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