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Rel. frost
Last spring frost (0°C) 16 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 234 days 16 Mar – 5 Nov
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)
26 Jan – 9 Feb
21 Jun
5-7 wk
16 Mar
26 Jul
0 wk
10 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
2 – 16 Feb
3 Jul
4-6 wk
16 Mar
31 Jul
0 wk
10 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
18 Jan – 15 Feb
19 Mar
8-12 wk
12 Apr
14 May
4 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
26 Jan – 9 Feb
16 Jun
5-7 wk
16 Mar
21 Jul
0 wk
3 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
29 Mar – 5 Apr
13 May
3-4 wk
26 Apr
3 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 Mar
13 Jun
4-5 wk
26 Apr
11 Jul
6 wk after
26 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
8 – 15 Apr
23 May
3-4 wk
6 May
13 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Dec – 19 Jan
6 Apr
8-12 wk
16 Mar
1 Jun
0 wk
29 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 Mar
21 Jun
1 wk before
10 Mar
11 Jun
1 wk before
Maize
Zea mays
15 – 22 Mar
3 May
3-4 wk
12 Apr
24 May
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Feb
10 Jul
3-4 wk
16 Mar
31 Jul
0 wk
29 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 Mar
11 Jul
0 wk
3 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
26 Jan – 9 Feb
16 Jun
5-7 wk
16 Mar
21 Jul
0 wk
3 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
7 – 21 Feb
9 Jun
4-6 wk
21 Mar
7 Jul
1 wk after
21 Mar
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
26 Jan – 9 Feb
26 Jun
5-7 wk
16 Mar
31 Jul
0 wk
10 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
29 Mar – 5 Apr
11 Jun
3-4 wk
26 Apr
2 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Feb
21 Jun
3-4 wk
16 Mar
12 Jul
0 wk
29 Mar
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
2 – 16 Feb
28 Jun
4-6 wk
16 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
16 – 23 Feb
15 Jul
3-4 wk
16 Mar
5 Aug
0 wk
10 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
2 – 16 Feb
28 Jun
4-6 wk
16 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Feb
7 Jun
2-4 wk
3 Mar
21 Jun
2 wk before
3 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 Mar
21 Jun
1 wk before
10 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
16 – 23 Feb
30 Jul
3-4 wk
16 Mar
20 Aug
0 wk
24 Feb
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
17 Apr – 1 May
4-6 wk
29 May
11 wk after
Garden tomato
Solanum lycopersicum
15 Feb – 1 Mar
12 Apr
6-8 wk
12 Apr
24 May
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 Mar
13 Jun
2-4 wk
12 Apr
27 Jun
4 wk after
26 Apr
17 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
2 – 16 Feb
28 Jun
4-6 wk
16 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
16 – 23 Feb
30 Jun
3-4 wk
16 Mar
21 Jul
0 wk
10 Mar
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
15 – 29 Mar
20 May
4-6 wk
26 Apr
17 Jun
6 wk after
Lemon balm
Melissa officinalis
5 – 19 Jan
26 May
8-10 wk
16 Mar
21 Jul
0 wk
11 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
10 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
19 Jan – 2 Feb
9 Jun
6-8 wk
16 Mar
21 Jul
0 wk
10 Feb
11 Jul
5 wk before
Spearmint
Mentha spicata
22 Dec – 19 Jan
26 May
8-12 wk
16 Mar
21 Jul
0 wk
11 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
16 Mar
20 Aug
0 wk
29 Mar
10 Aug
2 wk after
Garden sage
Salvia officinalis
5 – 19 Jan
11 May
8-10 wk
16 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
5 – 19 Jan
16 May
8-10 wk
16 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
19 Jan – 2 Feb
30 May
6-8 wk
16 Mar
11 Jul
0 wk
11 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
19 Jan – 2 Feb
30 May
6-8 wk
16 Mar
11 Jul
0 wk
10 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
8 Dec – 5 Jan
12 Apr
10-14 wk
16 Mar
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
29 Mar – 5 Apr
27 May
3-4 wk
26 Apr
17 Jun
6 wk after
Cornflower
Centaurea cyanus
16 Mar
21 Jul
0 wk
10 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
1 – 15 Feb
3 May
8-10 wk
12 Apr
28 Jun
4 wk after
Sweet William
Dianthus barbatus
19 Jan – 2 Feb
6-8 wk
16 Mar
0 wk
21 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 Feb – 1 Mar
17 May
6-8 wk
12 Apr
28 Jun
4 wk after
29 May
18 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Feb
25 May
6-8 wk
7 Apr
6 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
14 Feb – 14 Mar
8 Jun
4-8 wk
11 Apr
6 Jul
4 wk after
11 Apr
26 Jun
4 wk after
Foxglove
Digitalis purpurea
5 – 19 Jan
8-10 wk
16 Mar
0 wk
29 Mar
2 wk after
Busy lizzie
Impatiens walleriana
1 Feb – 1 Mar
23 Jun
8-12 wk
26 Apr
18 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
15 Feb – 1 Mar
27 May
6-8 wk
12 Apr
8 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
15 – 29 Mar
20 Apr
4-6 wk
26 Apr
18 May
6 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Jan
26 Apr
8-10 wk
16 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
16 Mar
6 Jul
0 wk
10 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
15 Feb – 1 Mar
7 May
6-8 wk
12 Apr
18 Jun
4 wk after
29 May
8 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
22 Dec – 19 Jan
26 Apr
8-12 wk
16 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
18 Jan – 15 Feb
27 Mar
8-12 wk
12 Apr
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
1 Feb – 1 Mar
12 Apr
8-12 wk
26 Apr
7 Jun
6 wk after
Globe amaranth
Gomphrena globosa
1 – 15 Mar
26 Apr
6-8 wk
26 Apr
7 Jun
6 wk after
Corn poppy
Papaver rhoeas
16 Mar
21 Jul
0 wk
10 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
22 Dec – 19 Jan
16 May
8-12 wk
16 Mar
11 Jul
0 wk
21 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
15 Feb – 1 Mar
13 May
8-10 wk
26 Apr
8 Jul
6 wk after
Sweet pea
Lathyrus odoratus
19 Jan – 9 Feb
6 Jun
5-8 wk
16 Mar
11 Jul
0 wk
Stock
Matthiola incana
19 Jan – 2 Feb
9 Jun
6-8 wk
16 Mar
21 Jul
0 wk
29 Mar
11 Jul
2 wk after
Wormwood
Artemisia absinthium
19 Jan – 2 Feb
10 May
6-8 wk
16 Mar
21 Jun
0 wk
29 Mar
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
15 – 29 Mar
5 May
4-6 wk
26 Apr
2 Jun
6 wk after
Garden pansy
Viola × wittrockiana
5 – 19 Jan
26 May
8-10 wk
16 Mar
21 Jul
0 wk
21 Mar
11 Jul
1 wk after
Petunia
Petunia
18 Jan – 15 Feb
3 May
8-12 wk
12 Apr
28 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Jan – 2 Feb
10 May
6-8 wk
16 Mar
21 Jun
0 wk
26 Apr
11 Jun
6 wk after
Common zinnia
Zinnia elegans
1 – 15 Mar
5 Jun
4-6 wk
12 Apr
3 Jul
4 wk after
Common morning glory
Ipomoea purpurea
22 Mar – 5 Apr
27 May
3-5 wk
26 Apr
17 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 Mar
8 Jun
4-6 wk
12 Apr
6 Jul
4 wk after
26 Apr
26 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
19 Feb – 19 Mar
12 May
8-12 wk
14 May
7 Jul
8 wk after
Bee balm
Monarda didyma
22 Dec – 19 Jan
26 Apr
8-12 wk
16 Mar
21 Jun
0 wk
11 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
19 Jan – 2 Feb
10 Apr
6-8 wk
16 Mar
22 May
0 wk
29 Mar
12 May
2 wk after
Safflower
Carthamus tinctorius
16 Mar
21 Jun
0 wk
10 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
19 Jan – 2 Feb
30 May
6-8 wk
16 Mar
11 Jul
0 wk
29 Jan
1 Jul
7 wk before
Bishop's flower
Ammi majus
2 – 16 Feb
13 Jun
4-6 wk
16 Mar
11 Jul
0 wk
29 Mar
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
1 – 15 Feb
25 Mar
10-12 wk
26 Apr
3 Jun
6 wk after
Sunflower
Helianthus annuus
15 – 22 Mar
20 Jun
3-4 wk
12 Apr
11 Jul
4 wk after
11 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
15 Feb – 1 Mar
9 Jun
6-8 wk
12 Apr
21 Jul
4 wk after
26 Apr
11 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Feb
27 May
6-8 wk
3 Apr
8 Jul
3 wk after
26 Apr
28 Jun
6 wk after
Hollyhock
Alcea rosea
19 Jan – 2 Feb
6-8 wk
16 Mar
0 wk
29 Mar
2 wk after
Alpine delphinium
Delphinium elatum
22 Dec – 19 Jan
26 Apr
8-12 wk
16 Mar
21 Jun
0 wk
11 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
15 Feb – 1 Mar
27 May
6-8 wk
12 Apr
8 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
19 Jan – 2 Feb
30 May
6-8 wk
16 Mar
11 Jul
0 wk
26 Apr
1 Jul
6 wk after
Wood sage
Salvia nemorosa
5 – 19 Jan
16 Apr
8-10 wk
16 Mar
11 Jun
0 wk
11 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
15 Feb – 15 Mar
6 May
6-10 wk
26 Apr
17 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
16 Mar
21 Jul
0 wk
10 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
1 – 15 Feb
16 May
8-10 wk
12 Apr
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
19 Jan – 2 Feb
10 May
6-8 wk
16 Mar
21 Jun
0 wk
3 Mar
11 Jun
2 wk before