apr
14 Jun
1 wk before
23 Apr
4 Jun
1 wk before
Maize
Zea mays
Greenhouse
2 – 9 Apr
8 Apr
3-4 wk
30 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Apr
7 Jul
3-4 wk
6 May
28 Jul
1 wk after
10 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 Apr
8 Jul
0 wk
18 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Mar
13 Jun
5-7 wk
30 Apr
18 Jul
0 wk
18 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
24 Mar – 7 Apr
30 May
4-6 wk
5 May
27 Jun
1 wk after
5 May
17 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Mar
23 Jun
5-7 wk
30 Apr
28 Jul
0 wk
23 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
21 – 28 Apr
23 Apr
3-4 wk
19 May
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Apr
9 Jun
3-4 wk
6 May
30 Jun
1 wk after
10 May
20 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Mar – 2 Apr
25 Jun
4-6 wk
30 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 Apr
12 Jul
3-4 wk
30 Apr
2 Aug
0 wk
23 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Mar – 2 Apr
25 Jun
4-6 wk
30 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Mar – 4 Apr
4 Jun
2-4 wk
18 Apr
18 Jun
2 wk before
18 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 Apr
14 Jun
1 wk before
23 Apr
4 Jun
1 wk before
Spinach
Spinacia oleracea
2 – 9 Apr
27 Jul
3-4 wk
30 Apr
17 Aug
0 wk
12 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 May – 10 Jun
4-6 wk
8 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
5 – 19 Mar
18 Mar
6-8 wk
30 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
13 – 27 Apr
25 Apr
2-4 wk
11 May
2 wk after
21 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Mar – 2 Apr
25 Jun
4-6 wk
30 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 Apr
27 Jun
3-4 wk
30 Apr
18 Jul
0 wk
23 Apr
8 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
30 Mar – 13 Apr
5 May
4-6 wk
11 May
2 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Feb – 5 Mar
23 May
8-10 wk
30 Apr
18 Jul
0 wk
21 May
8 Jul
3 wk after
Dill
Anethum graveolens
23 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Mar
6 Jun
6-8 wk
30 Apr
18 Jul
0 wk
23 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
5 Feb – 5 Mar
23 May
8-12 wk
30 Apr
18 Jul
0 wk
21 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
30 Apr
17 Aug
0 wk
10 May
7 Aug
1 wk after
Garden sage
Salvia officinalis
25 Feb – 11 Mar
8 May
8-10 wk
6 May
3 Jul
1 wk after
Common thyme
Thymus vulgaris
19 Feb – 5 Mar
13 May
8-10 wk
30 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Mar
27 May
6-8 wk
30 Apr
8 Jul
0 wk
21 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
5 – 19 Mar
27 May
6-8 wk
30 Apr
8 Jul
0 wk
23 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
28 Jan – 25 Feb
1 Apr
10-14 wk
6 May
10 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
Greenhouse
13 – 20 Apr
12 May
3-4 wk
11 May
2 Jun
2 wk after
Cornflower
Centaurea cyanus
30 Apr
18 Jul
0 wk
23 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
10 – 24 Mar
22 Mar
8-10 wk
19 May
3 wk after
Sweet William
Dianthus barbatus
5 – 19 Mar
6-8 wk
30 Apr
0 wk
5 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
24 Mar – 7 Apr
5 Apr
6-8 wk
19 May
3 wk after
8 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
19 Mar – 2 Apr
11 Apr
6-8 wk
14 May
23 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Mar – 23 Apr
25 Apr
4-8 wk
21 May
23 May
3 wk after
21 May
3 wk after
Foxglove
Digitalis purpurea
19 Feb – 5 Mar
8-10 wk
30 Apr
0 wk
10 May
1 wk after
Busy lizzie
Impatiens walleriana
13 Mar – 10 Apr
19 Apr
8-12 wk
5 Jun
14 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
24 Mar – 7 Apr
15 Apr
6-8 wk
19 May
27 May
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
7 – 21 Apr
4-6 wk
19 May
3 wk after
Chinese lantern
Physalis alkekengi
25 Feb – 11 Mar
23 Apr
8-10 wk
6 May
18 Jun
1 wk after
Love in a mist
Nigella damascena
30 Apr
3 Jul
0 wk
23 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
24 Mar – 7 Apr
26 Mar
6-8 wk
19 May
3 wk after
8 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
11 Feb – 11 Mar
23 Apr
8-12 wk
6 May
18 Jun
1 wk after
Cardoon
Cynara cardunculus
24 Feb – 24 Mar
24 Mar
8-12 wk
19 May
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
16 Feb – 16 Mar
28 Mar
8-12 wk
11 May
23 May
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
16 – 30 Mar
11 Apr
6-8 wk
11 May
23 May
2 wk after
Corn poppy
Papaver rhoeas
30 Apr
18 Jul
0 wk
23 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Feb – 5 Mar
13 May
8-12 wk
30 Apr
8 Jul
0 wk
5 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
10 – 24 Mar
7 Apr
8-10 wk
19 May
2 Jun
3 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Mar
3 Jun
5-8 wk
30 Apr
8 Jul
0 wk
Stock
Matthiola incana
5 – 19 Mar
6 Jun
6-8 wk
30 Apr
18 Jul
0 wk
10 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
5 – 19 Mar
7 May
6-8 wk
30 Apr
18 Jun
0 wk
10 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
30 Mar – 13 Apr
20 Apr
4-6 wk
11 May
18 May
2 wk after
Garden pansy
Viola × wittrockiana
19 Feb – 5 Mar
23 May
8-10 wk
30 Apr
18 Jul
0 wk
5 May
8 Jul
1 wk after
Petunia
Petunia
24 Feb – 24 Mar
22 Mar
8-12 wk
19 May
3 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Mar
7 May
6-8 wk
6 May
18 Jun
1 wk after
5 Jun
8 Jun
5 wk after
Common zinnia
Zinnia elegans
Fleece
30 Mar – 13 Apr
5 May
4-6 wk
11 May
2 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
6 – 20 Apr
12 May
3-5 wk
11 May
2 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
7 – 21 Apr
25 Apr
4-6 wk
19 May
23 May
3 wk after
5 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
24 Feb – 24 Mar
27 Apr
8-12 wk
19 May
22 Jun
3 wk after
Bee balm
Monarda didyma
5 Feb – 5 Mar
23 Apr
8-12 wk
30 Apr
18 Jun
0 wk
21 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
5 – 19 Mar
7 Apr
6-8 wk
30 Apr
19 May
0 wk
10 May
1 wk after
Safflower
Carthamus tinctorius
30 Apr
18 Jun
0 wk
23 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Mar
27 May
6-8 wk
30 Apr
8 Jul
0 wk
22 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
19 Mar – 2 Apr
10 Jun
4-6 wk
30 Apr
8 Jul
0 wk
10 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
16 Feb – 2 Mar
28 Feb
10-12 wk
11 May
2 wk after
Sunflower
Helianthus annuus
21 – 28 Apr
9 Jun
3-4 wk
19 May
30 Jun
3 wk after
21 May
20 Jun
3 wk after
China aster
Callistephus chinensis
24 Mar – 7 Apr
29 May
6-8 wk
19 May
10 Jul
3 wk after
5 Jun
30 Jun
5 wk after
Annual phlox
Phlox drummondii
16 – 30 Mar
15 Apr
6-8 wk
11 May
27 May
2 wk after
5 Jun
5 wk after
Hollyhock
Alcea rosea
5 – 19 Mar
6-8 wk
30 Apr
0 wk
10 May
1 wk after
Alpine delphinium
Delphinium elatum
5 Feb – 5 Mar
23 Apr
8-12 wk
30 Apr
18 Jun
0 wk
21 May
8 Jun
3 wk after
African marigold
Tagetes erecta
24 Mar – 7 Apr
15 Apr
6-8 wk
19 May
27 May
3 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Mar
19 May
6-8 wk
6 May
30 Jun
1 wk after
5 Jun
20 Jun
5 wk after
Wood sage
Salvia nemorosa
19 Feb – 5 Mar
13 Apr
8-10 wk
30 Apr
8 Jun
0 wk
21 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
2 – 30 Mar
21 Apr
6-10 wk
11 May
2 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
30 Apr
18 Jul
0 wk
23 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
10 – 24 Mar
28 Apr
8-10 wk
19 May
23 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Mar
7 May
6-8 wk
30 Apr
18 Jun
0 wk
10 May
8 Jun
1 wk after