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Method
Rel. frost
Last spring frost (0°C) 10 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 193 days 10 Apr – 20 Oct
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)
20 Feb – 6 Mar
21 Jun
5-7 wk
10 Apr
26 Jul
0 wk
4 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
27 Feb – 13 Mar
3 Jul
4-6 wk
10 Apr
31 Jul
0 wk
4 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
12 Feb – 12 Mar
20 Apr
8-12 wk
7 May
15 Jun
4 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Feb – 6 Mar
16 Jun
5-7 wk
10 Apr
21 Jul
0 wk
28 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
23 – 30 Apr
14 Jun
3-4 wk
21 May
5 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 Apr
13 Jun
4-5 wk
21 May
11 Jul
6 wk after
21 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
3 – 10 May
10 Jun
3-4 wk
31 May
1 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Jan – 13 Feb
6 Apr
8-12 wk
10 Apr
1 Jun
0 wk
23 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 Apr
21 Jun
1 wk before
4 Apr
11 Jun
1 wk before
Maize
Zea mays
9 – 16 Apr
4 Jun
3-4 wk
7 May
25 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Mar
10 Jul
3-4 wk
10 Apr
31 Jul
0 wk
23 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 Apr
11 Jul
0 wk
28 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Feb – 6 Mar
16 Jun
5-7 wk
10 Apr
21 Jul
0 wk
28 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
4 – 18 Mar
13 Jun
4-6 wk
15 Apr
11 Jul
1 wk after
15 Apr
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Feb – 6 Mar
26 Jun
5-7 wk
10 Apr
31 Jul
0 wk
4 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
23 – 30 Apr
2 Jul
3-4 wk
21 May
23 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Mar
25 Jun
3-4 wk
10 Apr
16 Jul
0 wk
23 Apr
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Feb – 13 Mar
28 Jun
4-6 wk
10 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Mar
15 Jul
3-4 wk
10 Apr
5 Aug
0 wk
4 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Feb – 13 Mar
28 Jun
4-6 wk
10 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Feb – 14 Mar
7 Jun
2-4 wk
28 Mar
21 Jun
2 wk before
28 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 Apr
21 Jun
1 wk before
4 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
13 – 20 Mar
30 Jul
3-4 wk
10 Apr
20 Aug
0 wk
21 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
12 – 26 May
4-6 wk
23 Jun
11 wk after
Garden tomato
Solanum lycopersicum
12 – 26 Mar
14 May
6-8 wk
7 May
25 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
9 – 23 Apr
4 Jul
2-4 wk
7 May
18 Jul
4 wk after
21 May
8 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Feb – 13 Mar
28 Jun
4-6 wk
10 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Mar
30 Jun
3-4 wk
10 Apr
21 Jul
0 wk
4 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
9 – 23 Apr
10 Jun
4-6 wk
21 May
8 Jul
6 wk after
Lemon balm
Melissa officinalis
30 Jan – 13 Feb
26 May
8-10 wk
10 Apr
21 Jul
0 wk
6 May
11 Jul
4 wk after
Dill
Anethum graveolens
4 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
13 – 27 Feb
9 Jun
6-8 wk
10 Apr
21 Jul
0 wk
4 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
16 Jan – 13 Feb
26 May
8-12 wk
10 Apr
21 Jul
0 wk
6 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
10 Apr
20 Aug
0 wk
23 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
30 Jan – 13 Feb
11 May
8-10 wk
10 Apr
6 Jul
0 wk
Common thyme
Thymus vulgaris
30 Jan – 13 Feb
16 May
8-10 wk
10 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Feb
30 May
6-8 wk
10 Apr
11 Jul
0 wk
6 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
13 – 27 Feb
30 May
6-8 wk
10 Apr
11 Jul
0 wk
4 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
2 – 30 Jan
12 Apr
10-14 wk
10 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
23 – 30 Apr
17 Jun
3-4 wk
21 May
8 Jul
6 wk after
Cornflower
Centaurea cyanus
10 Apr
21 Jul
0 wk
4 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
26 Feb – 12 Mar
16 May
8-10 wk
7 May
11 Jul
4 wk after
Sweet William
Dianthus barbatus
13 – 27 Feb
6-8 wk
10 Apr
0 wk
15 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Mar
30 May
6-8 wk
7 May
11 Jul
4 wk after
23 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
7 – 21 Mar
30 May
6-8 wk
2 May
11 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
11 Mar – 8 Apr
13 Jun
4-8 wk
6 May
11 Jul
4 wk after
6 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
30 Jan – 13 Feb
8-10 wk
10 Apr
0 wk
23 Apr
2 wk after
Busy lizzie
Impatiens walleriana
26 Feb – 26 Mar
11 Jul
8-12 wk
21 May
5 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Mar
9 Jun
6-8 wk
7 May
21 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
9 – 23 Apr
11 May
4-6 wk
21 May
8 Jun
6 wk after
Chinese lantern
Physalis alkekengi
30 Jan – 13 Feb
26 Apr
8-10 wk
10 Apr
21 Jun
0 wk
Love in a mist
Nigella damascena
10 Apr
6 Jul
0 wk
4 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
12 – 26 Mar
20 May
6-8 wk
7 May
1 Jul
4 wk after
23 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
16 Jan – 13 Feb
26 Apr
8-12 wk
10 Apr
21 Jun
0 wk
Cardoon
Cynara cardunculus
12 Feb – 12 Mar
27 Mar
8-12 wk
7 May
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
26 Feb – 26 Mar
3 May
8-12 wk
21 May
28 Jun
6 wk after
Globe amaranth
Gomphrena globosa
26 Mar – 9 Apr
17 May
6-8 wk
21 May
28 Jun
6 wk after
Corn poppy
Papaver rhoeas
10 Apr
21 Jul
0 wk
4 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
16 Jan – 13 Feb
16 May
8-12 wk
10 Apr
11 Jul
0 wk
15 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
12 – 26 Mar
26 May
8-10 wk
21 May
21 Jul
6 wk after
Sweet pea
Lathyrus odoratus
13 Feb – 6 Mar
6 Jun
5-8 wk
10 Apr
11 Jul
0 wk
Stock
Matthiola incana
13 – 27 Feb
9 Jun
6-8 wk
10 Apr
21 Jul
0 wk
23 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
13 – 27 Feb
10 May
6-8 wk
10 Apr
21 Jun
0 wk
23 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
9 – 23 Apr
26 May
4-6 wk
21 May
23 Jun
6 wk after
Garden pansy
Viola × wittrockiana
30 Jan – 13 Feb
26 May
8-10 wk
10 Apr
21 Jul
0 wk
15 Apr
11 Jul
1 wk after
Petunia
Petunia
12 Feb – 12 Mar
16 May
8-12 wk
7 May
11 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
13 – 27 Feb
10 May
6-8 wk
10 Apr
21 Jun
0 wk
21 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
4 wk after
Common morning glory
Ipomoea purpurea
16 – 30 Apr
17 Jun
3-5 wk
21 May
8 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
26 Mar – 9 Apr
13 Jun
4-6 wk
7 May
11 Jul
4 wk after
21 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
16 Mar – 13 Apr
2 Jun
8-12 wk
8 Jun
28 Jul
8 wk after
Bee balm
Monarda didyma
16 Jan – 13 Feb
26 Apr
8-12 wk
10 Apr
21 Jun
0 wk
6 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
13 – 27 Feb
10 Apr
6-8 wk
10 Apr
22 May
0 wk
23 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
10 Apr
21 Jun
0 wk
4 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Feb
30 May
6-8 wk
10 Apr
11 Jul
0 wk
23 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
27 Feb – 13 Mar
13 Jun
4-6 wk
10 Apr
11 Jul
0 wk
23 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
26 Feb – 12 Mar
12 Apr
10-12 wk
21 May
21 Jun
6 wk after
Sunflower
Helianthus annuus
9 – 16 Apr
20 Jun
3-4 wk
7 May
11 Jul
4 wk after
6 May
1 Jul
4 wk after
China aster
Callistephus chinensis
12 – 26 Mar
9 Jun
6-8 wk
7 May
21 Jul
4 wk after
21 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
3 – 17 Mar
9 Jun
6-8 wk
28 Apr
21 Jul
3 wk after
21 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
13 – 27 Feb
6-8 wk
10 Apr
0 wk
23 Apr
2 wk after
Alpine delphinium
Delphinium elatum
16 Jan – 13 Feb
26 Apr
8-12 wk
10 Apr
21 Jun
0 wk
6 May
11 Jun
4 wk after
African marigold
Tagetes erecta
12 – 26 Mar
9 Jun
6-8 wk
7 May
21 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Feb
30 May
6-8 wk
10 Apr
11 Jul
0 wk
21 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
30 Jan – 13 Feb
16 Apr
8-10 wk
10 Apr
11 Jun
0 wk
6 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
12 Mar – 9 Apr
27 May
6-10 wk
21 May
8 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
10 Apr
21 Jul
0 wk
4 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
26 Feb – 12 Mar
16 May
8-10 wk
7 May
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Feb
10 May
6-8 wk
10 Apr
21 Jun
0 wk
23 Apr
11 Jun
2 wk after