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Rel. frost
Last spring frost (0°C) 18 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 215 days 18 Apr – 19 Nov
Probability that frost is over

75% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

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