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Rel. frost
Last spring frost (0°C) 17 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 218 days 17 Apr – 21 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)
31 Mar – 14 Apr
20 Jun
5-7 wk
19 May
25 Jul
5 wk after
11 Apr
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
2 Jul
4-6 wk
7 May
30 Jul
3 wk after
11 Apr
20 Jul
1 wk before
Chili pepper
Capsicum annuum
31 Mar – 28 Apr
21 Apr
8-12 wk
23 Jun
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
28 Jan – 11 Feb
15 Jun
5-7 wk
18 Mar
20 Jul
4 wk before
4 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
26 May – 2 Jun
1 Jul
3-4 wk
23 Jun
22 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
19 – 26 May
12 Jun
4-5 wk
23 Jun
10 Jul
10 wk after
28 May
30 Jun
6 wk after
Butter bean
Phaseolus lunatus
4 – 11 Jun
3-4 wk
2 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Jan – 20 Feb
5 Apr
8-12 wk
17 Apr
31 May
Vid frost
30 Apr
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 Apr
20 Jun
1 wk before
11 Apr
10 Jun
1 wk before
Maize
Zea mays
15 – 22 May
21 Jun
3-4 wk
12 Jun
12 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
9 Jul
3-4 wk
19 May
30 Jul
5 wk after
30 Apr
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
28 Jan – 11 Feb
15 Jun
5-7 wk
18 Mar
20 Jul
4 wk before
4 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
11 – 25 Mar
12 Jun
4-6 wk
22 Apr
10 Jul
1 wk after
22 Apr
30 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Jan – 11 Feb
25 Jun
5-7 wk
18 Mar
30 Jul
4 wk before
11 Apr
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
26 May – 2 Jun
14 Jul
3-4 wk
23 Jun
4 Aug
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
4 Jul
3-4 wk
19 May
25 Jul
5 wk after
30 Apr
15 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
27 Jun
4-6 wk
7 May
25 Jul
3 wk after
Lettuce
Lactuca sativa
11 – 18 Mar
14 Jul
3-4 wk
8 Apr
4 Aug
1 wk before
11 Apr
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Feb – 11 Mar
27 Jun
4-6 wk
8 Apr
25 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Mar
6 Jun
2-4 wk
4 Apr
20 Jun
2 wk before
4 Apr
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 Apr
20 Jun
1 wk before
11 Apr
10 Jun
1 wk before
Spinach
Spinacia oleracea
28 Feb – 7 Mar
29 Jul
3-4 wk
28 Mar
19 Aug
3 wk before
28 Mar
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
19 May – 2 Jun
4-6 wk
30 Jun
11 wk after
Garden tomato
Solanum lycopersicum
17 Apr – 1 May
31 May
6-8 wk
12 Jun
12 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 May
16 Jul
2-4 wk
12 Jun
30 Jul
8 wk after
28 May
20 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
27 Jun
4-6 wk
7 May
25 Jul
3 wk after
Garden pea
Pisum sativum
28 Feb – 7 Mar
29 Jun
3-4 wk
28 Mar
20 Jul
3 wk before
11 Apr
10 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
12 – 26 May
22 Jun
4-6 wk
23 Jun
20 Jul
10 wk after
Lemon balm
Melissa officinalis
6 – 20 Feb
25 May
8-10 wk
17 Apr
20 Jul
Vid frost
13 May
10 Jul
4 wk after
Dill
Anethum graveolens
11 Apr
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
21 Jan – 4 Feb
8 Jun
6-8 wk
18 Mar
20 Jul
4 wk before
11 Apr
10 Jul
1 wk before
Spearmint
Mentha spicata
3 – 31 Jan
25 May
8-12 wk
28 Mar
20 Jul
3 wk before
13 May
10 Jul
4 wk after
Coriander
Coriandrum sativum
30 Apr
9 Aug
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
10 May
8-10 wk
19 May
5 Jul
5 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
15 May
8-10 wk
7 May
10 Jul
3 wk after
Oregano
Origanum vulgare
1 – 15 Mar
29 May
6-8 wk
26 Apr
10 Jul
1 wk after
13 May
30 Jun
4 wk after
Parsley
Petroselinum crispum
31 Jan – 14 Feb
29 May
6-8 wk
28 Mar
10 Jul
3 wk before
11 Apr
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
11 Apr
10-14 wk
19 May
20 Jun
5 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
26 May – 2 Jun
29 Jun
3-4 wk
23 Jun
20 Jul
10 wk after
Cornflower
Centaurea cyanus
28 Mar
20 Jul
3 wk before
11 Apr
10 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Apr
15 May
8-10 wk
12 Jun
10 Jul
8 wk after
Sweet William
Dianthus barbatus
31 Jan – 14 Feb
6-8 wk
28 Mar
3 wk before
22 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Apr – 1 May
29 May
6-8 wk
12 Jun
10 Jul
8 wk after
30 Jun
30 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Apr
29 May
6-8 wk
5 Jun
10 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
18 Mar – 15 Apr
12 Jun
4-8 wk
13 May
10 Jul
4 wk after
13 May
30 Jun
4 wk after
Foxglove
Digitalis purpurea
17 – 31 Jan
8-10 wk
28 Mar
3 wk before
30 Apr
2 wk after
Busy lizzie
Impatiens walleriana
31 Mar – 28 Apr
10 Jul
8-12 wk
23 Jun
4 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
17 Apr – 1 May
8 Jun
6-8 wk
12 Jun
20 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
12 – 26 May
23 May
4-6 wk
23 Jun
10 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
25 Apr
8-10 wk
19 May
20 Jun
5 wk after
Love in a mist
Nigella damascena
11 Apr
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 Apr – 1 May
19 May
6-8 wk
12 Jun
30 Jun
8 wk after
30 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
25 Apr
8-12 wk
19 May
20 Jun
5 wk after
Cardoon
Cynara cardunculus
20 Mar – 17 Apr
26 Mar
8-12 wk
12 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
31 Mar – 28 Apr
15 May
8-12 wk
23 Jun
10 Jul
10 wk after
Globe amaranth
Gomphrena globosa
28 Apr – 12 May
29 May
6-8 wk
23 Jun
10 Jul
10 wk after
Corn poppy
Papaver rhoeas
11 Apr
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
14 Jan – 11 Feb
15 May
8-12 wk
8 Apr
10 Jul
1 wk before
22 Apr
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
14 – 28 Apr
25 May
8-10 wk
23 Jun
20 Jul
10 wk after
Sweet pea
Lathyrus odoratus
31 Jan – 21 Feb
5 Jun
5-8 wk
28 Mar
10 Jul
3 wk before
Stock
Matthiola incana
11 – 25 Feb
8 Jun
6-8 wk
8 Apr
20 Jul
1 wk before
30 Apr
10 Jul
2 wk after
Wormwood
Artemisia absinthium
31 Jan – 14 Feb
9 May
6-8 wk
28 Mar
20 Jun
3 wk before
30 Apr
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
12 – 26 May
7 Jun
4-6 wk
23 Jun
5 Jul
10 wk after
Garden pansy
Viola × wittrockiana
7 – 21 Jan
25 May
8-10 wk
18 Mar
20 Jul
4 wk before
22 Apr
10 Jul
1 wk after
Petunia
Petunia
20 Mar – 17 Apr
15 May
8-12 wk
12 Jun
10 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
9 May
6-8 wk
19 May
20 Jun
5 wk after
28 May
10 Jun
6 wk after
Common zinnia
Zinnia elegans
1 – 15 May
22 Jun
4-6 wk
12 Jun
20 Jul
8 wk after
Common morning glory
Ipomoea purpurea
19 May – 2 Jun
29 Jun
3-5 wk
23 Jun
20 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 May
12 Jun
4-6 wk
12 Jun
10 Jul
8 wk after
28 May
30 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
7 Apr – 5 May
14 Jun
8-12 wk
30 Jun
9 Aug
11 wk after
Bee balm
Monarda didyma
23 Jan – 20 Feb
25 Apr
8-12 wk
17 Apr
20 Jun
Vid frost
13 May
10 Jun
4 wk after
Yarrow
Achillea millefolium
31 Jan – 14 Feb
9 Apr
6-8 wk
28 Mar
21 May
3 wk before
30 Apr
11 May
2 wk after
Safflower
Carthamus tinctorius
28 Mar
20 Jun
3 wk before
11 Apr
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
21 Jan – 4 Feb
29 May
6-8 wk
18 Mar
10 Jul
4 wk before
4 Apr
30 Jun
2 wk before
Bishop's flower
Ammi majus
21 Mar – 4 Apr
12 Jun
4-6 wk
2 May
10 Jul
2 wk after
30 Apr
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
31 Mar – 14 Apr
11 Apr
10-12 wk
23 Jun
10 wk after
Sunflower
Helianthus annuus
15 – 22 May
19 Jun
3-4 wk
12 Jun
10 Jul
8 wk after
13 May
30 Jun
4 wk after
China aster
Callistephus chinensis
17 Apr – 1 May
8 Jun
6-8 wk
12 Jun
20 Jul
8 wk after
28 May
10 Jul
6 wk after
Annual phlox
Phlox drummondii
2 – 16 Apr
8 Jun
6-8 wk
28 May
20 Jul
6 wk after
28 May
10 Jul
6 wk after
Hollyhock
Alcea rosea
31 Jan – 14 Feb
6-8 wk
28 Mar
3 wk before
30 Apr
2 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
25 Apr
8-12 wk
7 May
20 Jun
3 wk after
13 May
10 Jun
4 wk after
African marigold
Tagetes erecta
17 Apr – 1 May
8 Jun
6-8 wk
12 Jun
20 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
29 May
6-8 wk
19 May
10 Jul
5 wk after
28 May
30 Jun
6 wk after
Wood sage
Salvia nemorosa
15 Feb – 1 Mar
15 Apr
8-10 wk
26 Apr
10 Jun
1 wk after
13 May
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
14 Apr – 12 May
8 Jun
6-10 wk
23 Jun
20 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
11 Apr
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Apr
15 May
8-10 wk
12 Jun
10 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
31 Jan – 14 Feb
9 May
6-8 wk
28 Mar
20 Jun
3 wk before
30 Apr
10 Jun
2 wk after