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Rel. frost
Last spring frost (0°C) 1 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 216 days 1 Apr – 3 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)
11 – 25 Feb
18 Jun
5-7 wk
1 Apr
23 Jul
0 wk
25 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Feb – 4 Mar
30 Jun
4-6 wk
1 Apr
28 Jul
0 wk
25 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
12 Feb – 12 Mar
14 Apr
8-12 wk
7 May
9 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Feb
13 Jun
5-7 wk
1 Apr
18 Jul
0 wk
20 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
9 – 16 Apr
17 Jun
3-4 wk
7 May
8 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 Apr
10 Jun
4-5 wk
7 May
8 Jul
5 wk after
7 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
30 Apr – 7 May
26 May
3-4 wk
28 May
16 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Jan – 4 Feb
3 Apr
8-12 wk
1 Apr
29 May
0 wk
11 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 Mar
18 Jun
1 wk before
25 Mar
8 Jun
1 wk before
Maize
Zea mays
23 – 30 Mar
7 Jun
3-4 wk
20 Apr
28 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Mar
7 Jul
3-4 wk
7 Apr
28 Jul
1 wk after
11 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 Apr
8 Jul
0 wk
20 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Feb
13 Jun
5-7 wk
1 Apr
18 Jul
0 wk
20 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
23 Feb – 9 Mar
8 Jun
4-6 wk
6 Apr
6 Jul
1 wk after
6 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Feb
23 Jun
5-7 wk
1 Apr
28 Jul
0 wk
25 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
9 – 16 Apr
30 Jun
3-4 wk
7 May
21 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Mar
18 Jun
3-4 wk
7 Apr
9 Jul
1 wk after
11 Apr
29 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Feb – 4 Mar
25 Jun
4-6 wk
1 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 Mar
12 Jul
3-4 wk
1 Apr
2 Aug
0 wk
25 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Feb – 4 Mar
25 Jun
4-6 wk
1 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Feb – 6 Mar
4 Jun
2-4 wk
20 Mar
18 Jun
2 wk before
20 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Mar
18 Jun
1 wk before
25 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
4 – 11 Mar
27 Jul
3-4 wk
1 Apr
17 Aug
0 wk
14 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
28 Apr – 12 May
4-6 wk
9 Jun
10 wk after
Garden tomato
Solanum lycopersicum
23 Feb – 9 Mar
17 May
6-8 wk
20 Apr
28 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 Mar – 6 Apr
2 Jul
2-4 wk
20 Apr
16 Jul
3 wk after
7 May
6 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Feb – 4 Mar
25 Jun
4-6 wk
1 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 Mar
27 Jun
3-4 wk
1 Apr
18 Jul
0 wk
25 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
26 Mar – 9 Apr
8 Jun
4-6 wk
7 May
6 Jul
5 wk after
Lemon balm
Melissa officinalis
21 Jan – 4 Feb
23 May
8-10 wk
1 Apr
18 Jul
0 wk
22 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
25 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
4 – 18 Feb
6 Jun
6-8 wk
1 Apr
18 Jul
0 wk
3 Mar
8 Jul
4 wk before
Spearmint
Mentha spicata
7 Jan – 4 Feb
23 May
8-12 wk
1 Apr
18 Jul
0 wk
22 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
1 Apr
17 Aug
0 wk
11 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
27 Jan – 10 Feb
8 May
8-10 wk
7 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
21 Jan – 4 Feb
13 May
8-10 wk
1 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Feb
27 May
6-8 wk
1 Apr
8 Jul
0 wk
22 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
4 – 18 Feb
27 May
6-8 wk
1 Apr
8 Jul
0 wk
25 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
30 Dec – 27 Jan
9 Apr
10-14 wk
7 Apr
18 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
9 – 16 Apr
15 Jun
3-4 wk
7 May
6 Jul
5 wk after
Cornflower
Centaurea cyanus
1 Apr
18 Jul
0 wk
25 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
9 – 23 Feb
13 May
8-10 wk
20 Apr
8 Jul
3 wk after
Sweet William
Dianthus barbatus
4 – 18 Feb
6-8 wk
1 Apr
0 wk
6 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
23 Feb – 9 Mar
27 May
6-8 wk
20 Apr
8 Jul
3 wk after
9 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
18 Feb – 4 Mar
27 May
6-8 wk
15 Apr
8 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
25 Feb – 25 Mar
10 Jun
4-8 wk
22 Apr
8 Jul
3 wk after
22 Apr
28 Jun
3 wk after
Foxglove
Digitalis purpurea
21 Jan – 4 Feb
8-10 wk
1 Apr
0 wk
11 Apr
1 wk after
Busy lizzie
Impatiens walleriana
12 Feb – 12 Mar
8 Jul
8-12 wk
7 May
2 Sep
5 wk after
Creeping zinnia
Sanvitalia procumbens
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
3 wk after
Hyacinth bean
Dolichos lablab
7 – 21 Apr
1 May
4-6 wk
19 May
29 May
7 wk after
Chinese lantern
Physalis alkekengi
27 Jan – 10 Feb
23 Apr
8-10 wk
7 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
1 Apr
3 Jul
0 wk
25 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
23 Feb – 9 Mar
17 May
6-8 wk
20 Apr
28 Jun
3 wk after
9 Jun
18 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
13 Jan – 10 Feb
23 Apr
8-12 wk
7 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
26 Jan – 23 Feb
24 Mar
8-12 wk
20 Apr
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
12 Feb – 12 Mar
1 May
8-12 wk
7 May
26 Jun
5 wk after
Globe amaranth
Gomphrena globosa
12 – 26 Mar
15 May
6-8 wk
7 May
26 Jun
5 wk after
Corn poppy
Papaver rhoeas
1 Apr
18 Jul
0 wk
25 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
7 Jan – 4 Feb
13 May
8-12 wk
1 Apr
8 Jul
0 wk
6 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
26 Feb – 12 Mar
23 May
8-10 wk
7 May
18 Jul
5 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Feb
3 Jun
5-8 wk
1 Apr
8 Jul
0 wk
Stock
Matthiola incana
4 – 18 Feb
6 Jun
6-8 wk
1 Apr
18 Jul
0 wk
11 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
4 – 18 Feb
7 May
6-8 wk
1 Apr
18 Jun
0 wk
11 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
26 Mar – 9 Apr
24 May
4-6 wk
7 May
21 Jun
5 wk after
Garden pansy
Viola × wittrockiana
21 Jan – 4 Feb
23 May
8-10 wk
1 Apr
18 Jul
0 wk
6 Apr
8 Jul
1 wk after
Petunia
Petunia
26 Jan – 23 Feb
13 May
8-12 wk
20 Apr
8 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Feb
7 May
6-8 wk
7 Apr
18 Jun
1 wk after
7 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
9 – 23 Mar
20 Jun
4-6 wk
20 Apr
18 Jul
3 wk after
Common morning glory
Ipomoea purpurea
2 – 16 Apr
15 Jun
3-5 wk
7 May
6 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 Mar
10 Jun
4-6 wk
20 Apr
8 Jul
3 wk after
7 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
24 Feb – 24 Mar
31 May
8-12 wk
19 May
26 Jul
7 wk after
Bee balm
Monarda didyma
7 Jan – 4 Feb
23 Apr
8-12 wk
1 Apr
18 Jun
0 wk
22 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
4 – 18 Feb
7 Apr
6-8 wk
1 Apr
19 May
0 wk
11 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
1 Apr
18 Jun
0 wk
25 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Feb
27 May
6-8 wk
1 Apr
8 Jul
0 wk
21 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
18 Feb – 4 Mar
10 Jun
4-6 wk
1 Apr
8 Jul
0 wk
11 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
12 – 26 Feb
9 Apr
10-12 wk
7 May
18 Jun
5 wk after
Sunflower
Helianthus annuus
23 – 30 Mar
17 Jun
3-4 wk
20 Apr
8 Jul
3 wk after
22 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
3 wk after
7 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
15 Feb – 1 Mar
6 Jun
6-8 wk
12 Apr
18 Jul
2 wk after
7 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
4 – 18 Feb
6-8 wk
1 Apr
0 wk
11 Apr
1 wk after
Alpine delphinium
Delphinium elatum
7 Jan – 4 Feb
23 Apr
8-12 wk
1 Apr
18 Jun
0 wk
22 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Feb
27 May
6-8 wk
7 Apr
8 Jul
1 wk after
7 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
21 Jan – 4 Feb
13 Apr
8-10 wk
1 Apr
8 Jun
0 wk
22 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
26 Feb – 26 Mar
25 May
6-10 wk
7 May
6 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
1 Apr
18 Jul
0 wk
25 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
9 – 23 Feb
13 May
8-10 wk
20 Apr
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
4 – 18 Feb
7 May
6-8 wk
1 Apr
18 Jun
0 wk
20 Mar
8 Jun
2 wk before