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Rel. frost
Last spring frost (0°C) 13 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 188 days 13 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)
24 Mar – 7 Apr
18 Jun
5-7 wk
12 May
23 Jul
4 wk after
6 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Mar
30 Jun
4-6 wk
27 Apr
28 Jul
2 wk after
6 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
7 Mar – 4 Apr
17 Apr
8-12 wk
30 May
12 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Jan – 12 Feb
13 Jun
5-7 wk
19 Mar
18 Jul
4 wk before
1 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
10 – 17 May
11 Jun
3-4 wk
7 Jun
2 Jul
8 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 May
10 Jun
4-5 wk
7 Jun
8 Jul
8 wk after
19 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
15 – 22 May
22 May
3-4 wk
12 Jun
12 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Jan – 16 Feb
3 Apr
8-12 wk
13 Apr
29 May
Vid frost
23 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 Apr
18 Jun
1 wk before
6 Apr
8 Jun
1 wk before
Maize
Zea mays
2 – 9 May
1 Jun
3-4 wk
30 May
22 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
7 Jul
3-4 wk
12 May
28 Jul
4 wk after
23 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Jan – 12 Feb
13 Jun
5-7 wk
19 Mar
18 Jul
4 wk before
1 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
7 – 21 Mar
9 Jun
4-6 wk
18 Apr
7 Jul
1 wk after
18 Apr
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Jan – 12 Feb
23 Jun
5-7 wk
19 Mar
28 Jul
4 wk before
6 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
10 – 17 May
26 Jun
3-4 wk
7 Jun
17 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
20 Jun
3-4 wk
12 May
11 Jul
4 wk after
23 Apr
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Mar
25 Jun
4-6 wk
27 Apr
23 Jul
2 wk after
Lettuce
Lactuca sativa
9 – 16 Mar
12 Jul
3-4 wk
6 Apr
2 Aug
1 wk before
6 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Feb – 9 Mar
25 Jun
4-6 wk
6 Apr
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Mar
4 Jun
2-4 wk
1 Apr
18 Jun
2 wk before
1 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 Apr
18 Jun
1 wk before
6 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
1 – 8 Mar
27 Jul
3-4 wk
29 Mar
17 Aug
2 wk before
26 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
10 – 24 May
4-6 wk
21 Jun
10 wk after
Garden tomato
Solanum lycopersicum
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
28 Jun
2-4 wk
30 May
12 Jul
7 wk after
19 May
2 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Mar
25 Jun
4-6 wk
27 Apr
23 Jul
2 wk after
Garden pea
Pisum sativum
1 – 8 Mar
27 Jun
3-4 wk
29 Mar
18 Jul
2 wk before
6 Apr
8 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
26 Apr – 10 May
4 Jun
4-6 wk
7 Jun
2 Jul
8 wk after
Lemon balm
Melissa officinalis
2 – 16 Feb
23 May
8-10 wk
13 Apr
18 Jul
Vid frost
4 May
8 Jul
3 wk after
Dill
Anethum graveolens
6 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Jan – 5 Feb
6 Jun
6-8 wk
19 Mar
18 Jul
4 wk before
6 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
4 Jan – 1 Feb
23 May
8-12 wk
29 Mar
18 Jul
2 wk before
4 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
23 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
8 May
8-10 wk
12 May
3 Jul
4 wk after
Common thyme
Thymus vulgaris
16 Feb – 2 Mar
13 May
8-10 wk
27 Apr
8 Jul
2 wk after
Oregano
Origanum vulgare
22 Feb – 8 Mar
27 May
6-8 wk
19 Apr
8 Jul
1 wk after
4 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
1 – 15 Feb
27 May
6-8 wk
29 Mar
8 Jul
2 wk before
6 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
9 Apr
10-14 wk
12 May
18 Jun
4 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
10 – 17 May
11 Jun
3-4 wk
7 Jun
2 Jul
8 wk after
Cornflower
Centaurea cyanus
29 Mar
18 Jul
2 wk before
6 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
21 Mar – 4 Apr
13 May
8-10 wk
30 May
8 Jul
7 wk after
Sweet William
Dianthus barbatus
1 – 15 Feb
6-8 wk
29 Mar
2 wk before
18 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
27 May
6-8 wk
30 May
8 Jul
7 wk after
21 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
9 Mar – 6 Apr
10 Jun
4-8 wk
4 May
8 Jul
3 wk after
4 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
18 Jan – 1 Feb
8-10 wk
29 Mar
2 wk before
23 Apr
1 wk after
Busy lizzie
Impatiens walleriana
15 Mar – 12 Apr
4 Jul
8-12 wk
7 Jun
29 Aug
8 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
6 Jun
6-8 wk
30 May
18 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
18 Apr – 2 May
17 May
4-6 wk
30 May
14 Jun
7 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
23 Apr
8-10 wk
12 May
18 Jun
4 wk after
Love in a mist
Nigella damascena
6 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
17 May
6-8 wk
30 May
28 Jun
7 wk after
21 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
23 Apr
8-12 wk
12 May
18 Jun
4 wk after
Cardoon
Cynara cardunculus
7 Mar – 4 Apr
24 Mar
8-12 wk
30 May
7 wk after
Regal-foxtail
Ptilotus nobilis
15 Mar – 12 Apr
27 Apr
8-12 wk
7 Jun
22 Jun
8 wk after
Globe amaranth
Gomphrena globosa
12 – 26 Apr
11 May
6-8 wk
7 Jun
22 Jun
8 wk after
Corn poppy
Papaver rhoeas
6 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Jan – 9 Feb
13 May
8-12 wk
6 Apr
8 Jul
1 wk before
18 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
29 Mar – 12 Apr
23 May
8-10 wk
7 Jun
18 Jul
8 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Feb
3 Jun
5-8 wk
29 Mar
8 Jul
2 wk before
Stock
Matthiola incana
9 – 23 Feb
6 Jun
6-8 wk
6 Apr
18 Jul
1 wk before
23 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
1 – 15 Feb
7 May
6-8 wk
29 Mar
18 Jun
2 wk before
23 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
26 Apr – 10 May
20 May
4-6 wk
7 Jun
17 Jun
8 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Jan
23 May
8-10 wk
19 Mar
18 Jul
4 wk before
18 Apr
8 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
13 May
8-12 wk
30 May
8 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
7 May
6-8 wk
12 May
18 Jun
4 wk after
19 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
16 Jun
4-6 wk
30 May
14 Jul
7 wk after
Common morning glory
Ipomoea purpurea
3 – 17 May
11 Jun
3-5 wk
7 Jun
2 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
10 Jun
4-6 wk
30 May
8 Jul
7 wk after
19 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
19 Mar – 16 Apr
27 May
8-12 wk
11 Jun
22 Jul
8 wk after
Bee balm
Monarda didyma
19 Jan – 16 Feb
23 Apr
8-12 wk
13 Apr
18 Jun
Vid frost
4 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
1 – 15 Feb
7 Apr
6-8 wk
29 Mar
19 May
2 wk before
23 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
29 Mar
18 Jun
2 wk before
6 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
22 Jan – 5 Feb
27 May
6-8 wk
19 Mar
8 Jul
4 wk before
1 Apr
28 Jun
2 wk before
Bishop's flower
Ammi majus
12 – 26 Mar
10 Jun
4-6 wk
23 Apr
8 Jul
1 wk after
23 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
15 – 29 Mar
5 Apr
10-12 wk
7 Jun
14 Jun
8 wk after
Sunflower
Helianthus annuus
2 – 9 May
17 Jun
3-4 wk
30 May
8 Jul
7 wk after
4 May
28 Jun
3 wk after
China aster
Callistephus chinensis
4 – 18 Apr
6 Jun
6-8 wk
30 May
18 Jul
7 wk after
19 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
23 Mar – 6 Apr
6 Jun
6-8 wk
18 May
18 Jul
5 wk after
19 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
1 – 15 Feb
6-8 wk
29 Mar
2 wk before
23 Apr
1 wk after
Alpine delphinium
Delphinium elatum
2 Feb – 2 Mar
23 Apr
8-12 wk
27 Apr
18 Jun
2 wk after
4 May
8 Jun
3 wk after
African marigold
Tagetes erecta
4 – 18 Apr
6 Jun
6-8 wk
30 May
18 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
27 May
6-8 wk
12 May
8 Jul
4 wk after
19 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
8 – 22 Feb
13 Apr
8-10 wk
19 Apr
8 Jun
1 wk after
4 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
29 Mar – 26 Apr
21 May
6-10 wk
7 Jun
2 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
6 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
13 May
8-10 wk
30 May
8 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Feb
7 May
6-8 wk
29 Mar
18 Jun
2 wk before
23 Apr
8 Jun
1 wk after