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Rel. frost
Last spring frost (0°C) 1 May Frost 1 of 4 years · 20 years of data
Frost-free season 201 days 1 May – 18 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)
14 – 28 Apr
22 Jun
5-7 wk
2 Jun
27 Jul
5 wk after
25 Apr
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
4 Jul
4-6 wk
21 May
1 Aug
3 wk after
25 Apr
22 Jul
1 wk before
Chili pepper
Capsicum annuum
14 Apr – 12 May
21 Apr
8-12 wk
7 Jul
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Feb
17 Jun
5-7 wk
1 Apr
22 Jul
4 wk before
18 Apr
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
9 – 16 Jun
29 Jun
3-4 wk
7 Jul
20 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 Jun
14 Jun
4-5 wk
7 Jul
12 Jul
10 wk after
11 Jun
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
18 – 25 Jun
3-4 wk
16 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Feb – 6 Mar
7 Apr
8-12 wk
1 May
2 Jun
Vid frost
14 May
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 Apr
22 Jun
1 wk before
25 Apr
12 Jun
1 wk before
Maize
Zea mays
29 May – 5 Jun
19 Jun
3-4 wk
26 Jun
10 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
11 Jul
3-4 wk
2 Jun
1 Aug
5 wk after
14 May
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 Apr
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Feb
17 Jun
5-7 wk
1 Apr
22 Jul
4 wk before
18 Apr
12 Jul
2 wk before
Potato
Solanum tuberosum
25 Mar – 8 Apr
14 Jun
4-6 wk
6 May
12 Jul
1 wk after
6 May
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Feb
27 Jun
5-7 wk
1 Apr
1 Aug
4 wk before
25 Apr
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
9 – 16 Jun
15 Jul
3-4 wk
7 Jul
5 Aug
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
9 Jul
3-4 wk
2 Jun
30 Jul
5 wk after
14 May
20 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
29 Jun
4-6 wk
21 May
27 Jul
3 wk after
Lettuce
Lactuca sativa
25 Mar – 1 Apr
16 Jul
3-4 wk
22 Apr
6 Aug
1 wk before
25 Apr
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Mar
29 Jun
4-6 wk
22 Apr
27 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Mar – 4 Apr
8 Jun
2-4 wk
18 Apr
22 Jun
2 wk before
18 Apr
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Apr
22 Jun
1 wk before
25 Apr
12 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Mar
31 Jul
3-4 wk
11 Apr
21 Aug
3 wk before
11 Apr
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
11 wk after
Garden tomato
Solanum lycopersicum
1 – 15 May
29 May
6-8 wk
26 Jun
10 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
29 May – 12 Jun
17 Jul
2-4 wk
26 Jun
31 Jul
8 wk after
11 Jun
21 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
29 Jun
4-6 wk
21 May
27 Jul
3 wk after
Garden pea
Pisum sativum
14 – 21 Mar
1 Jul
3-4 wk
11 Apr
22 Jul
3 wk before
25 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
26 May – 9 Jun
23 Jun
4-6 wk
7 Jul
21 Jul
10 wk after
Lemon balm
Melissa officinalis
20 Feb – 6 Mar
27 May
8-10 wk
1 May
22 Jul
Vid frost
27 May
12 Jul
4 wk after
Dill
Anethum graveolens
25 Apr
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
4 – 18 Feb
10 Jun
6-8 wk
1 Apr
22 Jul
4 wk before
25 Apr
12 Jul
1 wk before
Spearmint
Mentha spicata
17 Jan – 14 Feb
27 May
8-12 wk
11 Apr
22 Jul
3 wk before
27 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
14 May
11 Aug
2 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
12 May
8-10 wk
2 Jun
7 Jul
5 wk after
Common thyme
Thymus vulgaris
12 – 26 Mar
17 May
8-10 wk
21 May
12 Jul
3 wk after
Oregano
Origanum vulgare
15 – 29 Mar
31 May
6-8 wk
10 May
12 Jul
1 wk after
27 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
14 – 28 Feb
31 May
6-8 wk
11 Apr
12 Jul
3 wk before
25 Apr
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
13 Apr
10-14 wk
2 Jun
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
9 – 16 Jun
30 Jun
3-4 wk
7 Jul
21 Jul
10 wk after
Cornflower
Centaurea cyanus
11 Apr
22 Jul
3 wk before
25 Apr
12 Jul
1 wk before
Statice
Limonium sinuatum
17 Apr – 1 May
17 May
8-10 wk
26 Jun
12 Jul
8 wk after
Sweet William
Dianthus barbatus
14 – 28 Feb
6-8 wk
11 Apr
3 wk before
6 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
1 – 15 May
31 May
6-8 wk
26 Jun
12 Jul
8 wk after
14 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
24 Apr – 8 May
31 May
6-8 wk
19 Jun
12 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 – 29 Apr
14 Jun
4-8 wk
27 May
12 Jul
4 wk after
27 May
2 Jul
4 wk after
Foxglove
Digitalis purpurea
31 Jan – 14 Feb
8-10 wk
11 Apr
3 wk before
14 May
2 wk after
Busy lizzie
Impatiens walleriana
14 Apr – 12 May
12 Jul
8-12 wk
7 Jul
6 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
1 – 15 May
10 Jun
6-8 wk
26 Jun
22 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
26 May – 9 Jun
4-6 wk
7 Jul
10 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
27 Apr
8-10 wk
2 Jun
22 Jun
5 wk after
Love in a mist
Nigella damascena
25 Apr
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
1 – 15 May
21 May
6-8 wk
26 Jun
2 Jul
8 wk after
14 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
27 Apr
8-12 wk
2 Jun
22 Jun
5 wk after
Cardoon
Cynara cardunculus
3 Apr – 1 May
8-12 wk
26 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
14 Apr – 12 May
16 May
8-12 wk
7 Jul
11 Jul
10 wk after
Globe amaranth
Gomphrena globosa
12 – 26 May
30 May
6-8 wk
7 Jul
11 Jul
10 wk after
Corn poppy
Papaver rhoeas
25 Apr
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
28 Jan – 25 Feb
17 May
8-12 wk
22 Apr
12 Jul
1 wk before
6 May
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
28 Apr – 12 May
27 May
8-10 wk
7 Jul
22 Jul
10 wk after
Sweet pea
Lathyrus odoratus
14 Feb – 7 Mar
7 Jun
5-8 wk
11 Apr
12 Jul
3 wk before
Stock
Matthiola incana
25 Feb – 11 Mar
10 Jun
6-8 wk
22 Apr
22 Jul
1 wk before
14 May
12 Jul
2 wk after
Wormwood
Artemisia absinthium
14 – 28 Feb
11 May
6-8 wk
11 Apr
22 Jun
3 wk before
14 May
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
26 May – 9 Jun
8 Jun
4-6 wk
7 Jul
10 wk after
Garden pansy
Viola × wittrockiana
21 Jan – 4 Feb
27 May
8-10 wk
1 Apr
22 Jul
4 wk before
6 May
12 Jul
1 wk after
Petunia
Petunia
3 Apr – 1 May
17 May
8-12 wk
26 Jun
12 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
11 May
6-8 wk
2 Jun
22 Jun
5 wk after
11 Jun
12 Jun
6 wk after
Common zinnia
Zinnia elegans
15 – 29 May
24 Jun
4-6 wk
26 Jun
22 Jul
8 wk after
Common morning glory
Ipomoea purpurea
2 – 16 Jun
30 Jun
3-5 wk
7 Jul
21 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
15 – 29 May
14 Jun
4-6 wk
26 Jun
12 Jul
8 wk after
11 Jun
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
21 Apr – 19 May
15 Jun
8-12 wk
14 Jul
10 Aug
11 wk after
Bee balm
Monarda didyma
6 Feb – 6 Mar
27 Apr
8-12 wk
1 May
22 Jun
Vid frost
27 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
14 – 28 Feb
11 Apr
6-8 wk
11 Apr
23 May
3 wk before
14 May
2 wk after
Safflower
Carthamus tinctorius
11 Apr
22 Jun
3 wk before
25 Apr
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
4 – 18 Feb
31 May
6-8 wk
1 Apr
12 Jul
4 wk before
18 Apr
2 Jul
2 wk before
Bishop's flower
Ammi majus
4 – 18 Apr
14 Jun
4-6 wk
16 May
12 Jul
2 wk after
14 May
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
14 – 28 Apr
10-12 wk
7 Jul
10 wk after
Sunflower
Helianthus annuus
29 May – 5 Jun
21 Jun
3-4 wk
26 Jun
12 Jul
8 wk after
27 May
2 Jul
4 wk after
China aster
Callistephus chinensis
1 – 15 May
10 Jun
6-8 wk
26 Jun
22 Jul
8 wk after
11 Jun
12 Jul
6 wk after
Annual phlox
Phlox drummondii
16 – 30 Apr
10 Jun
6-8 wk
11 Jun
22 Jul
6 wk after
11 Jun
12 Jul
6 wk after
Hollyhock
Alcea rosea
14 – 28 Feb
6-8 wk
11 Apr
3 wk before
14 May
2 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
27 Apr
8-12 wk
21 May
22 Jun
3 wk after
27 May
12 Jun
4 wk after
African marigold
Tagetes erecta
1 – 15 May
10 Jun
6-8 wk
26 Jun
22 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
31 May
6-8 wk
2 Jun
12 Jul
5 wk after
11 Jun
2 Jul
6 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
17 Apr
8-10 wk
10 May
12 Jun
1 wk after
27 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
28 Apr – 26 May
9 Jun
6-10 wk
7 Jul
21 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
25 Apr
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
17 Apr – 1 May
17 May
8-10 wk
26 Jun
12 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Feb
11 May
6-8 wk
11 Apr
22 Jun
3 wk before
14 May
12 Jun
2 wk after