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Rel. frost
Last spring frost (0°C) 23 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 171 days 23 Apr – 11 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)
5 – 19 Mar
19 Jun
5-7 wk
23 Apr
24 Jul
0 wk
16 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Mar
1 Jul
4-6 wk
23 Apr
29 Jul
0 wk
16 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
6 Mar – 3 Apr
30 Mar
8-12 wk
29 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Mar
14 Jun
5-7 wk
23 Apr
19 Jul
0 wk
11 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
1 – 8 May
10 Jun
3-4 wk
29 May
1 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
24 Apr – 1 May
11 Jun
4-5 wk
29 May
9 Jul
5 wk after
29 May
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
8 – 15 May
3 Jun
3-4 wk
5 Jun
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
29 Jan – 26 Feb
4 Apr
8-12 wk
23 Apr
30 May
0 wk
3 May
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 Apr
19 Jun
1 wk before
16 Apr
9 Jun
1 wk before
Maize
Zea mays
14 – 21 Apr
31 May
3-4 wk
12 May
21 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 Apr
8 Jul
3-4 wk
29 Apr
29 Jul
1 wk after
3 May
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 Apr
9 Jul
0 wk
11 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Mar
14 Jun
5-7 wk
23 Apr
19 Jul
0 wk
11 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
17 – 31 Mar
9 Jun
4-6 wk
28 Apr
7 Jul
1 wk after
28 Apr
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Mar
24 Jun
5-7 wk
23 Apr
29 Jul
0 wk
16 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
1 – 8 May
24 Jun
3-4 wk
29 May
15 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 Apr
22 Jun
3-4 wk
29 Apr
13 Jul
1 wk after
3 May
3 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Mar
26 Jun
4-6 wk
23 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
26 Mar – 2 Apr
13 Jul
3-4 wk
23 Apr
3 Aug
0 wk
16 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Mar
26 Jun
4-6 wk
23 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Mar
5 Jun
2-4 wk
11 Apr
19 Jun
2 wk before
11 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 Apr
19 Jun
1 wk before
16 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
26 Mar – 2 Apr
28 Jul
3-4 wk
23 Apr
18 Aug
0 wk
5 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
20 May – 3 Jun
4-6 wk
1 Jul
10 wk after
Garden tomato
Solanum lycopersicum
17 – 31 Mar
10 May
6-8 wk
12 May
21 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 Apr
26 Jun
2-4 wk
12 May
10 Jul
3 wk after
29 May
30 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Mar
26 Jun
4-6 wk
23 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
26 Mar – 2 Apr
28 Jun
3-4 wk
23 Apr
19 Jul
0 wk
16 Apr
9 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
17 Apr – 1 May
2 Jun
4-6 wk
29 May
30 Jun
5 wk after
Lemon balm
Melissa officinalis
12 – 26 Feb
24 May
8-10 wk
23 Apr
19 Jul
0 wk
14 May
9 Jul
3 wk after
Dill
Anethum graveolens
16 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
26 Feb – 12 Mar
7 Jun
6-8 wk
23 Apr
19 Jul
0 wk
16 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
29 Jan – 26 Feb
24 May
8-12 wk
23 Apr
19 Jul
0 wk
14 May
9 Jul
3 wk after
Coriander
Coriandrum sativum
23 Apr
18 Aug
0 wk
3 May
8 Aug
1 wk after
Garden sage
Salvia officinalis
18 Feb – 4 Mar
9 May
8-10 wk
29 Apr
4 Jul
1 wk after
Common thyme
Thymus vulgaris
12 – 26 Feb
14 May
8-10 wk
23 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
26 Feb – 12 Mar
28 May
6-8 wk
23 Apr
9 Jul
0 wk
14 May
29 Jun
3 wk after
Parsley
Petroselinum crispum
26 Feb – 12 Mar
28 May
6-8 wk
23 Apr
9 Jul
0 wk
16 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
21 Jan – 18 Feb
10 Apr
10-14 wk
29 Apr
19 Jun
1 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
1 – 8 May
9 Jun
3-4 wk
29 May
30 Jun
5 wk after
Cornflower
Centaurea cyanus
23 Apr
19 Jul
0 wk
16 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Mar
12 May
8-10 wk
12 May
7 Jul
3 wk after
Sweet William
Dianthus barbatus
26 Feb – 12 Mar
6-8 wk
23 Apr
0 wk
28 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 – 31 Mar
26 May
6-8 wk
12 May
7 Jul
3 wk after
1 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Mar
28 May
6-8 wk
7 May
9 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
19 Mar – 16 Apr
11 Jun
4-8 wk
14 May
9 Jul
3 wk after
14 May
29 Jun
3 wk after
Foxglove
Digitalis purpurea
12 – 26 Feb
8-10 wk
23 Apr
0 wk
3 May
1 wk after
Busy lizzie
Impatiens walleriana
6 Mar – 3 Apr
4 Jul
8-12 wk
29 May
29 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
17 – 31 Mar
5 Jun
6-8 wk
12 May
17 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
17 Apr – 1 May
3 May
4-6 wk
29 May
31 May
5 wk after
Chinese lantern
Physalis alkekengi
18 Feb – 4 Mar
24 Apr
8-10 wk
29 Apr
19 Jun
1 wk after
Love in a mist
Nigella damascena
23 Apr
4 Jul
0 wk
16 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 – 31 Mar
16 May
6-8 wk
12 May
27 Jun
3 wk after
1 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
4 Feb – 4 Mar
24 Apr
8-12 wk
29 Apr
19 Jun
1 wk after
Cardoon
Cynara cardunculus
17 Feb – 17 Mar
25 Mar
8-12 wk
12 May
20 May
3 wk after
Regal-foxtail
Ptilotus nobilis
6 Mar – 3 Apr
25 Apr
8-12 wk
29 May
20 Jun
5 wk after
Globe amaranth
Gomphrena globosa
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
5 wk after
Corn poppy
Papaver rhoeas
23 Apr
19 Jul
0 wk
16 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
29 Jan – 26 Feb
14 May
8-12 wk
23 Apr
9 Jul
0 wk
28 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
20 Mar – 3 Apr
22 May
8-10 wk
29 May
17 Jul
5 wk after
Sweet pea
Lathyrus odoratus
26 Feb – 19 Mar
4 Jun
5-8 wk
23 Apr
9 Jul
0 wk
Stock
Matthiola incana
26 Feb – 12 Mar
7 Jun
6-8 wk
23 Apr
19 Jul
0 wk
3 May
9 Jul
1 wk after
Wormwood
Artemisia absinthium
26 Feb – 12 Mar
8 May
6-8 wk
23 Apr
19 Jun
0 wk
3 May
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
17 Apr – 1 May
18 May
4-6 wk
29 May
15 Jun
5 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Feb
24 May
8-10 wk
23 Apr
19 Jul
0 wk
28 Apr
9 Jul
1 wk after
Petunia
Petunia
17 Feb – 17 Mar
12 May
8-12 wk
12 May
7 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Mar
8 May
6-8 wk
29 Apr
19 Jun
1 wk after
29 May
9 Jun
5 wk after
Common zinnia
Zinnia elegans
31 Mar – 14 Apr
16 Jun
4-6 wk
12 May
14 Jul
3 wk after
Common morning glory
Ipomoea purpurea
24 Apr – 8 May
9 Jun
3-5 wk
29 May
30 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
31 Mar – 14 Apr
11 Jun
4-6 wk
12 May
9 Jul
3 wk after
29 May
29 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
18 Mar – 15 Apr
25 May
8-12 wk
10 Jun
20 Jul
7 wk after
Bee balm
Monarda didyma
29 Jan – 26 Feb
24 Apr
8-12 wk
23 Apr
19 Jun
0 wk
14 May
9 Jun
3 wk after
Yarrow
Achillea millefolium
26 Feb – 12 Mar
8 Apr
6-8 wk
23 Apr
20 May
0 wk
3 May
10 May
1 wk after
Safflower
Carthamus tinctorius
23 Apr
19 Jun
0 wk
16 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
26 Feb – 12 Mar
28 May
6-8 wk
23 Apr
9 Jul
0 wk
15 Mar
29 Jun
6 wk before
Bishop's flower
Ammi majus
12 – 26 Mar
11 Jun
4-6 wk
23 Apr
9 Jul
0 wk
3 May
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
6 – 20 Mar
5 Apr
10-12 wk
29 May
14 Jun
5 wk after
Sunflower
Helianthus annuus
14 – 21 Apr
18 Jun
3-4 wk
12 May
9 Jul
3 wk after
14 May
29 Jun
3 wk after
China aster
Callistephus chinensis
17 – 31 Mar
7 Jun
6-8 wk
12 May
19 Jul
3 wk after
29 May
9 Jul
5 wk after
Annual phlox
Phlox drummondii
9 – 23 Mar
5 Jun
6-8 wk
4 May
17 Jul
2 wk after
29 May
7 Jul
5 wk after
Hollyhock
Alcea rosea
26 Feb – 12 Mar
6-8 wk
23 Apr
0 wk
3 May
1 wk after
Alpine delphinium
Delphinium elatum
29 Jan – 26 Feb
24 Apr
8-12 wk
23 Apr
19 Jun
0 wk
14 May
9 Jun
3 wk after
African marigold
Tagetes erecta
17 – 31 Mar
5 Jun
6-8 wk
12 May
17 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Mar
28 May
6-8 wk
29 Apr
9 Jul
1 wk after
29 May
29 Jun
5 wk after
Wood sage
Salvia nemorosa
12 – 26 Feb
14 Apr
8-10 wk
23 Apr
9 Jun
0 wk
14 May
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
20 Mar – 17 Apr
19 May
6-10 wk
29 May
30 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
23 Apr
19 Jul
0 wk
16 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Mar
14 May
8-10 wk
12 May
9 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
26 Feb – 12 Mar
8 May
6-8 wk
23 Apr
19 Jun
0 wk
3 May
9 Jun
1 wk after