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Rel. frost
Last spring frost (0°C) 11 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 250 days 11 Apr – 17 Dec
Probability that frost is over

90% = 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)
21 Feb – 7 Mar
22 Jun
5-7 wk
11 Apr
27 Jul
0 wk
5 Apr
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
28 Feb – 14 Mar
4 Jul
4-6 wk
11 Apr
1 Aug
0 wk
5 Apr
22 Jul
1 wk before
Chili pepper
Capsicum annuum
27 Feb – 27 Mar
12 Apr
8-12 wk
22 May
7 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
21 Feb – 7 Mar
17 Jun
5-7 wk
11 Apr
22 Jul
0 wk
24 Feb
12 Jul
7 wk before
Garden cucumber
Cucumis sativus
24 Apr – 1 May
17 Jun
3-4 wk
22 May
8 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 Apr
14 Jun
4-5 wk
22 May
12 Jul
6 wk after
22 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
20 – 27 May
3 Jun
3-4 wk
17 Jun
24 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Jan – 14 Feb
7 Apr
8-12 wk
11 Apr
2 Jun
0 wk
24 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 Apr
22 Jun
1 wk before
5 Apr
12 Jun
1 wk before
Maize
Zea mays
10 – 17 Apr
7 Jun
3-4 wk
8 May
28 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Mar
11 Jul
3-4 wk
11 Apr
1 Aug
0 wk
24 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 Apr
12 Jul
0 wk
29 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
21 Feb – 7 Mar
17 Jun
5-7 wk
11 Apr
22 Jul
0 wk
24 Feb
12 Jul
7 wk before
Potato
Solanum tuberosum
5 – 19 Mar
14 Jun
4-6 wk
16 Apr
12 Jul
1 wk after
16 Apr
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Feb – 7 Mar
27 Jun
5-7 wk
11 Apr
1 Aug
0 wk
5 Apr
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
24 Apr – 1 May
8 Jul
3-4 wk
22 May
29 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Mar
11 Jul
3-4 wk
11 Apr
1 Aug
0 wk
24 Apr
22 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
28 Feb – 14 Mar
29 Jun
4-6 wk
11 Apr
27 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Mar
16 Jul
3-4 wk
11 Apr
6 Aug
0 wk
5 Apr
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
28 Feb – 14 Mar
29 Jun
4-6 wk
11 Apr
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 Mar
8 Jun
2-4 wk
29 Mar
22 Jun
2 wk before
29 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 Apr
22 Jun
1 wk before
5 Apr
12 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Mar
31 Jul
3-4 wk
11 Apr
21 Aug
0 wk
22 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
13 – 27 May
4-6 wk
24 Jun
11 wk after
Garden tomato
Solanum lycopersicum
13 – 27 Mar
17 May
6-8 wk
8 May
28 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 Apr
10 Jul
2-4 wk
8 May
24 Jul
4 wk after
22 May
14 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
28 Feb – 14 Mar
29 Jun
4-6 wk
11 Apr
27 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Mar
1 Jul
3-4 wk
11 Apr
22 Jul
0 wk
5 Apr
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
10 – 24 Apr
16 Jun
4-6 wk
22 May
14 Jul
6 wk after
Lemon balm
Melissa officinalis
31 Jan – 14 Feb
27 May
8-10 wk
11 Apr
22 Jul
0 wk
7 May
12 Jul
4 wk after
Dill
Anethum graveolens
5 Apr
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
14 – 28 Feb
10 Jun
6-8 wk
11 Apr
22 Jul
0 wk
8 Mar
12 Jul
5 wk before
Spearmint
Mentha spicata
17 Jan – 14 Feb
27 May
8-12 wk
11 Apr
22 Jul
0 wk
7 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
11 Apr
21 Aug
0 wk
24 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
31 Jan – 14 Feb
12 May
8-10 wk
11 Apr
7 Jul
0 wk
Common thyme
Thymus vulgaris
Season too short
31 Jan – 14 Feb
17 May
8-10 wk
11 Apr
12 Jul
0 wk
Oregano
Origanum vulgare
14 – 28 Feb
31 May
6-8 wk
11 Apr
12 Jul
0 wk
7 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
14 – 28 Feb
31 May
6-8 wk
11 Apr
12 Jul
0 wk
5 Apr
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
3 – 31 Jan
13 Apr
10-14 wk
11 Apr
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
24 Apr – 1 May
23 Jun
3-4 wk
22 May
14 Jul
6 wk after
Cornflower
Centaurea cyanus
11 Apr
22 Jul
0 wk
5 Apr
12 Jul
1 wk before
Statice
Limonium sinuatum
27 Feb – 13 Mar
17 May
8-10 wk
8 May
12 Jul
4 wk after
Sweet William
Dianthus barbatus
14 – 28 Feb
6-8 wk
11 Apr
0 wk
16 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Mar
31 May
6-8 wk
8 May
12 Jul
4 wk after
24 Jun
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Mar
31 May
6-8 wk
3 May
12 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
12 Mar – 9 Apr
14 Jun
4-8 wk
7 May
12 Jul
4 wk after
7 May
2 Jul
4 wk after
Foxglove
Digitalis purpurea
31 Jan – 14 Feb
8-10 wk
11 Apr
0 wk
24 Apr
2 wk after
Busy lizzie
Impatiens walleriana
27 Feb – 27 Mar
12 Jul
8-12 wk
22 May
6 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Mar
10 Jun
6-8 wk
8 May
22 Jul
4 wk after
Hyacinth bean
Dolichos lablab
28 Apr – 12 May
1 May
4-6 wk
9 Jun
8 wk after
Chinese lantern
Physalis alkekengi
31 Jan – 14 Feb
27 Apr
8-10 wk
11 Apr
22 Jun
0 wk
Love in a mist
Nigella damascena
11 Apr
7 Jul
0 wk
5 Apr
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Mar
21 May
6-8 wk
8 May
2 Jul
4 wk after
24 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
17 Jan – 14 Feb
27 Apr
8-12 wk
11 Apr
22 Jun
0 wk
Cardoon
Cynara cardunculus
13 Feb – 13 Mar
28 Mar
8-12 wk
8 May
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
27 Feb – 27 Mar
9 May
8-12 wk
22 May
4 Jul
6 wk after
Globe amaranth
Gomphrena globosa
27 Mar – 10 Apr
23 May
6-8 wk
22 May
4 Jul
6 wk after
Corn poppy
Papaver rhoeas
11 Apr
22 Jul
0 wk
5 Apr
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
17 Jan – 14 Feb
17 May
8-12 wk
11 Apr
12 Jul
0 wk
16 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 Mar
27 May
8-10 wk
22 May
22 Jul
6 wk after
Sweet pea
Lathyrus odoratus
14 Feb – 7 Mar
7 Jun
5-8 wk
11 Apr
12 Jul
0 wk
Stock
Matthiola incana
14 – 28 Feb
10 Jun
6-8 wk
11 Apr
22 Jul
0 wk
24 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
Season too short
14 – 28 Feb
11 May
6-8 wk
11 Apr
22 Jun
0 wk
29 Mar
12 Jun
2 wk before
Mexican sunflower
Tithonia rotundifolia
10 – 24 Apr
1 Jun
4-6 wk
22 May
29 Jun
6 wk after
Garden pansy
Viola × wittrockiana
31 Jan – 14 Feb
27 May
8-10 wk
11 Apr
22 Jul
0 wk
16 Apr
12 Jul
1 wk after
Petunia
Petunia
13 Feb – 13 Mar
17 May
8-12 wk
8 May
12 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Feb
11 May
6-8 wk
11 Apr
22 Jun
0 wk
22 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
27 Mar – 10 Apr
24 Jun
4-6 wk
8 May
22 Jul
4 wk after
Common morning glory
Ipomoea purpurea
17 Apr – 1 May
23 Jun
3-5 wk
22 May
14 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
27 Mar – 10 Apr
14 Jun
4-6 wk
8 May
12 Jul
4 wk after
22 May
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
17 Mar – 14 Apr
8 Jun
8-12 wk
9 Jun
3 Aug
8 wk after
Bee balm
Monarda didyma
17 Jan – 14 Feb
27 Apr
8-12 wk
11 Apr
22 Jun
0 wk
7 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
Season too short
14 – 28 Feb
11 Apr
6-8 wk
11 Apr
23 May
0 wk
29 Mar
13 May
2 wk before
Safflower
Carthamus tinctorius
11 Apr
22 Jun
0 wk
5 Apr
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Feb
31 May
6-8 wk
11 Apr
12 Jul
0 wk
24 Feb
2 Jul
7 wk before
Bishop's flower
Ammi majus
28 Feb – 14 Mar
14 Jun
4-6 wk
11 Apr
12 Jul
0 wk
24 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
27 Feb – 13 Mar
13 Apr
10-12 wk
22 May
22 Jun
6 wk after
Sunflower
Helianthus annuus
10 – 17 Apr
21 Jun
3-4 wk
8 May
12 Jul
4 wk after
7 May
2 Jul
4 wk after
China aster
Callistephus chinensis
13 – 27 Mar
10 Jun
6-8 wk
8 May
22 Jul
4 wk after
22 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
4 – 18 Mar
10 Jun
6-8 wk
29 Apr
22 Jul
3 wk after
22 May
12 Jul
6 wk after
Hollyhock
Alcea rosea
14 – 28 Feb
6-8 wk
11 Apr
0 wk
24 Apr
2 wk after
Alpine delphinium
Delphinium elatum
17 Jan – 14 Feb
27 Apr
8-12 wk
11 Apr
22 Jun
0 wk
7 May
12 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Mar
10 Jun
6-8 wk
8 May
22 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Feb
31 May
6-8 wk
11 Apr
12 Jul
0 wk
22 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
31 Jan – 14 Feb
17 Apr
8-10 wk
11 Apr
12 Jun
0 wk
7 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
13 Mar – 10 Apr
2 Jun
6-10 wk
22 May
14 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
11 Apr
22 Jul
0 wk
5 Apr
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
27 Feb – 13 Mar
17 May
8-10 wk
8 May
12 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
14 – 28 Feb
11 May
6-8 wk
11 Apr
22 Jun
0 wk
29 Mar
12 Jun
2 wk before