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Rel. frost
Last spring frost (0°C) 26 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 233 days 26 Mar – 14 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)
5 – 19 Feb
22 Jun
5-7 wk
26 Mar
27 Jul
0 wk
20 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Feb
4 Jul
4-6 wk
26 Mar
1 Aug
0 wk
20 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
11 Feb – 11 Mar
16 Apr
8-12 wk
6 May
11 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Feb
17 Jun
5-7 wk
26 Mar
22 Jul
0 wk
13 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
8 – 15 Apr
25 Jun
3-4 wk
6 May
16 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 Apr
14 Jun
4-5 wk
6 May
12 Jul
6 wk after
6 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
4 – 11 May
5 Jun
3-4 wk
1 Jun
26 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
1 – 29 Jan
7 Apr
8-12 wk
26 Mar
2 Jun
0 wk
8 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Mar
22 Jun
1 wk before
20 Mar
12 Jun
1 wk before
Maize
Zea mays
25 Mar – 1 Apr
15 Jun
3-4 wk
22 Apr
6 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Feb – 5 Mar
11 Jul
3-4 wk
26 Mar
1 Aug
0 wk
8 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 Mar
12 Jul
0 wk
13 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Feb
17 Jun
5-7 wk
26 Mar
22 Jul
0 wk
13 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
17 Feb – 3 Mar
14 Jun
4-6 wk
31 Mar
12 Jul
1 wk after
31 Mar
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Feb
27 Jun
5-7 wk
26 Mar
1 Aug
0 wk
20 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
8 – 15 Apr
10 Jul
3-4 wk
6 May
31 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Feb – 5 Mar
29 Jun
3-4 wk
26 Mar
20 Jul
0 wk
8 Apr
10 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
26 Feb – 5 Mar
16 Jul
3-4 wk
26 Mar
6 Aug
0 wk
20 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Feb
8 Jun
2-4 wk
13 Mar
22 Jun
2 wk before
13 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Mar
22 Jun
1 wk before
20 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
26 Feb – 5 Mar
31 Jul
3-4 wk
26 Mar
21 Aug
0 wk
6 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 Apr – 11 May
4-6 wk
8 Jun
11 wk after
Garden tomato
Solanum lycopersicum
25 Feb – 11 Mar
25 May
6-8 wk
22 Apr
6 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
25 Mar – 8 Apr
12 Jul
2-4 wk
22 Apr
26 Jul
4 wk after
6 May
16 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
26 Feb – 5 Mar
1 Jul
3-4 wk
26 Mar
22 Jul
0 wk
20 Mar
12 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
25 Mar – 8 Apr
18 Jun
4-6 wk
6 May
16 Jul
6 wk after
Lemon balm
Melissa officinalis
15 – 29 Jan
27 May
8-10 wk
26 Mar
22 Jul
0 wk
21 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
20 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
29 Jan – 12 Feb
10 Jun
6-8 wk
26 Mar
22 Jul
0 wk
20 Feb
12 Jul
5 wk before
Spearmint
Mentha spicata
1 – 29 Jan
27 May
8-12 wk
26 Mar
22 Jul
0 wk
21 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
26 Mar
21 Aug
0 wk
8 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
15 – 29 Jan
12 May
8-10 wk
26 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
15 – 29 Jan
17 May
8-10 wk
26 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
0 wk
21 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
0 wk
20 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
18 Dec – 15 Jan
13 Apr
10-14 wk
26 Mar
22 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
8 – 15 Apr
25 Jun
3-4 wk
6 May
16 Jul
6 wk after
Cornflower
Centaurea cyanus
26 Mar
22 Jul
0 wk
20 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
11 – 25 Feb
17 May
8-10 wk
22 Apr
12 Jul
4 wk after
Sweet William
Dianthus barbatus
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
31 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
25 Feb – 11 Mar
31 May
6-8 wk
22 Apr
12 Jul
4 wk after
8 Jun
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
20 Feb – 6 Mar
31 May
6-8 wk
17 Apr
12 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Feb – 24 Mar
14 Jun
4-8 wk
21 Apr
12 Jul
4 wk after
21 Apr
2 Jul
4 wk after
Foxglove
Digitalis purpurea
15 – 29 Jan
8-10 wk
26 Mar
0 wk
8 Apr
2 wk after
Busy lizzie
Impatiens walleriana
11 Feb – 11 Mar
12 Jul
8-12 wk
6 May
6 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
25 Feb – 11 Mar
10 Jun
6-8 wk
22 Apr
22 Jul
4 wk after
Hyacinth bean
Dolichos lablab
12 – 26 Apr
9 May
4-6 wk
24 May
6 Jun
8 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Jan
27 Apr
8-10 wk
26 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
26 Mar
7 Jul
0 wk
20 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
25 Feb – 11 Mar
21 May
6-8 wk
22 Apr
2 Jul
4 wk after
8 Jun
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Jan
27 Apr
8-12 wk
26 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
28 Jan – 25 Feb
28 Mar
8-12 wk
22 Apr
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
11 Feb – 11 Mar
11 May
8-12 wk
6 May
6 Jul
6 wk after
Globe amaranth
Gomphrena globosa
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
6 wk after
Corn poppy
Papaver rhoeas
26 Mar
22 Jul
0 wk
20 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Jan
17 May
8-12 wk
26 Mar
12 Jul
0 wk
31 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
25 Feb – 11 Mar
27 May
8-10 wk
6 May
22 Jul
6 wk after
Sweet pea
Lathyrus odoratus
29 Jan – 19 Feb
7 Jun
5-8 wk
26 Mar
12 Jul
0 wk
Stock
Matthiola incana
29 Jan – 12 Feb
10 Jun
6-8 wk
26 Mar
22 Jul
0 wk
8 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
29 Jan – 12 Feb
11 May
6-8 wk
26 Mar
22 Jun
0 wk
8 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
25 Mar – 8 Apr
3 Jun
4-6 wk
6 May
1 Jul
6 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Jan
27 May
8-10 wk
26 Mar
22 Jul
0 wk
31 Mar
12 Jul
1 wk after
Petunia
Petunia
28 Jan – 25 Feb
17 May
8-12 wk
22 Apr
12 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Jan – 12 Feb
11 May
6-8 wk
26 Mar
22 Jun
0 wk
6 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
11 – 25 Mar
24 Jun
4-6 wk
22 Apr
22 Jul
4 wk after
Common morning glory
Ipomoea purpurea
1 – 15 Apr
25 Jun
3-5 wk
6 May
16 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
11 – 25 Mar
14 Jun
4-6 wk
22 Apr
12 Jul
4 wk after
6 May
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 Mar
10 Jun
8-12 wk
24 May
5 Aug
8 wk after
Bee balm
Monarda didyma
1 – 29 Jan
27 Apr
8-12 wk
26 Mar
22 Jun
0 wk
21 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
29 Jan – 12 Feb
11 Apr
6-8 wk
26 Mar
23 May
0 wk
8 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
26 Mar
22 Jun
0 wk
20 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
0 wk
8 Feb
2 Jul
7 wk before
Bishop's flower
Ammi majus
12 – 26 Feb
14 Jun
4-6 wk
26 Mar
12 Jul
0 wk
8 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
11 – 25 Feb
13 Apr
10-12 wk
6 May
22 Jun
6 wk after
Sunflower
Helianthus annuus
25 Mar – 1 Apr
21 Jun
3-4 wk
22 Apr
12 Jul
4 wk after
21 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
25 Feb – 11 Mar
10 Jun
6-8 wk
22 Apr
22 Jul
4 wk after
6 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
16 Feb – 2 Mar
10 Jun
6-8 wk
13 Apr
22 Jul
3 wk after
6 May
12 Jul
6 wk after
Hollyhock
Alcea rosea
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
8 Apr
2 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Jan
27 Apr
8-12 wk
26 Mar
22 Jun
0 wk
21 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
25 Feb – 11 Mar
10 Jun
6-8 wk
22 Apr
22 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
0 wk
6 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
15 – 29 Jan
17 Apr
8-10 wk
26 Mar
12 Jun
0 wk
21 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
25 Feb – 25 Mar
4 Jun
6-10 wk
6 May
16 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
26 Mar
22 Jul
0 wk
20 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
11 – 25 Feb
17 May
8-10 wk
22 Apr
12 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
29 Jan – 12 Feb
11 May
6-8 wk
26 Mar
22 Jun
0 wk
13 Mar
12 Jun
2 wk before