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Rel. frost
Last spring frost (0°C) 20 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 220 days 20 Apr – 26 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)
2 – 16 Mar
18 Jun
5-7 wk
20 Apr
23 Jul
0 wk
13 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Mar
30 Jun
4-6 wk
20 Apr
28 Jul
0 wk
13 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
3 – 31 Mar
19 Mar
8-12 wk
26 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Mar
13 Jun
5-7 wk
20 Apr
18 Jul
0 wk
8 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
28 Apr – 5 May
8 Jun
3-4 wk
26 May
29 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
21 – 28 Apr
10 Jun
4-5 wk
26 May
8 Jul
5 wk after
26 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
19 – 26 May
23 May
3-4 wk
16 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Jan – 23 Feb
3 Apr
8-12 wk
20 Apr
29 May
0 wk
30 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 Apr
18 Jun
1 wk before
13 Apr
8 Jun
1 wk before
Maize
Zea mays
11 – 18 Apr
29 May
3-4 wk
9 May
19 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Mar – 5 Apr
7 Jul
3-4 wk
26 Apr
28 Jul
1 wk after
30 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Apr
8 Jul
0 wk
8 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Mar
13 Jun
5-7 wk
20 Apr
18 Jul
0 wk
8 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
14 – 28 Mar
10 Jun
4-6 wk
25 Apr
8 Jul
1 wk after
25 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Mar
23 Jun
5-7 wk
20 Apr
28 Jul
0 wk
13 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
28 Apr – 5 May
27 Jun
3-4 wk
26 May
18 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Mar – 5 Apr
5 Jul
3-4 wk
26 Apr
26 Jul
1 wk after
30 Apr
16 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Mar
25 Jun
4-6 wk
20 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Mar
12 Jul
3-4 wk
20 Apr
2 Aug
0 wk
13 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Mar
25 Jun
4-6 wk
20 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Mar
4 Jun
2-4 wk
8 Apr
18 Jun
2 wk before
8 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 Apr
18 Jun
1 wk before
13 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
23 – 30 Mar
27 Jul
3-4 wk
20 Apr
17 Aug
0 wk
2 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
17 – 31 May
4-6 wk
28 Jun
10 wk after
Garden tomato
Solanum lycopersicum
14 – 28 Mar
8 May
6-8 wk
9 May
19 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
11 – 25 Apr
29 Jun
2-4 wk
9 May
13 Jul
3 wk after
26 May
3 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Mar
25 Jun
4-6 wk
20 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Mar
27 Jun
3-4 wk
20 Apr
18 Jul
0 wk
13 Apr
8 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
14 – 28 Apr
5 Jun
4-6 wk
26 May
3 Jul
5 wk after
Lemon balm
Melissa officinalis
9 – 23 Feb
23 May
8-10 wk
20 Apr
18 Jul
0 wk
11 May
8 Jul
3 wk after
Dill
Anethum graveolens
13 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
0 wk
22 Mar
8 Jul
4 wk before
Spearmint
Mentha spicata
26 Jan – 23 Feb
23 May
8-12 wk
20 Apr
18 Jul
0 wk
11 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
20 Apr
17 Aug
0 wk
30 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
15 Feb – 1 Mar
8 May
8-10 wk
26 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
9 – 23 Feb
13 May
8-10 wk
20 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
23 Feb – 9 Mar
27 May
6-8 wk
20 Apr
8 Jul
0 wk
11 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
23 Feb – 9 Mar
27 May
6-8 wk
20 Apr
8 Jul
0 wk
13 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
18 Jan – 15 Feb
9 Apr
10-14 wk
26 Apr
18 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
28 Apr – 5 May
12 Jun
3-4 wk
26 May
3 Jul
5 wk after
Cornflower
Centaurea cyanus
20 Apr
18 Jul
0 wk
13 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
28 Feb – 14 Mar
13 May
8-10 wk
9 May
8 Jul
3 wk after
Sweet William
Dianthus barbatus
23 Feb – 9 Mar
6-8 wk
20 Apr
0 wk
25 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
14 – 28 Mar
27 May
6-8 wk
9 May
8 Jul
3 wk after
28 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Mar
27 May
6-8 wk
4 May
8 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
16 Mar – 13 Apr
10 Jun
4-8 wk
11 May
8 Jul
3 wk after
11 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
9 – 23 Feb
8-10 wk
20 Apr
0 wk
30 Apr
1 wk after
Busy lizzie
Impatiens walleriana
3 – 31 Mar
7 Jul
8-12 wk
26 May
1 Sep
5 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Mar
6 Jun
6-8 wk
9 May
18 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
14 – 28 Apr
6 May
4-6 wk
26 May
3 Jun
5 wk after
Chinese lantern
Physalis alkekengi
15 Feb – 1 Mar
23 Apr
8-10 wk
26 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
20 Apr
3 Jul
0 wk
13 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
14 – 28 Mar
17 May
6-8 wk
9 May
28 Jun
3 wk after
28 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
1 Feb – 1 Mar
23 Apr
8-12 wk
26 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
14 Feb – 14 Mar
24 Mar
8-12 wk
9 May
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
3 – 31 Mar
28 Apr
8-12 wk
26 May
23 Jun
5 wk after
Globe amaranth
Gomphrena globosa
31 Mar – 14 Apr
12 May
6-8 wk
26 May
23 Jun
5 wk after
Corn poppy
Papaver rhoeas
20 Apr
18 Jul
0 wk
13 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
26 Jan – 23 Feb
13 May
8-12 wk
20 Apr
8 Jul
0 wk
25 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
17 – 31 Mar
23 May
8-10 wk
26 May
18 Jul
5 wk after
Sweet pea
Lathyrus odoratus
23 Feb – 16 Mar
3 Jun
5-8 wk
20 Apr
8 Jul
0 wk
Stock
Matthiola incana
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
0 wk
30 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
23 Feb – 9 Mar
7 May
6-8 wk
20 Apr
18 Jun
0 wk
30 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
14 – 28 Apr
21 May
4-6 wk
26 May
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Feb
23 May
8-10 wk
20 Apr
18 Jul
0 wk
25 Apr
8 Jul
1 wk after
Petunia
Petunia
14 Feb – 14 Mar
13 May
8-12 wk
9 May
8 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Mar
7 May
6-8 wk
26 Apr
18 Jun
1 wk after
26 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
28 Mar – 11 Apr
19 Jun
4-6 wk
9 May
17 Jul
3 wk after
Common morning glory
Ipomoea purpurea
21 Apr – 5 May
12 Jun
3-5 wk
26 May
3 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
28 Mar – 11 Apr
10 Jun
4-6 wk
9 May
8 Jul
3 wk after
26 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
15 Mar – 12 Apr
28 May
8-12 wk
7 Jun
23 Jul
7 wk after
Bee balm
Monarda didyma
26 Jan – 23 Feb
23 Apr
8-12 wk
20 Apr
18 Jun
0 wk
11 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
23 Feb – 9 Mar
7 Apr
6-8 wk
20 Apr
19 May
0 wk
30 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
20 Apr
18 Jun
0 wk
13 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
23 Feb – 9 Mar
27 May
6-8 wk
20 Apr
8 Jul
0 wk
12 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
9 – 23 Mar
10 Jun
4-6 wk
20 Apr
8 Jul
0 wk
30 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
3 – 17 Mar
8 Apr
10-12 wk
26 May
17 Jun
5 wk after
Sunflower
Helianthus annuus
11 – 18 Apr
17 Jun
3-4 wk
9 May
8 Jul
3 wk after
11 May
28 Jun
3 wk after
China aster
Callistephus chinensis
14 – 28 Mar
6 Jun
6-8 wk
9 May
18 Jul
3 wk after
26 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
6 – 20 Mar
6 Jun
6-8 wk
1 May
18 Jul
2 wk after
26 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
23 Feb – 9 Mar
6-8 wk
20 Apr
0 wk
30 Apr
1 wk after
Alpine delphinium
Delphinium elatum
26 Jan – 23 Feb
23 Apr
8-12 wk
20 Apr
18 Jun
0 wk
11 May
8 Jun
3 wk after
African marigold
Tagetes erecta
14 – 28 Mar
6 Jun
6-8 wk
9 May
18 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Mar
27 May
6-8 wk
26 Apr
8 Jul
1 wk after
26 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
9 – 23 Feb
13 Apr
8-10 wk
20 Apr
8 Jun
0 wk
11 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
17 Mar – 14 Apr
22 May
6-10 wk
26 May
3 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
20 Apr
18 Jul
0 wk
13 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
28 Feb – 14 Mar
13 May
8-10 wk
9 May
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
23 Feb – 9 Mar
7 May
6-8 wk
20 Apr
18 Jun
0 wk
8 Apr
8 Jun
2 wk before