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Method
Rel. frost
Last spring frost (0°C) 27 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 225 days 27 Mar – 7 Nov
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)
6 – 20 Feb
18 Jun
5-7 wk
27 Mar
23 Jul
0 wk
20 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Feb
30 Jun
4-6 wk
27 Mar
28 Jul
0 wk
20 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
9 Feb – 9 Mar
18 Apr
8-12 wk
4 May
13 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Feb
13 Jun
5-7 wk
27 Mar
18 Jul
0 wk
15 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
18 – 25 Apr
12 Jun
3-4 wk
16 May
3 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 Apr
10 Jun
4-5 wk
16 May
8 Jul
7 wk after
2 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
28 Apr – 5 May
7 Jun
3-4 wk
26 May
28 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
2 – 30 Jan
3 Apr
8-12 wk
27 Mar
29 May
0 wk
6 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Mar
18 Jun
1 wk before
20 Mar
8 Jun
1 wk before
Maize
Zea mays
6 – 13 Apr
2 Jun
3-4 wk
4 May
23 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 Mar
7 Jul
3-4 wk
29 Mar
28 Jul
0 wk
6 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Mar
8 Jul
0 wk
15 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Feb
13 Jun
5-7 wk
27 Mar
18 Jul
0 wk
15 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
18 Feb – 4 Mar
10 Jun
4-6 wk
1 Apr
8 Jul
1 wk after
1 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Feb
23 Jun
5-7 wk
27 Mar
28 Jul
0 wk
20 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
18 – 25 Apr
2 Jul
3-4 wk
16 May
23 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 Mar
13 Jun
3-4 wk
29 Mar
4 Jul
0 wk
6 Apr
24 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Feb
25 Jun
4-6 wk
27 Mar
23 Jul
0 wk
Lettuce
Lactuca sativa
27 Feb – 6 Mar
12 Jul
3-4 wk
27 Mar
2 Aug
0 wk
20 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Feb
25 Jun
4-6 wk
27 Mar
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 Feb – 1 Mar
4 Jun
2-4 wk
15 Mar
18 Jun
2 wk before
15 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Mar
18 Jun
1 wk before
20 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
27 Feb – 6 Mar
27 Jul
3-4 wk
27 Mar
17 Aug
0 wk
9 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
23 Apr – 7 May
4-6 wk
4 Jun
10 wk after
Garden tomato
Solanum lycopersicum
9 – 23 Mar
12 May
6-8 wk
4 May
23 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 Apr
4 Jul
2-4 wk
4 May
18 Jul
5 wk after
2 May
8 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Feb
25 Jun
4-6 wk
27 Mar
23 Jul
0 wk
Garden pea
Pisum sativum
27 Feb – 6 Mar
27 Jun
3-4 wk
27 Mar
18 Jul
0 wk
20 Mar
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
4 – 18 Apr
10 Jun
4-6 wk
16 May
8 Jul
7 wk after
Lemon balm
Melissa officinalis
16 – 30 Jan
23 May
8-10 wk
27 Mar
18 Jul
0 wk
17 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
20 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
30 Jan – 13 Feb
6 Jun
6-8 wk
27 Mar
18 Jul
0 wk
26 Feb
8 Jul
4 wk before
Spearmint
Mentha spicata
2 – 30 Jan
23 May
8-12 wk
27 Mar
18 Jul
0 wk
17 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
27 Mar
17 Aug
0 wk
6 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
18 Jan – 1 Feb
8 May
8-10 wk
29 Mar
3 Jul
0 wk
Common thyme
Thymus vulgaris
16 – 30 Jan
13 May
8-10 wk
27 Mar
8 Jul
0 wk
Oregano
Origanum vulgare
30 Jan – 13 Feb
27 May
6-8 wk
27 Mar
8 Jul
0 wk
17 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
30 Jan – 13 Feb
27 May
6-8 wk
27 Mar
8 Jul
0 wk
20 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
21 Dec – 18 Jan
9 Apr
10-14 wk
29 Mar
18 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
18 – 25 Apr
17 Jun
3-4 wk
16 May
8 Jul
7 wk after
Cornflower
Centaurea cyanus
27 Mar
18 Jul
0 wk
20 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
23 Feb – 9 Mar
13 May
8-10 wk
4 May
8 Jul
5 wk after
Sweet William
Dianthus barbatus
30 Jan – 13 Feb
6-8 wk
27 Mar
0 wk
1 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
9 – 23 Mar
27 May
6-8 wk
4 May
8 Jul
5 wk after
4 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Mar
27 May
6-8 wk
27 Apr
8 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
20 Feb – 20 Mar
10 Jun
4-8 wk
17 Apr
8 Jul
3 wk after
17 Apr
28 Jun
3 wk after
Foxglove
Digitalis purpurea
16 – 30 Jan
8-10 wk
27 Mar
0 wk
6 Apr
1 wk after
Busy lizzie
Impatiens walleriana
21 Feb – 21 Mar
8 Jul
8-12 wk
16 May
2 Sep
7 wk after
Creeping zinnia
Sanvitalia procumbens
9 – 23 Mar
6 Jun
6-8 wk
4 May
18 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
4 – 18 Apr
11 May
4-6 wk
16 May
8 Jun
7 wk after
Chinese lantern
Physalis alkekengi
18 Jan – 1 Feb
23 Apr
8-10 wk
29 Mar
18 Jun
0 wk
Love in a mist
Nigella damascena
27 Mar
3 Jul
0 wk
20 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
9 – 23 Mar
17 May
6-8 wk
4 May
28 Jun
5 wk after
4 Jun
18 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
4 Jan – 1 Feb
23 Apr
8-12 wk
29 Mar
18 Jun
0 wk
Cardoon
Cynara cardunculus
9 Feb – 9 Mar
24 Mar
8-12 wk
4 May
19 May
5 wk after
Regal-foxtail
Ptilotus nobilis
21 Feb – 21 Mar
3 May
8-12 wk
16 May
28 Jun
7 wk after
Globe amaranth
Gomphrena globosa
21 Mar – 4 Apr
17 May
6-8 wk
16 May
28 Jun
7 wk after
Corn poppy
Papaver rhoeas
27 Mar
18 Jul
0 wk
20 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
2 – 30 Jan
13 May
8-12 wk
27 Mar
8 Jul
0 wk
1 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
7 – 21 Mar
23 May
8-10 wk
16 May
18 Jul
7 wk after
Sweet pea
Lathyrus odoratus
30 Jan – 20 Feb
3 Jun
5-8 wk
27 Mar
8 Jul
0 wk
Stock
Matthiola incana
30 Jan – 13 Feb
6 Jun
6-8 wk
27 Mar
18 Jul
0 wk
6 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
30 Jan – 13 Feb
7 May
6-8 wk
27 Mar
18 Jun
0 wk
6 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
4 – 18 Apr
26 May
4-6 wk
16 May
23 Jun
7 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Jan
23 May
8-10 wk
27 Mar
18 Jul
0 wk
1 Apr
8 Jul
1 wk after
Petunia
Petunia
9 Feb – 9 Mar
13 May
8-12 wk
4 May
8 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Feb
7 May
6-8 wk
29 Mar
18 Jun
0 wk
2 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
23 Mar – 6 Apr
20 Jun
4-6 wk
4 May
18 Jul
5 wk after
Common morning glory
Ipomoea purpurea
11 – 25 Apr
17 Jun
3-5 wk
16 May
8 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
23 Mar – 6 Apr
10 Jun
4-6 wk
4 May
8 Jul
5 wk after
2 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
13 Mar – 10 Apr
2 Jun
8-12 wk
5 Jun
28 Jul
10 wk after
Bee balm
Monarda didyma
2 – 30 Jan
23 Apr
8-12 wk
27 Mar
18 Jun
0 wk
17 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
30 Jan – 13 Feb
7 Apr
6-8 wk
27 Mar
19 May
0 wk
6 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
27 Mar
18 Jun
0 wk
20 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
30 Jan – 13 Feb
27 May
6-8 wk
27 Mar
8 Jul
0 wk
16 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
13 – 27 Feb
10 Jun
4-6 wk
27 Mar
8 Jul
0 wk
6 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
21 Feb – 7 Mar
9 Apr
10-12 wk
16 May
18 Jun
7 wk after
Sunflower
Helianthus annuus
6 – 13 Apr
17 Jun
3-4 wk
4 May
8 Jul
5 wk after
17 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
9 – 23 Mar
6 Jun
6-8 wk
4 May
18 Jul
5 wk after
2 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
3 wk after
2 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
30 Jan – 13 Feb
6-8 wk
27 Mar
0 wk
6 Apr
1 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Jan
23 Apr
8-12 wk
27 Mar
18 Jun
0 wk
17 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
9 – 23 Mar
6 Jun
6-8 wk
4 May
18 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Feb
27 May
6-8 wk
29 Mar
8 Jul
0 wk
2 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
16 – 30 Jan
13 Apr
8-10 wk
27 Mar
8 Jun
0 wk
17 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
7 Mar – 4 Apr
27 May
6-10 wk
16 May
8 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
27 Mar
18 Jul
0 wk
20 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
23 Feb – 9 Mar
13 May
8-10 wk
4 May
8 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
30 Jan – 13 Feb
7 May
6-8 wk
27 Mar
18 Jun
0 wk
15 Mar
8 Jun
2 wk before