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Rel. frost
Last spring frost (0°C) 29 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 207 days 29 Apr – 22 Nov
Probability that frost is over

90% = 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 Mar
21 Jun
5-7 wk
29 Apr
26 Jul
0 wk
23 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Mar – 1 Apr
3 Jul
4-6 wk
29 Apr
31 Jul
0 wk
23 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
3 – 31 Mar
30 Mar
8-12 wk
26 May
4 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Mar
16 Jun
5-7 wk
29 Apr
21 Jul
0 wk
16 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
12 – 19 May
24 May
3-4 wk
9 Jun
14 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 May
13 Jun
4-5 wk
9 Jun
11 Jul
6 wk after
9 Jun
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
7 – 14 Jun
3-4 wk
5 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Feb – 4 Mar
6 Apr
8-12 wk
29 Apr
1 Jun
0 wk
12 May
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 Apr
21 Jun
1 wk before
23 Apr
11 Jun
1 wk before
Maize
Zea mays
28 Apr – 5 May
14 May
3-4 wk
26 May
4 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 Apr
10 Jul
3-4 wk
29 Apr
31 Jul
0 wk
12 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 Apr
11 Jul
0 wk
16 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Mar
16 Jun
5-7 wk
29 Apr
21 Jul
0 wk
16 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
23 Mar – 6 Apr
13 Jun
4-6 wk
4 May
11 Jul
1 wk after
4 May
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Mar
26 Jun
5-7 wk
29 Apr
31 Jul
0 wk
23 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
12 – 19 May
22 Jun
3-4 wk
9 Jun
13 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 Apr
10 Jul
3-4 wk
29 Apr
31 Jul
0 wk
12 May
21 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Mar – 1 Apr
28 Jun
4-6 wk
29 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 Apr
15 Jul
3-4 wk
29 Apr
5 Aug
0 wk
23 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Mar – 1 Apr
28 Jun
4-6 wk
29 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Mar – 2 Apr
7 Jun
2-4 wk
16 Apr
21 Jun
2 wk before
16 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 Apr
21 Jun
1 wk before
23 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
1 – 8 Apr
30 Jul
3-4 wk
29 Apr
20 Aug
0 wk
9 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
31 May – 14 Jun
4-6 wk
12 Jul
11 wk after
Garden tomato
Solanum lycopersicum
31 Mar – 14 Apr
23 Apr
6-8 wk
26 May
4 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
28 Apr – 12 May
24 Jun
2-4 wk
26 May
8 Jul
4 wk after
9 Jun
28 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Mar – 1 Apr
28 Jun
4-6 wk
29 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 Apr
30 Jun
3-4 wk
29 Apr
21 Jul
0 wk
23 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
28 Apr – 12 May
31 May
4-6 wk
9 Jun
28 Jun
6 wk after
Lemon balm
Melissa officinalis
18 Feb – 4 Mar
26 May
8-10 wk
29 Apr
21 Jul
0 wk
25 May
11 Jul
4 wk after
Dill
Anethum graveolens
23 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
4 – 18 Mar
9 Jun
6-8 wk
29 Apr
21 Jul
0 wk
23 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
4 Feb – 4 Mar
26 May
8-12 wk
29 Apr
21 Jul
0 wk
25 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
29 Apr
20 Aug
0 wk
12 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
18 Feb – 4 Mar
11 May
8-10 wk
29 Apr
6 Jul
0 wk
Common thyme
Thymus vulgaris
18 Feb – 4 Mar
16 May
8-10 wk
29 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Mar
30 May
6-8 wk
29 Apr
11 Jul
0 wk
25 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
4 – 18 Mar
30 May
6-8 wk
29 Apr
11 Jul
0 wk
23 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
21 Jan – 18 Feb
12 Apr
10-14 wk
29 Apr
21 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
12 – 19 May
7 Jun
3-4 wk
9 Jun
28 Jun
6 wk after
Cornflower
Centaurea cyanus
29 Apr
21 Jul
0 wk
23 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
17 – 31 Mar
9 May
8-10 wk
26 May
4 Jul
4 wk after
Sweet William
Dianthus barbatus
4 – 18 Mar
6-8 wk
29 Apr
0 wk
4 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
23 May
6-8 wk
26 May
4 Jul
4 wk after
12 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
26 Mar – 9 Apr
30 May
6-8 wk
21 May
11 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Mar – 27 Apr
13 Jun
4-8 wk
25 May
11 Jul
4 wk after
25 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
18 Feb – 4 Mar
8-10 wk
29 Apr
0 wk
12 May
2 wk after
Busy lizzie
Impatiens walleriana
17 Mar – 14 Apr
2 Jul
8-12 wk
9 Jun
27 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
2 Jun
6-8 wk
26 May
14 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
28 Apr – 12 May
1 May
4-6 wk
9 Jun
6 wk after
Chinese lantern
Physalis alkekengi
18 Feb – 4 Mar
26 Apr
8-10 wk
29 Apr
21 Jun
0 wk
Love in a mist
Nigella damascena
29 Apr
6 Jul
0 wk
23 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
31 Mar – 14 Apr
13 May
6-8 wk
26 May
24 Jun
4 wk after
12 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
4 Feb – 4 Mar
26 Apr
8-12 wk
29 Apr
21 Jun
0 wk
Cardoon
Cynara cardunculus
3 – 31 Mar
27 Mar
8-12 wk
26 May
4 wk after
Regal-foxtail
Ptilotus nobilis
17 Mar – 14 Apr
23 Apr
8-12 wk
9 Jun
18 Jun
6 wk after
Globe amaranth
Gomphrena globosa
14 – 28 Apr
7 May
6-8 wk
9 Jun
18 Jun
6 wk after
Corn poppy
Papaver rhoeas
29 Apr
21 Jul
0 wk
23 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
4 Feb – 4 Mar
16 May
8-12 wk
29 Apr
11 Jul
0 wk
4 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
31 Mar – 14 Apr
19 May
8-10 wk
9 Jun
14 Jul
6 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Mar
6 Jun
5-8 wk
29 Apr
11 Jul
0 wk
Stock
Matthiola incana
4 – 18 Mar
9 Jun
6-8 wk
29 Apr
21 Jul
0 wk
12 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
4 – 18 Mar
10 May
6-8 wk
29 Apr
21 Jun
0 wk
12 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
28 Apr – 12 May
16 May
4-6 wk
9 Jun
13 Jun
6 wk after
Garden pansy
Viola × wittrockiana
18 Feb – 4 Mar
26 May
8-10 wk
29 Apr
21 Jul
0 wk
4 May
11 Jul
1 wk after
Petunia
Petunia
3 – 31 Mar
9 May
8-12 wk
26 May
4 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Mar
10 May
6-8 wk
29 Apr
21 Jun
0 wk
9 Jun
11 Jun
6 wk after
Common zinnia
Zinnia elegans
14 – 28 Apr
14 Jun
4-6 wk
26 May
12 Jul
4 wk after
Common morning glory
Ipomoea purpurea
5 – 19 May
7 Jun
3-5 wk
9 Jun
28 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
14 – 28 Apr
13 Jun
4-6 wk
26 May
11 Jul
4 wk after
9 Jun
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
4 Apr – 2 May
23 May
8-12 wk
27 Jun
18 Jul
8 wk after
Bee balm
Monarda didyma
4 Feb – 4 Mar
26 Apr
8-12 wk
29 Apr
21 Jun
0 wk
25 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
4 – 18 Mar
10 Apr
6-8 wk
29 Apr
22 May
0 wk
12 May
12 May
2 wk after
Safflower
Carthamus tinctorius
29 Apr
21 Jun
0 wk
23 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Mar
30 May
6-8 wk
29 Apr
11 Jul
0 wk
14 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
18 Mar – 1 Apr
13 Jun
4-6 wk
29 Apr
11 Jul
0 wk
12 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
17 – 31 Mar
3 Apr
10-12 wk
9 Jun
12 Jun
6 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
20 Jun
3-4 wk
26 May
11 Jul
4 wk after
25 May
1 Jul
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
9 Jun
6-8 wk
26 May
21 Jul
4 wk after
9 Jun
11 Jul
6 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
2 Jun
6-8 wk
17 May
14 Jul
3 wk after
9 Jun
4 Jul
6 wk after
Hollyhock
Alcea rosea
4 – 18 Mar
6-8 wk
29 Apr
0 wk
12 May
2 wk after
Alpine delphinium
Delphinium elatum
4 Feb – 4 Mar
26 Apr
8-12 wk
29 Apr
21 Jun
0 wk
25 May
11 Jun
4 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
2 Jun
6-8 wk
26 May
14 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Mar
30 May
6-8 wk
29 Apr
11 Jul
0 wk
9 Jun
1 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Feb – 4 Mar
16 Apr
8-10 wk
29 Apr
11 Jun
0 wk
25 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
31 Mar – 28 Apr
17 May
6-10 wk
9 Jun
28 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
29 Apr
21 Jul
0 wk
23 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
16 May
8-10 wk
26 May
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Mar
10 May
6-8 wk
29 Apr
21 Jun
0 wk
12 May
11 Jun
2 wk after