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Rel. frost
Last spring frost (0°C) 20 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 243 days 20 Mar – 18 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)
30 Jan – 13 Feb
19 Jun
5-7 wk
20 Mar
24 Jul
0 wk
14 Mar
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Feb
1 Jul
4-6 wk
20 Mar
29 Jul
0 wk
14 Mar
19 Jul
1 wk before
Chili pepper
Capsicum annuum
5 Feb – 5 Mar
17 Apr
8-12 wk
30 Apr
12 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Jan – 13 Feb
14 Jun
5-7 wk
20 Mar
19 Jul
0 wk
7 Mar
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
2 – 9 Apr
22 Jun
3-4 wk
30 Apr
13 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
26 Mar – 2 Apr
11 Jun
4-5 wk
30 Apr
9 Jul
6 wk after
30 Apr
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
26 May – 2 Jun
3-4 wk
23 Jun
14 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Dec – 23 Jan
4 Apr
8-12 wk
20 Mar
30 May
0 wk
2 Apr
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 Mar
19 Jun
1 wk before
14 Mar
9 Jun
1 wk before
Maize
Zea mays
19 – 26 Mar
12 Jun
3-4 wk
16 Apr
3 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Feb
8 Jul
3-4 wk
20 Mar
29 Jul
0 wk
2 Apr
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Mar
9 Jul
0 wk
7 Mar
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Jan – 13 Feb
14 Jun
5-7 wk
20 Mar
19 Jul
0 wk
7 Mar
9 Jul
2 wk before
Potato
Solanum tuberosum
11 – 25 Feb
11 Jun
4-6 wk
25 Mar
9 Jul
1 wk after
25 Mar
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Jan – 13 Feb
24 Jun
5-7 wk
20 Mar
29 Jul
0 wk
14 Mar
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
2 – 9 Apr
10 Jul
3-4 wk
30 Apr
31 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Feb
25 Jun
3-4 wk
20 Mar
16 Jul
0 wk
2 Apr
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Feb
26 Jun
4-6 wk
20 Mar
24 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Feb
13 Jul
3-4 wk
20 Mar
3 Aug
0 wk
14 Mar
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Feb
26 Jun
4-6 wk
20 Mar
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Feb
5 Jun
2-4 wk
7 Mar
19 Jun
2 wk before
7 Mar
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 Mar
19 Jun
1 wk before
14 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
20 – 27 Feb
28 Jul
3-4 wk
20 Mar
18 Aug
0 wk
28 Feb
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
21 Apr – 5 May
4-6 wk
2 Jun
11 wk after
Garden tomato
Solanum lycopersicum
19 Feb – 5 Mar
22 May
6-8 wk
16 Apr
3 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
19 Mar – 2 Apr
12 Jul
2-4 wk
16 Apr
26 Jul
4 wk after
30 Apr
16 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Feb
26 Jun
4-6 wk
20 Mar
24 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Feb
28 Jun
3-4 wk
20 Mar
19 Jul
0 wk
14 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
19 Mar – 2 Apr
18 Jun
4-6 wk
30 Apr
16 Jul
6 wk after
Lemon balm
Melissa officinalis
9 – 23 Jan
24 May
8-10 wk
20 Mar
19 Jul
0 wk
15 Apr
9 Jul
4 wk after
Dill
Anethum graveolens
14 Mar
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
23 Jan – 6 Feb
7 Jun
6-8 wk
20 Mar
19 Jul
0 wk
14 Feb
9 Jul
5 wk before
Spearmint
Mentha spicata
26 Dec – 23 Jan
24 May
8-12 wk
20 Mar
19 Jul
0 wk
15 Apr
9 Jul
4 wk after
Coriander
Coriandrum sativum
20 Mar
18 Aug
0 wk
2 Apr
8 Aug
2 wk after
Garden sage
Salvia officinalis
9 – 23 Jan
9 May
8-10 wk
20 Mar
4 Jul
0 wk
Common thyme
Thymus vulgaris
9 – 23 Jan
14 May
8-10 wk
20 Mar
9 Jul
0 wk
Oregano
Origanum vulgare
23 Jan – 6 Feb
28 May
6-8 wk
20 Mar
9 Jul
0 wk
15 Apr
29 Jun
4 wk after
Parsley
Petroselinum crispum
23 Jan – 6 Feb
28 May
6-8 wk
20 Mar
9 Jul
0 wk
14 Mar
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
12 Dec – 9 Jan
10 Apr
10-14 wk
20 Mar
19 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
2 – 9 Apr
25 Jun
3-4 wk
30 Apr
16 Jul
6 wk after
Cornflower
Centaurea cyanus
20 Mar
19 Jul
0 wk
14 Mar
9 Jul
1 wk before
Statice
Limonium sinuatum
5 – 19 Feb
14 May
8-10 wk
16 Apr
9 Jul
4 wk after
Sweet William
Dianthus barbatus
23 Jan – 6 Feb
6-8 wk
20 Mar
0 wk
25 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
19 Feb – 5 Mar
28 May
6-8 wk
16 Apr
9 Jul
4 wk after
2 Jun
29 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Feb
28 May
6-8 wk
11 Apr
9 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
18 Feb – 18 Mar
11 Jun
4-8 wk
15 Apr
9 Jul
4 wk after
15 Apr
29 Jun
4 wk after
Foxglove
Digitalis purpurea
9 – 23 Jan
8-10 wk
20 Mar
0 wk
2 Apr
2 wk after
Busy lizzie
Impatiens walleriana
5 Feb – 5 Mar
9 Jul
8-12 wk
30 Apr
3 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
19 Feb – 5 Mar
7 Jun
6-8 wk
16 Apr
19 Jul
4 wk after
Hyacinth bean
Dolichos lablab
6 – 20 Apr
6 May
4-6 wk
18 May
3 Jun
8 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Jan
24 Apr
8-10 wk
20 Mar
19 Jun
0 wk
Love in a mist
Nigella damascena
20 Mar
4 Jul
0 wk
14 Mar
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
19 Feb – 5 Mar
18 May
6-8 wk
16 Apr
29 Jun
4 wk after
2 Jun
19 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
26 Dec – 23 Jan
24 Apr
8-12 wk
20 Mar
19 Jun
0 wk
Cardoon
Cynara cardunculus
22 Jan – 19 Feb
25 Mar
8-12 wk
16 Apr
20 May
4 wk after
Regal-foxtail
Ptilotus nobilis
5 Feb – 5 Mar
11 May
8-12 wk
30 Apr
6 Jul
6 wk after
Globe amaranth
Gomphrena globosa
5 – 19 Mar
25 May
6-8 wk
30 Apr
6 Jul
6 wk after
Corn poppy
Papaver rhoeas
20 Mar
19 Jul
0 wk
14 Mar
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
26 Dec – 23 Jan
14 May
8-12 wk
20 Mar
9 Jul
0 wk
25 Mar
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
19 Feb – 5 Mar
24 May
8-10 wk
30 Apr
19 Jul
6 wk after
Sweet pea
Lathyrus odoratus
23 Jan – 13 Feb
4 Jun
5-8 wk
20 Mar
9 Jul
0 wk
Stock
Matthiola incana
23 Jan – 6 Feb
7 Jun
6-8 wk
20 Mar
19 Jul
0 wk
2 Apr
9 Jul
2 wk after
Wormwood
Artemisia absinthium
23 Jan – 6 Feb
8 May
6-8 wk
20 Mar
19 Jun
0 wk
2 Apr
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
19 Mar – 2 Apr
3 Jun
4-6 wk
30 Apr
1 Jul
6 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Jan
24 May
8-10 wk
20 Mar
19 Jul
0 wk
25 Mar
9 Jul
1 wk after
Petunia
Petunia
22 Jan – 19 Feb
14 May
8-12 wk
16 Apr
9 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Jan – 6 Feb
8 May
6-8 wk
20 Mar
19 Jun
0 wk
30 Apr
9 Jun
6 wk after
Common zinnia
Zinnia elegans
5 – 19 Mar
21 Jun
4-6 wk
16 Apr
19 Jul
4 wk after
Common morning glory
Ipomoea purpurea
26 Mar – 9 Apr
25 Jun
3-5 wk
30 Apr
16 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 Mar
11 Jun
4-6 wk
16 Apr
9 Jul
4 wk after
30 Apr
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
23 Feb – 23 Mar
10 Jun
8-12 wk
18 May
5 Aug
8 wk after
Bee balm
Monarda didyma
26 Dec – 23 Jan
24 Apr
8-12 wk
20 Mar
19 Jun
0 wk
15 Apr
9 Jun
4 wk after
Yarrow
Achillea millefolium
23 Jan – 6 Feb
8 Apr
6-8 wk
20 Mar
20 May
0 wk
2 Apr
10 May
2 wk after
Safflower
Carthamus tinctorius
20 Mar
19 Jun
0 wk
14 Mar
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
23 Jan – 6 Feb
28 May
6-8 wk
20 Mar
9 Jul
0 wk
2 Feb
29 Jun
7 wk before
Bishop's flower
Ammi majus
6 – 20 Feb
11 Jun
4-6 wk
20 Mar
9 Jul
0 wk
2 Apr
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
5 – 19 Feb
10 Apr
10-12 wk
30 Apr
19 Jun
6 wk after
Sunflower
Helianthus annuus
19 – 26 Mar
18 Jun
3-4 wk
16 Apr
9 Jul
4 wk after
15 Apr
29 Jun
4 wk after
China aster
Callistephus chinensis
19 Feb – 5 Mar
7 Jun
6-8 wk
16 Apr
19 Jul
4 wk after
30 Apr
9 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Feb
7 Jun
6-8 wk
7 Apr
19 Jul
3 wk after
30 Apr
9 Jul
6 wk after
Hollyhock
Alcea rosea
23 Jan – 6 Feb
6-8 wk
20 Mar
0 wk
2 Apr
2 wk after
Alpine delphinium
Delphinium elatum
26 Dec – 23 Jan
24 Apr
8-12 wk
20 Mar
19 Jun
0 wk
15 Apr
9 Jun
4 wk after
African marigold
Tagetes erecta
19 Feb – 5 Mar
7 Jun
6-8 wk
16 Apr
19 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
23 Jan – 6 Feb
28 May
6-8 wk
20 Mar
9 Jul
0 wk
30 Apr
29 Jun
6 wk after
Wood sage
Salvia nemorosa
9 – 23 Jan
14 Apr
8-10 wk
20 Mar
9 Jun
0 wk
15 Apr
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
19 Feb – 19 Mar
4 Jun
6-10 wk
30 Apr
16 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
20 Mar
19 Jul
0 wk
14 Mar
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
5 – 19 Feb
14 May
8-10 wk
16 Apr
9 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
23 Jan – 6 Feb
8 May
6-8 wk
20 Mar
19 Jun
0 wk
7 Mar
9 Jun
2 wk before