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Rel. frost
Last spring frost (0°C) 29 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 200 days 29 Mar – 15 Oct
Probability that frost is over

10% = 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)
8 – 22 Feb
19 Jun
5-7 wk
29 Mar
24 Jul
0 wk
22 Mar
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
15 Feb – 1 Mar
1 Jul
4-6 wk
29 Mar
29 Jul
0 wk
22 Mar
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
15 Jan – 12 Feb
9 Apr
8-12 wk
9 Apr
4 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Feb
14 Jun
5-7 wk
29 Mar
19 Jul
0 wk
17 Mar
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
20 – 27 Mar
3 Jun
3-4 wk
17 Apr
24 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
30 Mar – 6 Apr
11 Jun
4-5 wk
4 May
9 Jul
5 wk after
4 May
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
13 – 20 Apr
12 May
3-4 wk
11 May
2 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Jan – 1 Feb
4 Apr
8-12 wk
29 Mar
30 May
0 wk
8 Apr
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Mar
19 Jun
1 wk before
22 Mar
9 Jun
1 wk before
Maize
Zea mays
Fleece
12 – 19 Mar
24 May
3-4 wk
9 Apr
14 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Mar
8 Jul
3-4 wk
4 Apr
29 Jul
1 wk after
8 Apr
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 Mar
9 Jul
0 wk
17 Mar
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Feb
14 Jun
5-7 wk
29 Mar
19 Jul
0 wk
17 Mar
9 Jul
2 wk before
Potato
Solanum tuberosum
20 Feb – 6 Mar
8 Jun
4-6 wk
3 Apr
6 Jul
1 wk after
3 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Feb
24 Jun
5-7 wk
29 Mar
29 Jul
0 wk
22 Mar
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
6 – 13 Apr
8 Jun
3-4 wk
4 May
29 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Mar
20 Jun
3-4 wk
4 Apr
11 Jul
1 wk after
8 Apr
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 Feb – 1 Mar
26 Jun
4-6 wk
29 Mar
24 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 Mar
13 Jul
3-4 wk
29 Mar
3 Aug
0 wk
22 Mar
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 Feb – 1 Mar
26 Jun
4-6 wk
29 Mar
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Feb – 3 Mar
5 Jun
2-4 wk
17 Mar
19 Jun
2 wk before
17 Mar
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Mar
19 Jun
1 wk before
22 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
1 – 8 Mar
28 Jul
3-4 wk
29 Mar
18 Aug
0 wk
11 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
25 Apr – 9 May
4-6 wk
6 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
12 – 26 Feb
3 May
6-8 wk
9 Apr
14 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
20 Mar – 3 Apr
10 Jun
2-4 wk
17 Apr
24 Jun
3 wk after
4 May
14 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 Feb – 1 Mar
26 Jun
4-6 wk
29 Mar
24 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 Mar
28 Jun
3-4 wk
29 Mar
19 Jul
0 wk
22 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
23 Mar – 6 Apr
17 May
4-6 wk
4 May
14 Jun
5 wk after
Lemon balm
Melissa officinalis
18 Jan – 1 Feb
24 May
8-10 wk
29 Mar
19 Jul
0 wk
19 Apr
9 Jul
3 wk after
Dill
Anethum graveolens
22 Mar
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
1 – 15 Feb
7 Jun
6-8 wk
29 Mar
19 Jul
0 wk
28 Feb
9 Jul
4 wk before
Spearmint
Mentha spicata
4 Jan – 1 Feb
24 May
8-12 wk
29 Mar
19 Jul
0 wk
19 Apr
9 Jul
3 wk after
Coriander
Coriandrum sativum
29 Mar
18 Aug
0 wk
8 Apr
8 Aug
1 wk after
Garden sage
Salvia officinalis
24 Jan – 7 Feb
9 May
8-10 wk
4 Apr
4 Jul
1 wk after
Common thyme
Thymus vulgaris
18 Jan – 1 Feb
14 May
8-10 wk
29 Mar
9 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Feb
28 May
6-8 wk
29 Mar
9 Jul
0 wk
19 Apr
29 Jun
3 wk after
Parsley
Petroselinum crispum
1 – 15 Feb
28 May
6-8 wk
29 Mar
9 Jul
0 wk
22 Mar
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
27 Dec – 24 Jan
10 Apr
10-14 wk
4 Apr
19 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
6 – 13 Apr
24 May
3-4 wk
4 May
14 Jun
5 wk after
Cornflower
Centaurea cyanus
29 Mar
19 Jul
0 wk
22 Mar
9 Jul
1 wk before
Statice
Limonium sinuatum
6 – 20 Feb
18 Apr
8-10 wk
17 Apr
13 Jun
3 wk after
Sweet William
Dianthus barbatus
1 – 15 Feb
6-8 wk
29 Mar
0 wk
3 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
20 Feb – 6 Mar
2 May
6-8 wk
17 Apr
13 Jun
3 wk after
6 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
15 Feb – 1 Mar
8 May
6-8 wk
12 Apr
19 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Feb – 22 Mar
22 May
4-8 wk
19 Apr
19 Jun
3 wk after
19 Apr
9 Jun
3 wk after
Foxglove
Digitalis purpurea
18 Jan – 1 Feb
8-10 wk
29 Mar
0 wk
8 Apr
1 wk after
Busy lizzie
Impatiens walleriana
9 Feb – 9 Mar
12 Jun
8-12 wk
4 May
7 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
20 Feb – 6 Mar
12 May
6-8 wk
17 Apr
23 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
23 Mar – 6 Apr
17 Apr
4-6 wk
4 May
15 May
5 wk after
Chinese lantern
Physalis alkekengi
24 Jan – 7 Feb
24 Apr
8-10 wk
4 Apr
19 Jun
1 wk after
Love in a mist
Nigella damascena
29 Mar
4 Jul
0 wk
22 Mar
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
20 Feb – 6 Mar
22 Apr
6-8 wk
17 Apr
3 Jun
3 wk after
6 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
10 Jan – 7 Feb
24 Apr
8-12 wk
4 Apr
19 Jun
1 wk after
Cardoon
Cynara cardunculus
23 Jan – 20 Feb
25 Mar
8-12 wk
17 Apr
20 May
3 wk after
Regal-foxtail
Ptilotus nobilis
9 Feb – 9 Mar
9 Apr
8-12 wk
4 May
4 Jun
5 wk after
Globe amaranth
Gomphrena globosa
9 – 23 Mar
23 Apr
6-8 wk
4 May
4 Jun
5 wk after
Corn poppy
Papaver rhoeas
29 Mar
19 Jul
0 wk
22 Mar
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
4 Jan – 1 Feb
14 May
8-12 wk
29 Mar
9 Jul
0 wk
3 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
23 Feb – 9 Mar
28 Apr
8-10 wk
4 May
23 Jun
5 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Feb
4 Jun
5-8 wk
29 Mar
9 Jul
0 wk
Stock
Matthiola incana
1 – 15 Feb
7 Jun
6-8 wk
29 Mar
19 Jul
0 wk
8 Apr
9 Jul
1 wk after
Wormwood
Artemisia absinthium
1 – 15 Feb
8 May
6-8 wk
29 Mar
19 Jun
0 wk
8 Apr
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
23 Mar – 6 Apr
2 May
4-6 wk
4 May
30 May
5 wk after
Garden pansy
Viola × wittrockiana
18 Jan – 1 Feb
24 May
8-10 wk
29 Mar
19 Jul
0 wk
3 Apr
9 Jul
1 wk after
Petunia
Petunia
23 Jan – 20 Feb
18 Apr
8-12 wk
17 Apr
13 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Feb
8 May
6-8 wk
4 Apr
19 Jun
1 wk after
4 May
9 Jun
5 wk after
Common zinnia
Zinnia elegans
6 – 20 Mar
25 May
4-6 wk
17 Apr
22 Jun
3 wk after
Common morning glory
Ipomoea purpurea
30 Mar – 13 Apr
24 May
3-5 wk
4 May
14 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
6 – 20 Mar
22 May
4-6 wk
17 Apr
19 Jun
3 wk after
4 May
9 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
21 Feb – 21 Mar
9 May
8-12 wk
16 May
4 Jul
7 wk after
Bee balm
Monarda didyma
4 Jan – 1 Feb
24 Apr
8-12 wk
29 Mar
19 Jun
0 wk
19 Apr
9 Jun
3 wk after
Yarrow
Achillea millefolium
1 – 15 Feb
8 Apr
6-8 wk
29 Mar
20 May
0 wk
8 Apr
10 May
1 wk after
Safflower
Carthamus tinctorius
29 Mar
19 Jun
0 wk
22 Mar
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Feb
28 May
6-8 wk
29 Mar
9 Jul
0 wk
18 Feb
29 Jun
6 wk before
Bishop's flower
Ammi majus
15 Feb – 1 Mar
11 Jun
4-6 wk
29 Mar
9 Jul
0 wk
8 Apr
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
9 – 23 Feb
14 Mar
10-12 wk
4 May
23 May
5 wk after
Sunflower
Helianthus annuus
20 – 27 Mar
18 Jun
3-4 wk
17 Apr
9 Jul
3 wk after
19 Apr
29 Jun
3 wk after
China aster
Callistephus chinensis
20 Feb – 6 Mar
7 Jun
6-8 wk
17 Apr
19 Jul
3 wk after
4 May
9 Jul
5 wk after
Annual phlox
Phlox drummondii
12 – 26 Feb
12 May
6-8 wk
9 Apr
23 Jun
2 wk after
4 May
13 Jun
5 wk after
Hollyhock
Alcea rosea
1 – 15 Feb
6-8 wk
29 Mar
0 wk
8 Apr
1 wk after
Alpine delphinium
Delphinium elatum
4 Jan – 1 Feb
24 Apr
8-12 wk
29 Mar
19 Jun
0 wk
19 Apr
9 Jun
3 wk after
African marigold
Tagetes erecta
20 Feb – 6 Mar
12 May
6-8 wk
17 Apr
23 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Feb
28 May
6-8 wk
4 Apr
9 Jul
1 wk after
4 May
29 Jun
5 wk after
Wood sage
Salvia nemorosa
18 Jan – 1 Feb
14 Apr
8-10 wk
29 Mar
9 Jun
0 wk
19 Apr
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
23 Feb – 23 Mar
3 May
6-10 wk
4 May
14 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
29 Mar
19 Jul
0 wk
22 Mar
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
6 – 20 Feb
14 May
8-10 wk
17 Apr
9 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
1 – 15 Feb
8 May
6-8 wk
29 Mar
19 Jun
0 wk
17 Mar
9 Jun
2 wk before