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Rel. frost
Last spring frost (0°C) 28 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 163 days 28 Apr – 8 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)
11 – 25 Apr
21 Jun
5-7 wk
30 May
26 Jul
5 wk after
22 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
3 Jul
4-6 wk
18 May
31 Jul
3 wk after
22 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
31 Mar – 28 Apr
17 Apr
8-12 wk
23 Jun
8 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Feb
16 Jun
5-7 wk
29 Mar
21 Jul
4 wk before
15 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
6 – 13 Jun
11 Jun
3-4 wk
4 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
30 May – 6 Jun
11 Jun
4-5 wk
4 Jul
9 Jul
10 wk after
8 Jun
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
10 – 17 Jun
3-4 wk
8 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
3 Feb – 3 Mar
6 Apr
8-12 wk
28 Apr
1 Jun
Vid frost
11 May
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Apr
21 Jun
1 wk before
22 Apr
11 Jun
1 wk before
Maize
Zea mays
26 May – 2 Jun
1 Jun
3-4 wk
23 Jun
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
10 Jul
3-4 wk
30 May
31 Jul
5 wk after
11 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Feb
16 Jun
5-7 wk
29 Mar
21 Jul
4 wk before
15 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
22 Mar – 5 Apr
10 Jun
4-6 wk
3 May
8 Jul
1 wk after
3 May
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Feb
26 Jun
5-7 wk
29 Mar
31 Jul
4 wk before
22 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
6 – 13 Jun
28 Jun
3-4 wk
4 Jul
19 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
27 Jun
3-4 wk
30 May
18 Jul
5 wk after
11 May
8 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
28 Jun
4-6 wk
18 May
26 Jul
3 wk after
Lettuce
Lactuca sativa
22 – 29 Mar
15 Jul
3-4 wk
19 Apr
5 Aug
1 wk before
22 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Mar
28 Jun
4-6 wk
19 Apr
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Mar – 1 Apr
7 Jun
2-4 wk
15 Apr
21 Jun
2 wk before
15 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Apr
21 Jun
1 wk before
22 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
11 – 18 Mar
30 Jul
3-4 wk
8 Apr
20 Aug
3 wk before
8 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
11 wk after
Garden tomato
Solanum lycopersicum
28 Apr – 12 May
11 May
6-8 wk
23 Jun
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
26 May – 9 Jun
30 Jun
2-4 wk
23 Jun
14 Jul
8 wk after
8 Jun
4 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
28 Jun
4-6 wk
18 May
26 Jul
3 wk after
Garden pea
Pisum sativum
11 – 18 Mar
30 Jun
3-4 wk
8 Apr
21 Jul
3 wk before
22 Apr
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
23 May – 6 Jun
6 Jun
4-6 wk
4 Jul
4 Jul
10 wk after
Lemon balm
Melissa officinalis
17 Feb – 3 Mar
26 May
8-10 wk
28 Apr
21 Jul
Vid frost
24 May
11 Jul
4 wk after
Dill
Anethum graveolens
22 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
1 – 15 Feb
9 Jun
6-8 wk
29 Mar
21 Jul
4 wk before
22 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
14 Jan – 11 Feb
26 May
8-12 wk
8 Apr
21 Jul
3 wk before
24 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
11 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
11 May
8-10 wk
30 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
9 – 23 Mar
16 May
8-10 wk
18 May
11 Jul
3 wk after
Oregano
Origanum vulgare
12 – 26 Mar
30 May
6-8 wk
7 May
11 Jul
1 wk after
24 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
11 – 25 Feb
30 May
6-8 wk
8 Apr
11 Jul
3 wk before
22 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
10 Apr
10-14 wk
30 May
19 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
6 – 13 Jun
13 Jun
3-4 wk
4 Jul
4 Jul
10 wk after
Cornflower
Centaurea cyanus
8 Apr
21 Jul
3 wk before
22 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
14 – 28 Apr
11 May
8-10 wk
23 Jun
6 Jul
8 wk after
Sweet William
Dianthus barbatus
11 – 25 Feb
6-8 wk
8 Apr
3 wk before
3 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
28 Apr – 12 May
25 May
6-8 wk
23 Jun
6 Jul
8 wk after
11 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
21 Apr – 5 May
27 May
6-8 wk
16 Jun
8 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
29 Mar – 26 Apr
10 Jun
4-8 wk
24 May
8 Jul
4 wk after
24 May
28 Jun
4 wk after
Foxglove
Digitalis purpurea
28 Jan – 11 Feb
8-10 wk
8 Apr
3 wk before
11 May
2 wk after
Busy lizzie
Impatiens walleriana
11 Apr – 9 May
2 Jul
8-12 wk
4 Jul
27 Aug
10 wk after
Creeping zinnia
Sanvitalia procumbens
28 Apr – 12 May
4 Jun
6-8 wk
23 Jun
16 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
12 – 26 May
15 May
4-6 wk
23 Jun
8 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
26 Apr
8-10 wk
30 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
22 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
28 Apr – 12 May
15 May
6-8 wk
23 Jun
26 Jun
8 wk after
11 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
26 Apr
8-12 wk
30 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
31 Mar – 28 Apr
8-12 wk
23 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
11 Apr – 9 May
29 Apr
8-12 wk
4 Jul
10 wk after
Globe amaranth
Gomphrena globosa
9 – 23 May
13 May
6-8 wk
4 Jul
10 wk after
Corn poppy
Papaver rhoeas
22 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Jan – 22 Feb
16 May
8-12 wk
19 Apr
11 Jul
1 wk before
3 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
25 Apr – 9 May
21 May
8-10 wk
4 Jul
16 Jul
10 wk after
Sweet pea
Lathyrus odoratus
11 Feb – 4 Mar
6 Jun
5-8 wk
8 Apr
11 Jul
3 wk before
Stock
Matthiola incana
22 Feb – 8 Mar
9 Jun
6-8 wk
19 Apr
21 Jul
1 wk before
11 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
11 – 25 Feb
10 May
6-8 wk
8 Apr
21 Jun
3 wk before
11 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
23 May – 6 Jun
4-6 wk
4 Jul
10 wk after
Garden pansy
Viola × wittrockiana
18 Jan – 1 Feb
26 May
8-10 wk
29 Mar
21 Jul
4 wk before
3 May
11 Jul
1 wk after
Petunia
Petunia
31 Mar – 28 Apr
11 May
8-12 wk
23 Jun
6 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
10 May
6-8 wk
30 May
21 Jun
5 wk after
8 Jun
11 Jun
6 wk after
Common zinnia
Zinnia elegans
12 – 26 May
14 Jun
4-6 wk
23 Jun
12 Jul
8 wk after
Common morning glory
Ipomoea purpurea
30 May – 13 Jun
13 Jun
3-5 wk
4 Jul
4 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
12 – 26 May
10 Jun
4-6 wk
23 Jun
8 Jul
8 wk after
8 Jun
28 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
18 Apr – 16 May
29 May
8-12 wk
11 Jul
24 Jul
11 wk after
Bee balm
Monarda didyma
3 Feb – 3 Mar
26 Apr
8-12 wk
28 Apr
21 Jun
Vid frost
24 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
11 – 25 Feb
10 Apr
6-8 wk
8 Apr
22 May
3 wk before
11 May
12 May
2 wk after
Safflower
Carthamus tinctorius
8 Apr
21 Jun
3 wk before
22 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
1 – 15 Feb
30 May
6-8 wk
29 Mar
11 Jul
4 wk before
15 Apr
1 Jul
2 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
13 Jun
4-6 wk
13 May
11 Jul
2 wk after
11 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
11 – 25 Apr
10-12 wk
4 Jul
10 wk after
Sunflower
Helianthus annuus
26 May – 2 Jun
18 Jun
3-4 wk
23 Jun
9 Jul
8 wk after
24 May
29 Jun
4 wk after
China aster
Callistephus chinensis
28 Apr – 12 May
7 Jun
6-8 wk
23 Jun
19 Jul
8 wk after
8 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
13 – 27 Apr
4 Jun
6-8 wk
8 Jun
16 Jul
6 wk after
8 Jun
6 Jul
6 wk after
Hollyhock
Alcea rosea
11 – 25 Feb
6-8 wk
8 Apr
3 wk before
11 May
2 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
26 Apr
8-12 wk
18 May
21 Jun
3 wk after
24 May
11 Jun
4 wk after
African marigold
Tagetes erecta
28 Apr – 12 May
4 Jun
6-8 wk
23 Jun
16 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
28 May
6-8 wk
30 May
9 Jul
5 wk after
8 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
16 Apr
8-10 wk
7 May
11 Jun
1 wk after
24 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
25 Apr – 23 May
23 May
6-10 wk
4 Jul
4 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
22 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
14 – 28 Apr
14 May
8-10 wk
23 Jun
9 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Feb
10 May
6-8 wk
8 Apr
21 Jun
3 wk before
11 May
11 Jun
2 wk after