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Rel. frost
Last spring frost (0°C) 24 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 232 days 24 Mar – 11 Nov
Probability that frost is over

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