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Rel. frost
Last spring frost (0°C) 6 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 195 days 6 Apr – 18 Oct
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)
20 Mar – 3 Apr
21 Jun
5-7 wk
8 May
26 Jul
5 wk after
31 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Mar
3 Jul
4-6 wk
26 Apr
31 Jul
3 wk after
31 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
20 Mar – 17 Apr
16 Apr
8-12 wk
12 Jun
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Jan
16 Jun
5-7 wk
7 Mar
21 Jul
4 wk before
24 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
15 – 22 May
17 Jun
3-4 wk
12 Jun
8 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
13 Jun
4-5 wk
12 Jun
11 Jul
10 wk after
17 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
23 – 30 May
29 May
3-4 wk
20 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Jan – 9 Feb
6 Apr
8-12 wk
6 Apr
1 Jun
Vid frost
19 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 Mar
21 Jun
1 wk before
31 Mar
11 Jun
1 wk before
Maize
Zea mays
4 – 11 May
7 Jun
3-4 wk
1 Jun
28 Jun
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
10 Jul
3-4 wk
8 May
31 Jul
5 wk after
19 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Jan
16 Jun
5-7 wk
7 Mar
21 Jul
4 wk before
24 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
28 Feb – 14 Mar
10 Jun
4-6 wk
11 Apr
8 Jul
1 wk after
11 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Jan
26 Jun
5-7 wk
7 Mar
31 Jul
4 wk before
31 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
15 – 22 May
3 Jul
3-4 wk
12 Jun
24 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
25 Jun
3-4 wk
8 May
16 Jul
5 wk after
19 Apr
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Mar
28 Jun
4-6 wk
26 Apr
26 Jul
3 wk after
Lettuce
Lactuca sativa
28 Feb – 7 Mar
15 Jul
3-4 wk
28 Mar
5 Aug
1 wk before
31 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Feb
28 Jun
4-6 wk
28 Mar
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
7 Jun
2-4 wk
24 Mar
21 Jun
2 wk before
24 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 Mar
21 Jun
1 wk before
31 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
17 – 24 Feb
30 Jul
3-4 wk
17 Mar
20 Aug
3 wk before
17 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 May
4-6 wk
19 Jun
11 wk after
Garden tomato
Solanum lycopersicum
6 – 20 Apr
17 May
6-8 wk
1 Jun
28 Jun
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 May
5 Jul
2-4 wk
1 Jun
19 Jul
8 wk after
17 May
9 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Mar
28 Jun
4-6 wk
26 Apr
26 Jul
3 wk after
Garden pea
Pisum sativum
17 – 24 Feb
30 Jun
3-4 wk
17 Mar
21 Jul
3 wk before
31 Mar
11 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
1 – 15 May
11 Jun
4-6 wk
12 Jun
9 Jul
10 wk after
Lemon balm
Melissa officinalis
26 Jan – 9 Feb
26 May
8-10 wk
6 Apr
21 Jul
Vid frost
2 May
11 Jul
4 wk after
Dill
Anethum graveolens
31 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
10 – 24 Jan
9 Jun
6-8 wk
7 Mar
21 Jul
4 wk before
31 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
23 Dec – 20 Jan
26 May
8-12 wk
17 Mar
21 Jul
3 wk before
2 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
19 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
27 Feb – 13 Mar
11 May
8-10 wk
8 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
15 Feb – 1 Mar
16 May
8-10 wk
26 Apr
11 Jul
3 wk after
Oregano
Origanum vulgare
18 Feb – 4 Mar
30 May
6-8 wk
15 Apr
11 Jul
1 wk after
2 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
20 Jan – 3 Feb
30 May
6-8 wk
17 Mar
11 Jul
3 wk before
31 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
12 Apr
10-14 wk
8 May
21 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
15 – 22 May
18 Jun
3-4 wk
12 Jun
9 Jul
10 wk after
Cornflower
Centaurea cyanus
17 Mar
21 Jul
3 wk before
31 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
23 Mar – 6 Apr
16 May
8-10 wk
1 Jun
11 Jul
8 wk after
Sweet William
Dianthus barbatus
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
11 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
30 May
6-8 wk
1 Jun
11 Jul
8 wk after
19 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
30 Mar – 13 Apr
30 May
6-8 wk
25 May
11 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 Mar – 4 Apr
13 Jun
4-8 wk
2 May
11 Jul
4 wk after
2 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Jan
8-10 wk
17 Mar
3 wk before
19 Apr
2 wk after
Busy lizzie
Impatiens walleriana
20 Mar – 17 Apr
8 Jul
8-12 wk
12 Jun
2 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
9 Jun
6-8 wk
1 Jun
21 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
1 – 15 May
12 May
4-6 wk
12 Jun
10 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
26 Apr
8-10 wk
8 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
31 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
6 – 20 Apr
20 May
6-8 wk
1 Jun
1 Jul
8 wk after
19 Jun
21 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
13 Feb – 13 Mar
26 Apr
8-12 wk
8 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
9 Mar – 6 Apr
27 Mar
8-12 wk
1 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
20 Mar – 17 Apr
4 May
8-12 wk
12 Jun
29 Jun
10 wk after
Globe amaranth
Gomphrena globosa
17 Apr – 1 May
18 May
6-8 wk
12 Jun
29 Jun
10 wk after
Corn poppy
Papaver rhoeas
31 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
3 – 31 Jan
16 May
8-12 wk
28 Mar
11 Jul
1 wk before
11 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
3 – 17 Apr
26 May
8-10 wk
12 Jun
21 Jul
10 wk after
Sweet pea
Lathyrus odoratus
20 Jan – 10 Feb
6 Jun
5-8 wk
17 Mar
11 Jul
3 wk before
Stock
Matthiola incana
31 Jan – 14 Feb
9 Jun
6-8 wk
28 Mar
21 Jul
1 wk before
19 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
20 Jan – 3 Feb
10 May
6-8 wk
17 Mar
21 Jun
3 wk before
19 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
1 – 15 May
27 May
4-6 wk
12 Jun
24 Jun
10 wk after
Garden pansy
Viola × wittrockiana
27 Dec – 10 Jan
26 May
8-10 wk
7 Mar
21 Jul
4 wk before
11 Apr
11 Jul
1 wk after
Petunia
Petunia
9 Mar – 6 Apr
16 May
8-12 wk
1 Jun
11 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
13 – 27 Mar
10 May
6-8 wk
8 May
21 Jun
5 wk after
17 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
20 Apr – 4 May
20 Jun
4-6 wk
1 Jun
18 Jul
8 wk after
Common morning glory
Ipomoea purpurea
8 – 22 May
18 Jun
3-5 wk
12 Jun
9 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
20 Apr – 4 May
13 Jun
4-6 wk
1 Jun
11 Jul
8 wk after
17 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
27 Mar – 24 Apr
3 Jun
8-12 wk
19 Jun
29 Jul
11 wk after
Bee balm
Monarda didyma
12 Jan – 9 Feb
26 Apr
8-12 wk
6 Apr
21 Jun
Vid frost
2 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
20 Jan – 3 Feb
10 Apr
6-8 wk
17 Mar
22 May
3 wk before
19 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
17 Mar
21 Jun
3 wk before
31 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
10 – 24 Jan
30 May
6-8 wk
7 Mar
11 Jul
4 wk before
24 Mar
1 Jul
2 wk before
Bishop's flower
Ammi majus
10 – 24 Mar
13 Jun
4-6 wk
21 Apr
11 Jul
2 wk after
19 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
20 Mar – 3 Apr
9 Apr
10-12 wk
12 Jun
18 Jun
10 wk after
Sunflower
Helianthus annuus
4 – 11 May
20 Jun
3-4 wk
1 Jun
11 Jul
8 wk after
2 May
1 Jul
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
9 Jun
6-8 wk
1 Jun
21 Jul
8 wk after
17 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
9 Jun
6-8 wk
17 May
21 Jul
6 wk after
17 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Alpine delphinium
Delphinium elatum
1 Feb – 1 Mar
26 Apr
8-12 wk
26 Apr
21 Jun
3 wk after
2 May
11 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
9 Jun
6-8 wk
1 Jun
21 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
30 May
6-8 wk
8 May
11 Jul
5 wk after
17 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
4 – 18 Feb
16 Apr
8-10 wk
15 Apr
11 Jun
1 wk after
2 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
3 Apr – 1 May
28 May
6-10 wk
12 Jun
9 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
31 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
16 May
8-10 wk
1 Jun
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
20 Jan – 3 Feb
10 May
6-8 wk
17 Mar
21 Jun
3 wk before
19 Apr
11 Jun
2 wk after