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Rel. frost
Last spring frost (0°C) 18 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 224 days 18 Apr – 28 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)
1 – 15 Apr
22 Jun
5-7 wk
20 May
27 Jul
5 wk after
12 Apr
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
27 Mar – 10 Apr
4 Jul
4-6 wk
8 May
1 Aug
3 wk after
12 Apr
22 Jul
1 wk before
Chili pepper
Capsicum annuum
1 – 29 Apr
21 Apr
8-12 wk
24 Jun
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Jan – 12 Feb
17 Jun
5-7 wk
19 Mar
22 Jul
4 wk before
5 Apr
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
27 May – 3 Jun
1 Jul
3-4 wk
24 Jun
22 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 May
14 Jun
4-5 wk
24 Jun
12 Jul
10 wk after
29 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
5 – 12 Jun
3-4 wk
3 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
24 Jan – 21 Feb
7 Apr
8-12 wk
18 Apr
2 Jun
Vid frost
1 May
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 Apr
22 Jun
1 wk before
12 Apr
12 Jun
1 wk before
Maize
Zea mays
16 – 23 May
21 Jun
3-4 wk
13 Jun
12 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
11 Jul
3-4 wk
20 May
1 Aug
5 wk after
1 May
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 Apr
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Jan – 12 Feb
17 Jun
5-7 wk
19 Mar
22 Jul
4 wk before
5 Apr
12 Jul
2 wk before
Potato
Solanum tuberosum
12 – 26 Mar
14 Jun
4-6 wk
23 Apr
12 Jul
1 wk after
23 Apr
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Jan – 12 Feb
27 Jun
5-7 wk
19 Mar
1 Aug
4 wk before
12 Apr
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
27 May – 3 Jun
16 Jul
3-4 wk
24 Jun
6 Aug
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
9 Jul
3-4 wk
20 May
30 Jul
5 wk after
1 May
20 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Mar – 10 Apr
29 Jun
4-6 wk
8 May
27 Jul
3 wk after
Lettuce
Lactuca sativa
12 – 19 Mar
16 Jul
3-4 wk
9 Apr
6 Aug
1 wk before
12 Apr
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Feb – 12 Mar
29 Jun
4-6 wk
9 Apr
27 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Mar
8 Jun
2-4 wk
5 Apr
22 Jun
2 wk before
5 Apr
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 Apr
22 Jun
1 wk before
12 Apr
12 Jun
1 wk before
Spinach
Spinacia oleracea
1 – 8 Mar
31 Jul
3-4 wk
29 Mar
21 Aug
3 wk before
29 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
20 May – 3 Jun
4-6 wk
1 Jul
11 wk after
Garden tomato
Solanum lycopersicum
18 Apr – 2 May
31 May
6-8 wk
13 Jun
12 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
16 – 30 May
18 Jul
2-4 wk
13 Jun
1 Aug
8 wk after
29 May
22 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Mar – 10 Apr
29 Jun
4-6 wk
8 May
27 Jul
3 wk after
Garden pea
Pisum sativum
1 – 8 Mar
1 Jul
3-4 wk
29 Mar
22 Jul
3 wk before
12 Apr
12 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
13 – 27 May
24 Jun
4-6 wk
24 Jun
22 Jul
10 wk after
Lemon balm
Melissa officinalis
7 – 21 Feb
27 May
8-10 wk
18 Apr
22 Jul
Vid frost
14 May
12 Jul
4 wk after
Dill
Anethum graveolens
12 Apr
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
22 Jan – 5 Feb
10 Jun
6-8 wk
19 Mar
22 Jul
4 wk before
12 Apr
12 Jul
1 wk before
Spearmint
Mentha spicata
4 Jan – 1 Feb
27 May
8-12 wk
29 Mar
22 Jul
3 wk before
14 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
1 May
11 Aug
2 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
12 May
8-10 wk
20 May
7 Jul
5 wk after
Common thyme
Thymus vulgaris
27 Feb – 13 Mar
17 May
8-10 wk
8 May
12 Jul
3 wk after
Oregano
Origanum vulgare
2 – 16 Mar
31 May
6-8 wk
27 Apr
12 Jul
1 wk after
14 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
1 – 15 Feb
31 May
6-8 wk
29 Mar
12 Jul
3 wk before
12 Apr
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
13 Apr
10-14 wk
20 May
22 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
27 May – 3 Jun
1 Jul
3-4 wk
24 Jun
22 Jul
10 wk after
Cornflower
Centaurea cyanus
29 Mar
22 Jul
3 wk before
12 Apr
12 Jul
1 wk before
Statice
Limonium sinuatum
4 – 18 Apr
17 May
8-10 wk
13 Jun
12 Jul
8 wk after
Sweet William
Dianthus barbatus
1 – 15 Feb
6-8 wk
29 Mar
3 wk before
23 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
18 Apr – 2 May
31 May
6-8 wk
13 Jun
12 Jul
8 wk after
1 Jul
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
31 May
6-8 wk
6 Jun
12 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
19 Mar – 16 Apr
14 Jun
4-8 wk
14 May
12 Jul
4 wk after
14 May
2 Jul
4 wk after
Foxglove
Digitalis purpurea
18 Jan – 1 Feb
8-10 wk
29 Mar
3 wk before
1 May
2 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
12 Jul
8-12 wk
24 Jun
6 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
18 Apr – 2 May
10 Jun
6-8 wk
13 Jun
22 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
13 – 27 May
25 May
4-6 wk
24 Jun
10 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
27 Apr
8-10 wk
20 May
22 Jun
5 wk after
Love in a mist
Nigella damascena
12 Apr
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
18 Apr – 2 May
21 May
6-8 wk
13 Jun
2 Jul
8 wk after
1 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
27 Apr
8-12 wk
20 May
22 Jun
5 wk after
Cardoon
Cynara cardunculus
21 Mar – 18 Apr
28 Mar
8-12 wk
13 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
1 – 29 Apr
17 May
8-12 wk
24 Jun
12 Jul
10 wk after
Globe amaranth
Gomphrena globosa
29 Apr – 13 May
31 May
6-8 wk
24 Jun
12 Jul
10 wk after
Corn poppy
Papaver rhoeas
12 Apr
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
15 Jan – 12 Feb
17 May
8-12 wk
9 Apr
12 Jul
1 wk before
23 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
15 – 29 Apr
27 May
8-10 wk
24 Jun
22 Jul
10 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Feb
7 Jun
5-8 wk
29 Mar
12 Jul
3 wk before
Stock
Matthiola incana
12 – 26 Feb
10 Jun
6-8 wk
9 Apr
22 Jul
1 wk before
1 May
12 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Feb
11 May
6-8 wk
29 Mar
22 Jun
3 wk before
1 May
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
13 – 27 May
9 Jun
4-6 wk
24 Jun
7 Jul
10 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Jan
27 May
8-10 wk
19 Mar
22 Jul
4 wk before
23 Apr
12 Jul
1 wk after
Petunia
Petunia
21 Mar – 18 Apr
17 May
8-12 wk
13 Jun
12 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
11 May
6-8 wk
20 May
22 Jun
5 wk after
29 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
2 – 16 May
24 Jun
4-6 wk
13 Jun
22 Jul
8 wk after
Common morning glory
Ipomoea purpurea
20 May – 3 Jun
1 Jul
3-5 wk
24 Jun
22 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 May
14 Jun
4-6 wk
13 Jun
12 Jul
8 wk after
29 May
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
8 Apr – 6 May
16 Jun
8-12 wk
1 Jul
11 Aug
11 wk after
Bee balm
Monarda didyma
24 Jan – 21 Feb
27 Apr
8-12 wk
18 Apr
22 Jun
Vid frost
14 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Feb
11 Apr
6-8 wk
29 Mar
23 May
3 wk before
1 May
13 May
2 wk after
Safflower
Carthamus tinctorius
29 Mar
22 Jun
3 wk before
12 Apr
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
22 Jan – 5 Feb
31 May
6-8 wk
19 Mar
12 Jul
4 wk before
5 Apr
2 Jul
2 wk before
Bishop's flower
Ammi majus
22 Mar – 5 Apr
14 Jun
4-6 wk
3 May
12 Jul
2 wk after
1 May
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
1 – 15 Apr
13 Apr
10-12 wk
24 Jun
10 wk after
Sunflower
Helianthus annuus
16 – 23 May
21 Jun
3-4 wk
13 Jun
12 Jul
8 wk after
14 May
2 Jul
4 wk after
China aster
Callistephus chinensis
18 Apr – 2 May
10 Jun
6-8 wk
13 Jun
22 Jul
8 wk after
29 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
3 – 17 Apr
10 Jun
6-8 wk
29 May
22 Jul
6 wk after
29 May
12 Jul
6 wk after
Hollyhock
Alcea rosea
1 – 15 Feb
6-8 wk
29 Mar
3 wk before
1 May
2 wk after
Alpine delphinium
Delphinium elatum
13 Feb – 13 Mar
27 Apr
8-12 wk
8 May
22 Jun
3 wk after
14 May
12 Jun
4 wk after
African marigold
Tagetes erecta
18 Apr – 2 May
10 Jun
6-8 wk
13 Jun
22 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
31 May
6-8 wk
20 May
12 Jul
5 wk after
29 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
16 Feb – 2 Mar
17 Apr
8-10 wk
27 Apr
12 Jun
1 wk after
14 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
15 Apr – 13 May
10 Jun
6-10 wk
24 Jun
22 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
12 Apr
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
4 – 18 Apr
17 May
8-10 wk
13 Jun
12 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Feb
11 May
6-8 wk
29 Mar
22 Jun
3 wk before
1 May
12 Jun
2 wk after