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Method
Rel. frost
Last spring frost (0°C) 25 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 203 days 25 Apr – 14 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)
7 – 21 Mar
19 Jun
5-7 wk
25 Apr
24 Jul
0 wk
19 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Mar
1 Jul
4-6 wk
25 Apr
29 Jul
0 wk
19 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
13 Mar – 10 Apr
20 Apr
8-12 wk
5 Jun
15 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Mar
14 Jun
5-7 wk
25 Apr
19 Jul
0 wk
12 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
8 – 15 May
29 Jun
3-4 wk
5 Jun
20 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 May
11 Jun
4-5 wk
5 Jun
9 Jul
6 wk after
5 Jun
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Fleece
3 – 10 Jun
7 Jun
3-4 wk
1 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
31 Jan – 28 Feb
4 Apr
8-12 wk
25 Apr
30 May
0 wk
8 May
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Apr
19 Jun
1 wk before
19 Apr
9 Jun
1 wk before
Maize
Zea mays
24 Apr – 1 May
19 Jun
3-4 wk
22 May
10 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Mar – 4 Apr
8 Jul
3-4 wk
25 Apr
29 Jul
0 wk
8 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 Apr
9 Jul
0 wk
12 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Mar
14 Jun
5-7 wk
25 Apr
19 Jul
0 wk
12 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
19 Mar – 2 Apr
11 Jun
4-6 wk
30 Apr
9 Jul
1 wk after
30 Apr
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Mar
24 Jun
5-7 wk
25 Apr
29 Jul
0 wk
19 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
8 – 15 May
12 Jul
3-4 wk
5 Jun
2 Aug
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Mar – 4 Apr
8 Jul
3-4 wk
25 Apr
29 Jul
0 wk
8 May
19 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Mar
26 Jun
4-6 wk
25 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
28 Mar – 4 Apr
13 Jul
3-4 wk
25 Apr
3 Aug
0 wk
19 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Mar
26 Jun
4-6 wk
25 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Mar
5 Jun
2-4 wk
12 Apr
19 Jun
2 wk before
12 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 Apr
19 Jun
1 wk before
19 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
28 Mar – 4 Apr
28 Jul
3-4 wk
25 Apr
18 Aug
0 wk
5 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 May – 10 Jun
4-6 wk
8 Jul
11 wk after
Garden tomato
Solanum lycopersicum
27 Mar – 10 Apr
29 May
6-8 wk
22 May
10 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
24 Apr – 8 May
14 Jul
2-4 wk
22 May
28 Jul
4 wk after
5 Jun
18 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Mar
26 Jun
4-6 wk
25 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
28 Mar – 4 Apr
28 Jun
3-4 wk
25 Apr
19 Jul
0 wk
19 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
24 Apr – 8 May
20 Jun
4-6 wk
5 Jun
18 Jul
6 wk after
Lemon balm
Melissa officinalis
14 – 28 Feb
24 May
8-10 wk
25 Apr
19 Jul
0 wk
21 May
9 Jul
4 wk after
Dill
Anethum graveolens
19 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
28 Feb – 14 Mar
7 Jun
6-8 wk
25 Apr
19 Jul
0 wk
22 Mar
9 Jul
5 wk before
Spearmint
Mentha spicata
31 Jan – 28 Feb
24 May
8-12 wk
25 Apr
19 Jul
0 wk
21 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
25 Apr
18 Aug
0 wk
8 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
14 – 28 Feb
9 May
8-10 wk
25 Apr
4 Jul
0 wk
Common thyme
Thymus vulgaris
14 – 28 Feb
14 May
8-10 wk
25 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
28 Feb – 14 Mar
28 May
6-8 wk
25 Apr
9 Jul
0 wk
21 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
28 Feb – 14 Mar
28 May
6-8 wk
25 Apr
9 Jul
0 wk
19 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
17 Jan – 14 Feb
10 Apr
10-14 wk
25 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
8 – 15 May
27 Jun
3-4 wk
5 Jun
18 Jul
6 wk after
Cornflower
Centaurea cyanus
25 Apr
19 Jul
0 wk
19 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Mar
14 May
8-10 wk
22 May
9 Jul
4 wk after
Sweet William
Dianthus barbatus
28 Feb – 14 Mar
6-8 wk
25 Apr
0 wk
30 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Mar – 10 Apr
28 May
6-8 wk
22 May
9 Jul
4 wk after
8 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
22 Mar – 5 Apr
28 May
6-8 wk
17 May
9 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Mar – 23 Apr
11 Jun
4-8 wk
21 May
9 Jul
4 wk after
21 May
29 Jun
4 wk after
Foxglove
Digitalis purpurea
14 – 28 Feb
8-10 wk
25 Apr
0 wk
8 May
2 wk after
Busy lizzie
Impatiens walleriana
13 Mar – 10 Apr
9 Jul
8-12 wk
5 Jun
3 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
27 Mar – 10 Apr
7 Jun
6-8 wk
22 May
19 Jul
4 wk after
Hyacinth bean
Dolichos lablab
12 – 26 May
13 May
4-6 wk
23 Jun
8 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Feb
24 Apr
8-10 wk
25 Apr
19 Jun
0 wk
Love in a mist
Nigella damascena
25 Apr
4 Jul
0 wk
19 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
27 Mar – 10 Apr
18 May
6-8 wk
22 May
29 Jun
4 wk after
8 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
31 Jan – 28 Feb
24 Apr
8-12 wk
25 Apr
19 Jun
0 wk
Cardoon
Cynara cardunculus
27 Feb – 27 Mar
25 Mar
8-12 wk
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
13 Mar – 10 Apr
13 May
8-12 wk
5 Jun
8 Jul
6 wk after
Globe amaranth
Gomphrena globosa
10 – 24 Apr
27 May
6-8 wk
5 Jun
8 Jul
6 wk after
Corn poppy
Papaver rhoeas
25 Apr
19 Jul
0 wk
19 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
31 Jan – 28 Feb
14 May
8-12 wk
25 Apr
9 Jul
0 wk
30 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
27 Mar – 10 Apr
24 May
8-10 wk
5 Jun
19 Jul
6 wk after
Sweet pea
Lathyrus odoratus
28 Feb – 21 Mar
4 Jun
5-8 wk
25 Apr
9 Jul
0 wk
Stock
Matthiola incana
28 Feb – 14 Mar
7 Jun
6-8 wk
25 Apr
19 Jul
0 wk
8 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
28 Feb – 14 Mar
8 May
6-8 wk
25 Apr
19 Jun
0 wk
8 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
24 Apr – 8 May
5 Jun
4-6 wk
5 Jun
3 Jul
6 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Feb
24 May
8-10 wk
25 Apr
19 Jul
0 wk
30 Apr
9 Jul
1 wk after
Petunia
Petunia
27 Feb – 27 Mar
14 May
8-12 wk
22 May
9 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Feb – 14 Mar
8 May
6-8 wk
25 Apr
19 Jun
0 wk
5 Jun
9 Jun
6 wk after
Common zinnia
Zinnia elegans
10 – 24 Apr
21 Jun
4-6 wk
22 May
19 Jul
4 wk after
Common morning glory
Ipomoea purpurea
1 – 15 May
27 Jun
3-5 wk
5 Jun
18 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
10 – 24 Apr
11 Jun
4-6 wk
22 May
9 Jul
4 wk after
5 Jun
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
31 Mar – 28 Apr
12 Jun
8-12 wk
23 Jun
7 Aug
8 wk after
Bee balm
Monarda didyma
31 Jan – 28 Feb
24 Apr
8-12 wk
25 Apr
19 Jun
0 wk
21 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
28 Feb – 14 Mar
8 Apr
6-8 wk
25 Apr
20 May
0 wk
8 May
10 May
2 wk after
Safflower
Carthamus tinctorius
25 Apr
19 Jun
0 wk
19 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
28 Feb – 14 Mar
28 May
6-8 wk
25 Apr
9 Jul
0 wk
10 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
14 – 28 Mar
11 Jun
4-6 wk
25 Apr
9 Jul
0 wk
8 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
13 – 27 Mar
10 Apr
10-12 wk
5 Jun
19 Jun
6 wk after
Sunflower
Helianthus annuus
24 Apr – 1 May
18 Jun
3-4 wk
22 May
9 Jul
4 wk after
21 May
29 Jun
4 wk after
China aster
Callistephus chinensis
27 Mar – 10 Apr
7 Jun
6-8 wk
22 May
19 Jul
4 wk after
5 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
18 Mar – 1 Apr
7 Jun
6-8 wk
13 May
19 Jul
3 wk after
5 Jun
9 Jul
6 wk after
Hollyhock
Alcea rosea
28 Feb – 14 Mar
6-8 wk
25 Apr
0 wk
8 May
2 wk after
Alpine delphinium
Delphinium elatum
31 Jan – 28 Feb
24 Apr
8-12 wk
25 Apr
19 Jun
0 wk
21 May
9 Jun
4 wk after
African marigold
Tagetes erecta
27 Mar – 10 Apr
7 Jun
6-8 wk
22 May
19 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
28 Feb – 14 Mar
28 May
6-8 wk
25 Apr
9 Jul
0 wk
5 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Feb
14 Apr
8-10 wk
25 Apr
9 Jun
0 wk
21 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
27 Mar – 24 Apr
6 Jun
6-10 wk
5 Jun
18 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
25 Apr
19 Jul
0 wk
19 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Mar
14 May
8-10 wk
22 May
9 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
28 Feb – 14 Mar
8 May
6-8 wk
25 Apr
19 Jun
0 wk
12 Apr
9 Jun
2 wk before