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Rel. frost
Last spring frost (0°C) 24 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 210 days 24 Apr – 20 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)
6 – 20 Mar
19 Jun
5-7 wk
24 Apr
24 Jul
0 wk
18 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Mar
1 Jul
4-6 wk
24 Apr
29 Jul
0 wk
18 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
12 Mar – 9 Apr
21 Apr
8-12 wk
4 Jun
16 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Mar
14 Jun
5-7 wk
24 Apr
19 Jul
0 wk
11 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
7 – 14 May
30 Jun
3-4 wk
4 Jun
21 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
30 Apr – 7 May
11 Jun
4-5 wk
4 Jun
9 Jul
6 wk after
4 Jun
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Fleece
2 – 9 Jun
8 Jun
3-4 wk
30 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
30 Jan – 27 Feb
4 Apr
8-12 wk
24 Apr
30 May
0 wk
7 May
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
19 Jun
1 wk before
18 Apr
9 Jun
1 wk before
Maize
Zea mays
23 – 30 Apr
20 Jun
3-4 wk
21 May
11 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Mar – 3 Apr
8 Jul
3-4 wk
24 Apr
29 Jul
0 wk
7 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Apr
9 Jul
0 wk
11 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Mar
14 Jun
5-7 wk
24 Apr
19 Jul
0 wk
11 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
18 Mar – 1 Apr
11 Jun
4-6 wk
29 Apr
9 Jul
1 wk after
29 Apr
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Mar
24 Jun
5-7 wk
24 Apr
29 Jul
0 wk
18 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
7 – 14 May
13 Jul
3-4 wk
4 Jun
3 Aug
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Mar – 3 Apr
5 Jul
3-4 wk
24 Apr
26 Jul
0 wk
7 May
16 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Mar
26 Jun
4-6 wk
24 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
27 Mar – 3 Apr
13 Jul
3-4 wk
24 Apr
3 Aug
0 wk
18 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Mar
26 Jun
4-6 wk
24 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)
18 Apr
19 Jun
1 wk before
18 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
27 Mar – 3 Apr
28 Jul
3-4 wk
24 Apr
18 Aug
0 wk
4 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
26 May – 9 Jun
4-6 wk
7 Jul
11 wk after
Garden tomato
Solanum lycopersicum
26 Mar – 9 Apr
30 May
6-8 wk
21 May
11 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 Apr – 7 May
15 Jul
2-4 wk
21 May
29 Jul
4 wk after
4 Jun
19 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Mar
26 Jun
4-6 wk
24 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
27 Mar – 3 Apr
28 Jun
3-4 wk
24 Apr
19 Jul
0 wk
18 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
23 Apr – 7 May
21 Jun
4-6 wk
4 Jun
19 Jul
6 wk after
Lemon balm
Melissa officinalis
13 – 27 Feb
24 May
8-10 wk
24 Apr
19 Jul
0 wk
20 May
9 Jul
4 wk after
Dill
Anethum graveolens
18 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
27 Feb – 13 Mar
7 Jun
6-8 wk
24 Apr
19 Jul
0 wk
21 Mar
9 Jul
5 wk before
Spearmint
Mentha spicata
30 Jan – 27 Feb
24 May
8-12 wk
24 Apr
19 Jul
0 wk
20 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
24 Apr
18 Aug
0 wk
7 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
13 – 27 Feb
9 May
8-10 wk
24 Apr
4 Jul
0 wk
Common thyme
Thymus vulgaris
13 – 27 Feb
14 May
8-10 wk
24 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
27 Feb – 13 Mar
28 May
6-8 wk
24 Apr
9 Jul
0 wk
20 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
27 Feb – 13 Mar
28 May
6-8 wk
24 Apr
9 Jul
0 wk
18 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
16 Jan – 13 Feb
10 Apr
10-14 wk
24 Apr
19 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
7 – 14 May
28 Jun
3-4 wk
4 Jun
19 Jul
6 wk after
Cornflower
Centaurea cyanus
24 Apr
19 Jul
0 wk
18 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
12 – 26 Mar
14 May
8-10 wk
21 May
9 Jul
4 wk after
Sweet William
Dianthus barbatus
27 Feb – 13 Mar
6-8 wk
24 Apr
0 wk
29 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
26 Mar – 9 Apr
28 May
6-8 wk
21 May
9 Jul
4 wk after
7 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
21 Mar – 4 Apr
28 May
6-8 wk
16 May
9 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
25 Mar – 22 Apr
11 Jun
4-8 wk
20 May
9 Jul
4 wk after
20 May
29 Jun
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Feb
8-10 wk
24 Apr
0 wk
7 May
2 wk after
Busy lizzie
Impatiens walleriana
12 Mar – 9 Apr
9 Jul
8-12 wk
4 Jun
3 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
26 Mar – 9 Apr
7 Jun
6-8 wk
21 May
19 Jul
4 wk after
Hyacinth bean
Dolichos lablab
11 – 25 May
14 May
4-6 wk
22 Jun
8 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Feb
24 Apr
8-10 wk
24 Apr
19 Jun
0 wk
Love in a mist
Nigella damascena
24 Apr
4 Jul
0 wk
18 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
26 Mar – 9 Apr
18 May
6-8 wk
21 May
29 Jun
4 wk after
7 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
30 Jan – 27 Feb
24 Apr
8-12 wk
24 Apr
19 Jun
0 wk
Cardoon
Cynara cardunculus
26 Feb – 26 Mar
25 Mar
8-12 wk
21 May
4 wk after
Regal-foxtail
Ptilotus nobilis
12 Mar – 9 Apr
14 May
8-12 wk
4 Jun
9 Jul
6 wk after
Globe amaranth
Gomphrena globosa
9 – 23 Apr
28 May
6-8 wk
4 Jun
9 Jul
6 wk after
Corn poppy
Papaver rhoeas
24 Apr
19 Jul
0 wk
18 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
30 Jan – 27 Feb
14 May
8-12 wk
24 Apr
9 Jul
0 wk
29 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
26 Mar – 9 Apr
24 May
8-10 wk
4 Jun
19 Jul
6 wk after
Sweet pea
Lathyrus odoratus
27 Feb – 20 Mar
4 Jun
5-8 wk
24 Apr
9 Jul
0 wk
Stock
Matthiola incana
27 Feb – 13 Mar
7 Jun
6-8 wk
24 Apr
19 Jul
0 wk
7 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
27 Feb – 13 Mar
8 May
6-8 wk
24 Apr
19 Jun
0 wk
7 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
23 Apr – 7 May
6 Jun
4-6 wk
4 Jun
4 Jul
6 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Feb
24 May
8-10 wk
24 Apr
19 Jul
0 wk
29 Apr
9 Jul
1 wk after
Petunia
Petunia
26 Feb – 26 Mar
14 May
8-12 wk
21 May
9 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Feb – 13 Mar
8 May
6-8 wk
24 Apr
19 Jun
0 wk
4 Jun
9 Jun
6 wk after
Common zinnia
Zinnia elegans
9 – 23 Apr
21 Jun
4-6 wk
21 May
19 Jul
4 wk after
Common morning glory
Ipomoea purpurea
30 Apr – 14 May
28 Jun
3-5 wk
4 Jun
19 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 Apr
11 Jun
4-6 wk
21 May
9 Jul
4 wk after
4 Jun
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
30 Mar – 27 Apr
13 Jun
8-12 wk
22 Jun
8 Aug
8 wk after
Bee balm
Monarda didyma
30 Jan – 27 Feb
24 Apr
8-12 wk
24 Apr
19 Jun
0 wk
20 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
27 Feb – 13 Mar
8 Apr
6-8 wk
24 Apr
20 May
0 wk
7 May
10 May
2 wk after
Safflower
Carthamus tinctorius
24 Apr
19 Jun
0 wk
18 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
27 Feb – 13 Mar
28 May
6-8 wk
24 Apr
9 Jul
0 wk
9 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
13 – 27 Mar
11 Jun
4-6 wk
24 Apr
9 Jul
0 wk
7 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
12 – 26 Mar
10 Apr
10-12 wk
4 Jun
19 Jun
6 wk after
Sunflower
Helianthus annuus
23 – 30 Apr
18 Jun
3-4 wk
21 May
9 Jul
4 wk after
20 May
29 Jun
4 wk after
China aster
Callistephus chinensis
26 Mar – 9 Apr
7 Jun
6-8 wk
21 May
19 Jul
4 wk after
4 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
17 – 31 Mar
7 Jun
6-8 wk
12 May
19 Jul
3 wk after
4 Jun
9 Jul
6 wk after
Hollyhock
Alcea rosea
27 Feb – 13 Mar
6-8 wk
24 Apr
0 wk
7 May
2 wk after
Alpine delphinium
Delphinium elatum
30 Jan – 27 Feb
24 Apr
8-12 wk
24 Apr
19 Jun
0 wk
20 May
9 Jun
4 wk after
African marigold
Tagetes erecta
26 Mar – 9 Apr
7 Jun
6-8 wk
21 May
19 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
27 Feb – 13 Mar
28 May
6-8 wk
24 Apr
9 Jul
0 wk
4 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Feb
14 Apr
8-10 wk
24 Apr
9 Jun
0 wk
20 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
26 Mar – 23 Apr
7 Jun
6-10 wk
4 Jun
19 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
24 Apr
19 Jul
0 wk
18 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
12 – 26 Mar
14 May
8-10 wk
21 May
9 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
27 Feb – 13 Mar
8 May
6-8 wk
24 Apr
19 Jun
0 wk
11 Apr
9 Jun
2 wk before