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Rel. frost
Last spring frost (0°C) 24 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 241 days 24 Mar – 20 Nov
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)
3 – 17 Feb
21 Jun
5-7 wk
24 Mar
26 Jul
0 wk
18 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Feb
3 Jul
4-6 wk
24 Mar
31 Jul
0 wk
18 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
9 Feb – 9 Mar
16 Apr
8-12 wk
4 May
11 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Feb
16 Jun
5-7 wk
24 Mar
21 Jul
0 wk
11 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
6 – 13 Apr
24 Jun
3-4 wk
4 May
15 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
30 Mar – 6 Apr
13 Jun
4-5 wk
4 May
11 Jul
6 wk after
4 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
30 May – 6 Jun
3-4 wk
27 Jun
14 wk after
Onion
Allium cepa (Cepa-gruppen)
30 Dec – 27 Jan
6 Apr
8-12 wk
24 Mar
1 Jun
0 wk
6 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Mar
21 Jun
1 wk before
18 Mar
11 Jun
1 wk before
Maize
Zea mays
23 – 30 Mar
14 Jun
3-4 wk
20 Apr
5 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 Feb – 3 Mar
10 Jul
3-4 wk
24 Mar
31 Jul
0 wk
6 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
11 Jul
0 wk
11 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Feb
16 Jun
5-7 wk
24 Mar
21 Jul
0 wk
11 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
15 Feb – 1 Mar
10 Jun
4-6 wk
29 Mar
8 Jul
1 wk after
29 Mar
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Feb
26 Jun
5-7 wk
24 Mar
31 Jul
0 wk
18 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
6 – 13 Apr
10 Jul
3-4 wk
4 May
31 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Feb – 3 Mar
24 Jun
3-4 wk
24 Mar
15 Jul
0 wk
6 Apr
5 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Feb
28 Jun
4-6 wk
24 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
24 Feb – 3 Mar
15 Jul
3-4 wk
24 Mar
5 Aug
0 wk
18 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Feb
28 Jun
4-6 wk
24 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Feb
7 Jun
2-4 wk
11 Mar
21 Jun
2 wk before
11 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Mar
21 Jun
1 wk before
18 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
30 Jul
3-4 wk
24 Mar
20 Aug
0 wk
4 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
25 Apr – 9 May
4-6 wk
6 Jun
11 wk after
Garden tomato
Solanum lycopersicum
23 Feb – 9 Mar
24 May
6-8 wk
20 Apr
5 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 Mar – 6 Apr
12 Jul
2-4 wk
20 Apr
26 Jul
4 wk after
4 May
16 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Feb
28 Jun
4-6 wk
24 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
24 Feb – 3 Mar
30 Jun
3-4 wk
24 Mar
21 Jul
0 wk
18 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
23 Mar – 6 Apr
18 Jun
4-6 wk
4 May
16 Jul
6 wk after
Lemon balm
Melissa officinalis
13 – 27 Jan
26 May
8-10 wk
24 Mar
21 Jul
0 wk
19 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
18 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
27 Jan – 10 Feb
9 Jun
6-8 wk
24 Mar
21 Jul
0 wk
18 Feb
11 Jul
5 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
26 May
8-12 wk
24 Mar
21 Jul
0 wk
19 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
24 Mar
20 Aug
0 wk
6 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
13 – 27 Jan
11 May
8-10 wk
24 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
13 – 27 Jan
16 May
8-10 wk
24 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
27 Jan – 10 Feb
30 May
6-8 wk
24 Mar
11 Jul
0 wk
19 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
30 May
6-8 wk
24 Mar
11 Jul
0 wk
18 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
16 Dec – 13 Jan
12 Apr
10-14 wk
24 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
6 – 13 Apr
25 Jun
3-4 wk
4 May
16 Jul
6 wk after
Cornflower
Centaurea cyanus
24 Mar
21 Jul
0 wk
18 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
9 – 23 Feb
16 May
8-10 wk
20 Apr
11 Jul
4 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
0 wk
29 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
23 Feb – 9 Mar
30 May
6-8 wk
20 Apr
11 Jul
4 wk after
6 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
18 Feb – 4 Mar
30 May
6-8 wk
15 Apr
11 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Feb – 22 Mar
13 Jun
4-8 wk
19 Apr
11 Jul
4 wk after
19 Apr
1 Jul
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
0 wk
6 Apr
2 wk after
Busy lizzie
Impatiens walleriana
9 Feb – 9 Mar
11 Jul
8-12 wk
4 May
5 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
23 Feb – 9 Mar
9 Jun
6-8 wk
20 Apr
21 Jul
4 wk after
Hyacinth bean
Dolichos lablab
10 – 24 Apr
8 May
4-6 wk
22 May
5 Jun
8 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Jan
26 Apr
8-10 wk
24 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
24 Mar
6 Jul
0 wk
18 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
23 Feb – 9 Mar
20 May
6-8 wk
20 Apr
1 Jul
4 wk after
6 Jun
21 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
30 Dec – 27 Jan
26 Apr
8-12 wk
24 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
26 Jan – 23 Feb
27 Mar
8-12 wk
20 Apr
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
9 Feb – 9 Mar
11 May
8-12 wk
4 May
6 Jul
6 wk after
Globe amaranth
Gomphrena globosa
9 – 23 Mar
25 May
6-8 wk
4 May
6 Jul
6 wk after
Corn poppy
Papaver rhoeas
24 Mar
21 Jul
0 wk
18 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
30 Dec – 27 Jan
16 May
8-12 wk
24 Mar
11 Jul
0 wk
29 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
23 Feb – 9 Mar
26 May
8-10 wk
4 May
21 Jul
6 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
6 Jun
5-8 wk
24 Mar
11 Jul
0 wk
Stock
Matthiola incana
27 Jan – 10 Feb
9 Jun
6-8 wk
24 Mar
21 Jul
0 wk
6 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
10 May
6-8 wk
24 Mar
21 Jun
0 wk
6 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
23 Mar – 6 Apr
3 Jun
4-6 wk
4 May
1 Jul
6 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Jan
26 May
8-10 wk
24 Mar
21 Jul
0 wk
29 Mar
11 Jul
1 wk after
Petunia
Petunia
26 Jan – 23 Feb
16 May
8-12 wk
20 Apr
11 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Jan – 10 Feb
10 May
6-8 wk
24 Mar
21 Jun
0 wk
4 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
9 – 23 Mar
23 Jun
4-6 wk
20 Apr
21 Jul
4 wk after
Common morning glory
Ipomoea purpurea
30 Mar – 13 Apr
25 Jun
3-5 wk
4 May
16 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 Mar
13 Jun
4-6 wk
20 Apr
11 Jul
4 wk after
4 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
27 Feb – 27 Mar
10 Jun
8-12 wk
22 May
5 Aug
8 wk after
Bee balm
Monarda didyma
30 Dec – 27 Jan
26 Apr
8-12 wk
24 Mar
21 Jun
0 wk
19 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
10 Apr
6-8 wk
24 Mar
22 May
0 wk
6 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
24 Mar
21 Jun
0 wk
18 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
27 Jan – 10 Feb
30 May
6-8 wk
24 Mar
11 Jul
0 wk
6 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
10 – 24 Feb
13 Jun
4-6 wk
24 Mar
11 Jul
0 wk
6 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
9 – 23 Feb
12 Apr
10-12 wk
4 May
21 Jun
6 wk after
Sunflower
Helianthus annuus
23 – 30 Mar
20 Jun
3-4 wk
20 Apr
11 Jul
4 wk after
19 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
23 Feb – 9 Mar
9 Jun
6-8 wk
20 Apr
21 Jul
4 wk after
4 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
14 – 28 Feb
9 Jun
6-8 wk
11 Apr
21 Jul
3 wk after
4 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
0 wk
6 Apr
2 wk after
Alpine delphinium
Delphinium elatum
30 Dec – 27 Jan
26 Apr
8-12 wk
24 Mar
21 Jun
0 wk
19 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
23 Feb – 9 Mar
9 Jun
6-8 wk
20 Apr
21 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
27 Jan – 10 Feb
30 May
6-8 wk
24 Mar
11 Jul
0 wk
4 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Jan
16 Apr
8-10 wk
24 Mar
11 Jun
0 wk
19 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
23 Feb – 23 Mar
4 Jun
6-10 wk
4 May
16 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
24 Mar
21 Jul
0 wk
18 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
9 – 23 Feb
16 May
8-10 wk
20 Apr
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
27 Jan – 10 Feb
10 May
6-8 wk
24 Mar
21 Jun
0 wk
11 Mar
11 Jun
2 wk before