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Near frost tomorrow at 23:00. Bring in or cover sensitive plants
Method
Rel. frost
Last spring frost (0°C) 20 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 166 days 20 Apr – 3 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)
2 – 16 Mar
14 Jun
5-7 wk
20 Apr
19 Jul
0 wk
24 Apr
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Mar
26 Jun
4-6 wk
20 Apr
24 Jul
0 wk
24 Apr
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
10 Feb – 10 Mar
8-12 wk
5 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Mar
9 Jun
5-7 wk
20 Apr
14 Jul
0 wk
20 Apr
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
7 – 14 Apr
3-4 wk
5 May
2 wk after
Florence Fennel
Foeniculum vulgare
28 Apr – 5 May
2 Jun
4-5 wk
2 Jun
30 Jun
6 wk after
8 Jun
20 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 May
3-4 wk
7 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Jan – 23 Feb
20 Mar
8-12 wk
20 Apr
15 May
0 wk
11 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 Apr
4 Jun
1 wk after
24 Apr
25 May
1 wk after
Maize
Zea mays
Season too short
24 – 31 Mar
3-4 wk
21 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
31 Mar – 7 Apr
3 Jul
3-4 wk
28 Apr
24 Jul
1 wk after
11 May
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Apr
4 Jul
0 wk
20 Apr
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Mar
9 Jun
5-7 wk
20 Apr
14 Jul
0 wk
20 Apr
4 Jul
0 wk
Potato
Solanum tuberosum
25 Mar – 8 Apr
17 May
4-6 wk
6 May
14 Jun
2 wk after
6 May
4 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Mar
19 Jun
5-7 wk
20 Apr
24 Jul
0 wk
24 Apr
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
7 – 14 Apr
6 Jun
3-4 wk
5 May
27 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
31 Mar – 7 Apr
19 May
3-4 wk
28 Apr
9 Jun
1 wk after
11 May
30 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Mar
21 Jun
4-6 wk
20 Apr
19 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Mar
8 Jul
3-4 wk
20 Apr
29 Jul
0 wk
24 Apr
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Mar
21 Jun
4-6 wk
20 Apr
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Mar – 6 Apr
27 May
2-4 wk
20 Apr
10 Jun
0 wk
20 Apr
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Apr
4 Jun
1 wk after
24 Apr
25 May
1 wk after
Spinach
Spinacia oleracea
23 – 30 Mar
23 Jul
3-4 wk
20 Apr
13 Aug
0 wk
16 Apr
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
22 May – 5 Jun
4-6 wk
3 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
24 Feb – 10 Mar
26 Feb
6-8 wk
21 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
24 Mar – 7 Apr
8 Jun
2-4 wk
21 Apr
22 Jun
0 wk
11 May
12 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Mar
21 Jun
4-6 wk
20 Apr
19 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Mar
23 Jun
3-4 wk
20 Apr
14 Jul
0 wk
24 Apr
4 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
24 Mar – 7 Apr
15 May
4-6 wk
5 May
12 Jun
2 wk after
Lemon balm
Melissa officinalis
9 – 23 Feb
19 May
8-10 wk
20 Apr
14 Jul
0 wk
25 May
4 Jul
5 wk after
Dill
Anethum graveolens
24 Apr
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
23 Feb – 9 Mar
2 Jun
6-8 wk
20 Apr
14 Jul
0 wk
24 Apr
4 Jul
1 wk after
Spearmint
Mentha spicata
26 Jan – 23 Feb
19 May
8-12 wk
20 Apr
14 Jul
0 wk
25 May
4 Jul
5 wk after
Coriander
Coriandrum sativum
20 Apr
13 Aug
0 wk
11 May
3 Aug
3 wk after
Garden sage
Salvia officinalis
17 Feb – 3 Mar
4 May
8-10 wk
28 Apr
29 Jun
1 wk after
Common thyme
Thymus vulgaris
9 – 23 Feb
9 May
8-10 wk
20 Apr
4 Jul
0 wk
Oregano
Origanum vulgare
23 Feb – 9 Mar
23 May
6-8 wk
20 Apr
4 Jul
0 wk
25 May
24 Jun
5 wk after
Parsley
Petroselinum crispum
23 Feb – 9 Mar
23 May
6-8 wk
20 Apr
4 Jul
0 wk
24 Apr
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
20 Jan – 17 Feb
5 Apr
10-14 wk
28 Apr
14 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
7 – 14 Apr
22 May
3-4 wk
5 May
12 Jun
2 wk after
Cornflower
Centaurea cyanus
20 Apr
14 Jul
0 wk
24 Apr
4 Jul
1 wk after
Statice
Limonium sinuatum
8 – 22 Mar
23 Mar
8-10 wk
17 May
18 May
4 wk after
Sweet William
Dianthus barbatus
23 Feb – 9 Mar
6-8 wk
20 Apr
0 wk
6 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
22 Mar – 5 Apr
6 Apr
6-8 wk
17 May
18 May
4 wk after
3 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Mar
21 Apr
6-8 wk
9 May
2 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Mar – 27 Apr
5 May
4-8 wk
25 May
2 Jun
5 wk after
25 May
5 wk after
Foxglove
Digitalis purpurea
9 – 23 Feb
8-10 wk
20 Apr
0 wk
11 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
22 Feb – 22 Mar
2 Jun
8-12 wk
17 May
28 Jul
4 wk after
Creeping zinnia
Sanvitalia procumbens
22 Mar – 5 Apr
16 Apr
6-8 wk
17 May
28 May
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 Apr
4-6 wk
17 May
4 wk after
Chinese lantern
Physalis alkekengi
17 Feb – 3 Mar
19 Apr
8-10 wk
28 Apr
14 Jun
1 wk after
Love in a mist
Nigella damascena
20 Apr
29 Jun
0 wk
24 Apr
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
10 – 24 Mar
17 Apr
6-8 wk
5 May
29 May
2 wk after
18 Jun
8 wk after
Purple-top vervain
Verbena bonariensis
3 Feb – 3 Mar
19 Apr
8-12 wk
28 Apr
14 Jun
1 wk after
Cardoon
Cynara cardunculus
22 Feb – 22 Mar
20 Mar
8-12 wk
17 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
10 Feb – 10 Mar
7 Apr
8-12 wk
5 May
2 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
10 – 24 Mar
21 Apr
6-8 wk
5 May
2 Jun
2 wk after
Corn poppy
Papaver rhoeas
20 Apr
14 Jul
0 wk
24 Apr
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
26 Jan – 23 Feb
9 May
8-12 wk
20 Apr
4 Jul
0 wk
6 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
8 – 22 Mar
23 Apr
8-10 wk
17 May
18 Jun
4 wk after
Sweet pea
Lathyrus odoratus
23 Feb – 16 Mar
30 May
5-8 wk
20 Apr
4 Jul
0 wk
Stock
Matthiola incana
23 Feb – 9 Mar
2 Jun
6-8 wk
20 Apr
14 Jul
0 wk
11 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
23 Feb – 9 Mar
3 May
6-8 wk
20 Apr
14 Jun
0 wk
11 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
24 Mar – 7 Apr
30 Apr
4-6 wk
5 May
28 May
2 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Feb
19 May
8-10 wk
20 Apr
14 Jul
0 wk
6 May
4 Jul
2 wk after
Petunia
Petunia
22 Feb – 22 Mar
23 Mar
8-12 wk
17 May
18 May
4 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Mar
3 May
6-8 wk
28 Apr
14 Jun
1 wk after
8 Jun
7 wk after
Common zinnia
Zinnia elegans
Fleece
24 Mar – 7 Apr
15 May
4-6 wk
5 May
12 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
31 Mar – 14 Apr
22 May
3-5 wk
5 May
12 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 Apr
5 May
4-6 wk
17 May
2 Jun
4 wk after
8 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
22 Feb – 22 Mar
7 May
8-12 wk
17 May
2 Jul
4 wk after
Bee balm
Monarda didyma
26 Jan – 23 Feb
19 Apr
8-12 wk
20 Apr
14 Jun
0 wk
25 May
4 Jun
5 wk after
Yarrow
Achillea millefolium
23 Feb – 9 Mar
3 Apr
6-8 wk
20 Apr
15 May
0 wk
11 May
3 wk after
Safflower
Carthamus tinctorius
20 Apr
14 Jun
0 wk
24 Apr
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
23 Feb – 9 Mar
23 May
6-8 wk
20 Apr
4 Jul
0 wk
2 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 Mar
6 Jun
4-6 wk
20 Apr
4 Jul
0 wk
11 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
10 – 24 Feb
18 Mar
10-12 wk
5 May
27 May
2 wk after
Sunflower
Helianthus annuus
19 – 26 Apr
13 Jun
3-4 wk
17 May
4 Jul
4 wk after
25 May
24 Jun
5 wk after
China aster
Callistephus chinensis
22 Mar – 5 Apr
2 Jun
6-8 wk
17 May
14 Jul
4 wk after
8 Jun
4 Jul
7 wk after
Annual phlox
Phlox drummondii
10 – 24 Mar
16 Apr
6-8 wk
5 May
28 May
2 wk after
8 Jun
7 wk after
Hollyhock
Alcea rosea
23 Feb – 9 Mar
6-8 wk
20 Apr
0 wk
11 May
3 wk after
Alpine delphinium
Delphinium elatum
26 Jan – 23 Feb
19 Apr
8-12 wk
20 Apr
14 Jun
0 wk
25 May
4 Jun
5 wk after
African marigold
Tagetes erecta
22 Mar – 5 Apr
16 Apr
6-8 wk
17 May
28 May
4 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Mar
23 May
6-8 wk
28 Apr
4 Jul
1 wk after
8 Jun
24 Jun
7 wk after
Wood sage
Salvia nemorosa
9 – 23 Feb
9 Apr
8-10 wk
20 Apr
4 Jun
0 wk
25 May
25 May
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
24 Feb – 24 Mar
1 May
6-10 wk
5 May
12 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
20 Apr
14 Jul
0 wk
24 Apr
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
8 – 22 Mar
5 May
8-10 wk
17 May
30 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
23 Feb – 9 Mar
3 May
6-8 wk
20 Apr
14 Jun
0 wk
11 May
4 Jun
3 wk after