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Method
Rel. frost
Last spring frost (0°C) 6 Apr Normal year · 20 years of data
Frost-free season 227 days 6 Apr – 19 Nov
Probability that frost is over

50% = 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)
16 Feb – 2 Mar
19 Jun
5-7 wk
6 Apr
24 Jul
0 wk
31 Mar
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Feb – 9 Mar
1 Jul
4-6 wk
6 Apr
29 Jul
0 wk
31 Mar
19 Jul
1 wk before
Chili pepper
Capsicum annuum
22 Feb – 22 Mar
17 Apr
8-12 wk
17 May
12 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 Feb – 2 Mar
14 Jun
5-7 wk
6 Apr
19 Jul
0 wk
24 Mar
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
19 – 26 Apr
25 Jun
3-4 wk
17 May
16 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 Apr
11 Jun
4-5 wk
17 May
9 Jul
6 wk after
17 May
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
12 – 19 Jun
3-4 wk
10 Jul
14 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Jan – 9 Feb
4 Apr
8-12 wk
6 Apr
30 May
0 wk
19 Apr
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 Mar
19 Jun
1 wk before
31 Mar
9 Jun
1 wk before
Maize
Zea mays
5 – 12 Apr
15 Jun
3-4 wk
3 May
6 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Mar
8 Jul
3-4 wk
6 Apr
29 Jul
0 wk
19 Apr
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 Apr
9 Jul
0 wk
24 Mar
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 Feb – 2 Mar
14 Jun
5-7 wk
6 Apr
19 Jul
0 wk
24 Mar
9 Jul
2 wk before
Potato
Solanum tuberosum
28 Feb – 14 Mar
11 Jun
4-6 wk
11 Apr
9 Jul
1 wk after
11 Apr
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 Feb – 2 Mar
24 Jun
5-7 wk
6 Apr
29 Jul
0 wk
31 Mar
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
19 – 26 Apr
11 Jul
3-4 wk
17 May
1 Aug
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Mar
30 Jun
3-4 wk
6 Apr
21 Jul
0 wk
19 Apr
11 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Feb – 9 Mar
26 Jun
4-6 wk
6 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Mar
13 Jul
3-4 wk
6 Apr
3 Aug
0 wk
31 Mar
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Feb – 9 Mar
26 Jun
4-6 wk
6 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
5 Jun
2-4 wk
24 Mar
19 Jun
2 wk before
24 Mar
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 Mar
19 Jun
1 wk before
31 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
9 – 16 Mar
28 Jul
3-4 wk
6 Apr
18 Aug
0 wk
17 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 May
4-6 wk
19 Jun
11 wk after
Garden tomato
Solanum lycopersicum
8 – 22 Mar
25 May
6-8 wk
3 May
6 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 Apr
13 Jul
2-4 wk
3 May
27 Jul
4 wk after
17 May
17 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Feb – 9 Mar
26 Jun
4-6 wk
6 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Mar
28 Jun
3-4 wk
6 Apr
19 Jul
0 wk
31 Mar
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
5 – 19 Apr
19 Jun
4-6 wk
17 May
17 Jul
6 wk after
Lemon balm
Melissa officinalis
26 Jan – 9 Feb
24 May
8-10 wk
6 Apr
19 Jul
0 wk
2 May
9 Jul
4 wk after
Dill
Anethum graveolens
31 Mar
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
9 – 23 Feb
7 Jun
6-8 wk
6 Apr
19 Jul
0 wk
3 Mar
9 Jul
5 wk before
Spearmint
Mentha spicata
12 Jan – 9 Feb
24 May
8-12 wk
6 Apr
19 Jul
0 wk
2 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
6 Apr
18 Aug
0 wk
19 Apr
8 Aug
2 wk after
Garden sage
Salvia officinalis
26 Jan – 9 Feb
9 May
8-10 wk
6 Apr
4 Jul
0 wk
Common thyme
Thymus vulgaris
26 Jan – 9 Feb
14 May
8-10 wk
6 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Feb
28 May
6-8 wk
6 Apr
9 Jul
0 wk
2 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Feb
28 May
6-8 wk
6 Apr
9 Jul
0 wk
31 Mar
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
29 Dec – 26 Jan
10 Apr
10-14 wk
6 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
19 – 26 Apr
26 Jun
3-4 wk
17 May
17 Jul
6 wk after
Cornflower
Centaurea cyanus
6 Apr
19 Jul
0 wk
31 Mar
9 Jul
1 wk before
Statice
Limonium sinuatum
22 Feb – 8 Mar
14 May
8-10 wk
3 May
9 Jul
4 wk after
Sweet William
Dianthus barbatus
9 – 23 Feb
6-8 wk
6 Apr
0 wk
11 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Mar
28 May
6-8 wk
3 May
9 Jul
4 wk after
19 Jun
29 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Mar
28 May
6-8 wk
28 Apr
9 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 Mar – 4 Apr
11 Jun
4-8 wk
2 May
9 Jul
4 wk after
2 May
29 Jun
4 wk after
Foxglove
Digitalis purpurea
26 Jan – 9 Feb
8-10 wk
6 Apr
0 wk
19 Apr
2 wk after
Busy lizzie
Impatiens walleriana
22 Feb – 22 Mar
9 Jul
8-12 wk
17 May
3 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Mar
7 Jun
6-8 wk
3 May
19 Jul
4 wk after
Hyacinth bean
Dolichos lablab
23 Apr – 7 May
9 May
4-6 wk
4 Jun
6 Jun
8 wk after
Chinese lantern
Physalis alkekengi
26 Jan – 9 Feb
24 Apr
8-10 wk
6 Apr
19 Jun
0 wk
Love in a mist
Nigella damascena
6 Apr
4 Jul
0 wk
31 Mar
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Mar
18 May
6-8 wk
3 May
29 Jun
4 wk after
19 Jun
19 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
12 Jan – 9 Feb
24 Apr
8-12 wk
6 Apr
19 Jun
0 wk
Cardoon
Cynara cardunculus
8 Feb – 8 Mar
25 Mar
8-12 wk
3 May
20 May
4 wk after
Regal-foxtail
Ptilotus nobilis
22 Feb – 22 Mar
12 May
8-12 wk
17 May
7 Jul
6 wk after
Globe amaranth
Gomphrena globosa
22 Mar – 5 Apr
26 May
6-8 wk
17 May
7 Jul
6 wk after
Corn poppy
Papaver rhoeas
6 Apr
19 Jul
0 wk
31 Mar
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Jan – 9 Feb
14 May
8-12 wk
6 Apr
9 Jul
0 wk
11 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
8 – 22 Mar
24 May
8-10 wk
17 May
19 Jul
6 wk after
Sweet pea
Lathyrus odoratus
9 Feb – 2 Mar
4 Jun
5-8 wk
6 Apr
9 Jul
0 wk
Stock
Matthiola incana
9 – 23 Feb
7 Jun
6-8 wk
6 Apr
19 Jul
0 wk
19 Apr
9 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Feb
8 May
6-8 wk
6 Apr
19 Jun
0 wk
19 Apr
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
5 – 19 Apr
4 Jun
4-6 wk
17 May
2 Jul
6 wk after
Garden pansy
Viola × wittrockiana
26 Jan – 9 Feb
24 May
8-10 wk
6 Apr
19 Jul
0 wk
11 Apr
9 Jul
1 wk after
Petunia
Petunia
8 Feb – 8 Mar
14 May
8-12 wk
3 May
9 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
9 – 23 Feb
8 May
6-8 wk
6 Apr
19 Jun
0 wk
17 May
9 Jun
6 wk after
Common zinnia
Zinnia elegans
22 Mar – 5 Apr
21 Jun
4-6 wk
3 May
19 Jul
4 wk after
Common morning glory
Ipomoea purpurea
12 – 26 Apr
26 Jun
3-5 wk
17 May
17 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
22 Mar – 5 Apr
11 Jun
4-6 wk
3 May
9 Jul
4 wk after
17 May
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
12 Mar – 9 Apr
11 Jun
8-12 wk
4 Jun
6 Aug
8 wk after
Bee balm
Monarda didyma
12 Jan – 9 Feb
24 Apr
8-12 wk
6 Apr
19 Jun
0 wk
2 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Feb
8 Apr
6-8 wk
6 Apr
20 May
0 wk
19 Apr
10 May
2 wk after
Safflower
Carthamus tinctorius
6 Apr
19 Jun
0 wk
31 Mar
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Feb
28 May
6-8 wk
6 Apr
9 Jul
0 wk
19 Feb
29 Jun
7 wk before
Bishop's flower
Ammi majus
23 Feb – 9 Mar
11 Jun
4-6 wk
6 Apr
9 Jul
0 wk
19 Apr
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
22 Feb – 8 Mar
10 Apr
10-12 wk
17 May
19 Jun
6 wk after
Sunflower
Helianthus annuus
5 – 12 Apr
18 Jun
3-4 wk
3 May
9 Jul
4 wk after
2 May
29 Jun
4 wk after
China aster
Callistephus chinensis
8 – 22 Mar
7 Jun
6-8 wk
3 May
19 Jul
4 wk after
17 May
9 Jul
6 wk after
Annual phlox
Phlox drummondii
27 Feb – 13 Mar
7 Jun
6-8 wk
24 Apr
19 Jul
3 wk after
17 May
9 Jul
6 wk after
Hollyhock
Alcea rosea
9 – 23 Feb
6-8 wk
6 Apr
0 wk
19 Apr
2 wk after
Alpine delphinium
Delphinium elatum
12 Jan – 9 Feb
24 Apr
8-12 wk
6 Apr
19 Jun
0 wk
2 May
9 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 Mar
7 Jun
6-8 wk
3 May
19 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
9 – 23 Feb
28 May
6-8 wk
6 Apr
9 Jul
0 wk
17 May
29 Jun
6 wk after
Wood sage
Salvia nemorosa
26 Jan – 9 Feb
14 Apr
8-10 wk
6 Apr
9 Jun
0 wk
2 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
8 Mar – 5 Apr
5 Jun
6-10 wk
17 May
17 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
6 Apr
19 Jul
0 wk
31 Mar
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Feb – 8 Mar
14 May
8-10 wk
3 May
9 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
9 – 23 Feb
8 May
6-8 wk
6 Apr
19 Jun
0 wk
24 Mar
9 Jun
2 wk before