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Method
Rel. frost
Last spring frost (0°C) 27 Apr Normal year · 20 years of data
Frost-free season 188 days 27 Apr – 1 Nov
Probability that frost is over

50% = 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)
7 – 21 Apr
18 Jun
5-7 wk
26 May
23 Jul
4 wk after
20 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
30 Jun
4-6 wk
11 May
28 Jul
2 wk after
20 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
21 Mar – 18 Apr
23 Apr
8-12 wk
13 Jun
18 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Feb
13 Jun
5-7 wk
2 Apr
18 Jul
4 wk before
15 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
24 – 31 May
17 Jun
3-4 wk
21 Jun
8 Jul
8 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 May
10 Jun
4-5 wk
21 Jun
8 Jul
8 wk after
2 Jun
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
29 May – 5 Jun
30 May
3-4 wk
26 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
2 Feb – 2 Mar
3 Apr
8-12 wk
27 Apr
29 May
Vid frost
7 May
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Apr
18 Jun
1 wk before
20 Apr
8 Jun
1 wk before
Maize
Zea mays
16 – 23 May
7 Jun
3-4 wk
13 Jun
28 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Apr – 5 May
7 Jul
3-4 wk
26 May
28 Jul
4 wk after
7 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Feb
13 Jun
5-7 wk
2 Apr
18 Jul
4 wk before
15 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
21 Mar – 4 Apr
10 Jun
4-6 wk
2 May
8 Jul
1 wk after
2 May
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Feb
23 Jun
5-7 wk
2 Apr
28 Jul
4 wk before
20 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
24 – 31 May
4 Jul
3-4 wk
21 Jun
25 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Apr – 5 May
23 Jun
3-4 wk
26 May
14 Jul
4 wk after
7 May
4 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
25 Jun
4-6 wk
11 May
23 Jul
2 wk after
Lettuce
Lactuca sativa
23 – 30 Mar
12 Jul
3-4 wk
20 Apr
2 Aug
1 wk before
20 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Mar
25 Jun
4-6 wk
20 Apr
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Mar – 1 Apr
4 Jun
2-4 wk
15 Apr
18 Jun
2 wk before
15 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Apr
18 Jun
1 wk before
20 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
15 – 22 Mar
27 Jul
3-4 wk
12 Apr
17 Aug
2 wk before
9 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
24 May – 7 Jun
4-6 wk
5 Jul
10 wk after
Garden tomato
Solanum lycopersicum
18 Apr – 2 May
17 May
6-8 wk
13 Jun
28 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
16 – 30 May
6 Jul
2-4 wk
13 Jun
20 Jul
7 wk after
2 Jun
10 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
25 Jun
4-6 wk
11 May
23 Jul
2 wk after
Garden pea
Pisum sativum
15 – 22 Mar
27 Jun
3-4 wk
12 Apr
18 Jul
2 wk before
20 Apr
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
10 – 24 May
12 Jun
4-6 wk
21 Jun
10 Jul
8 wk after
Lemon balm
Melissa officinalis
16 Feb – 2 Mar
23 May
8-10 wk
27 Apr
18 Jul
Vid frost
18 May
8 Jul
3 wk after
Dill
Anethum graveolens
20 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Feb
6 Jun
6-8 wk
2 Apr
18 Jul
4 wk before
20 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
18 Jan – 15 Feb
23 May
8-12 wk
12 Apr
18 Jul
2 wk before
18 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
7 May
7 Aug
1 wk after
Garden sage
Salvia officinalis
17 – 31 Mar
8 May
8-10 wk
26 May
3 Jul
4 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
13 May
8-10 wk
11 May
8 Jul
2 wk after
Oregano
Origanum vulgare
8 – 22 Mar
27 May
6-8 wk
3 May
8 Jul
1 wk after
18 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
15 Feb – 1 Mar
27 May
6-8 wk
12 Apr
8 Jul
2 wk before
20 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
17 Feb – 17 Mar
9 Apr
10-14 wk
26 May
18 Jun
4 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
24 – 31 May
19 Jun
3-4 wk
21 Jun
10 Jul
8 wk after
Cornflower
Centaurea cyanus
12 Apr
18 Jul
2 wk before
20 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
4 – 18 Apr
13 May
8-10 wk
13 Jun
8 Jul
7 wk after
Sweet William
Dianthus barbatus
15 Feb – 1 Mar
6-8 wk
12 Apr
2 wk before
2 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
18 Apr – 2 May
27 May
6-8 wk
13 Jun
8 Jul
7 wk after
5 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
27 May
6-8 wk
7 Jun
8 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
23 Mar – 20 Apr
10 Jun
4-8 wk
18 May
8 Jul
3 wk after
18 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
1 – 15 Feb
8-10 wk
12 Apr
2 wk before
7 May
1 wk after
Busy lizzie
Impatiens walleriana
29 Mar – 26 Apr
7 Jul
8-12 wk
21 Jun
1 Sep
8 wk after
Creeping zinnia
Sanvitalia procumbens
18 Apr – 2 May
6 Jun
6-8 wk
13 Jun
18 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Fleece
10 – 24 May
13 May
4-6 wk
21 Jun
8 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Mar
23 Apr
8-10 wk
26 May
18 Jun
4 wk after
Love in a mist
Nigella damascena
20 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
18 Apr – 2 May
17 May
6-8 wk
13 Jun
28 Jun
7 wk after
5 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
3 – 31 Mar
23 Apr
8-12 wk
26 May
18 Jun
4 wk after
Cardoon
Cynara cardunculus
21 Mar – 18 Apr
24 Mar
8-12 wk
13 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
29 Mar – 26 Apr
5 May
8-12 wk
21 Jun
30 Jun
8 wk after
Globe amaranth
Gomphrena globosa
26 Apr – 10 May
19 May
6-8 wk
21 Jun
30 Jun
8 wk after
Corn poppy
Papaver rhoeas
20 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
26 Jan – 23 Feb
13 May
8-12 wk
20 Apr
8 Jul
1 wk before
2 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
12 – 26 Apr
23 May
8-10 wk
21 Jun
18 Jul
8 wk after
Sweet pea
Lathyrus odoratus
15 Feb – 8 Mar
3 Jun
5-8 wk
12 Apr
8 Jul
2 wk before
Stock
Matthiola incana
23 Feb – 9 Mar
6 Jun
6-8 wk
20 Apr
18 Jul
1 wk before
7 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
15 Feb – 1 Mar
7 May
6-8 wk
12 Apr
18 Jun
2 wk before
7 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
10 – 24 May
28 May
4-6 wk
21 Jun
25 Jun
8 wk after
Garden pansy
Viola × wittrockiana
22 Jan – 5 Feb
23 May
8-10 wk
2 Apr
18 Jul
4 wk before
2 May
8 Jul
1 wk after
Petunia
Petunia
21 Mar – 18 Apr
13 May
8-12 wk
13 Jun
8 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
31 Mar – 14 Apr
7 May
6-8 wk
26 May
18 Jun
4 wk after
2 Jun
8 Jun
5 wk after
Common zinnia
Zinnia elegans
2 – 16 May
19 Jun
4-6 wk
13 Jun
17 Jul
7 wk after
Common morning glory
Ipomoea purpurea
17 – 31 May
19 Jun
3-5 wk
21 Jun
10 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 May
10 Jun
4-6 wk
13 Jun
8 Jul
7 wk after
2 Jun
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Apr
4 Jun
8-12 wk
25 Jun
30 Jul
8 wk after
Bee balm
Monarda didyma
2 Feb – 2 Mar
23 Apr
8-12 wk
27 Apr
18 Jun
Vid frost
18 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
15 Feb – 1 Mar
7 Apr
6-8 wk
12 Apr
19 May
2 wk before
7 May
9 May
1 wk after
Safflower
Carthamus tinctorius
12 Apr
18 Jun
2 wk before
20 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
5 – 19 Feb
27 May
6-8 wk
2 Apr
8 Jul
4 wk before
15 Apr
28 Jun
2 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
10 Jun
4-6 wk
7 May
8 Jul
1 wk after
7 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
29 Mar – 12 Apr
8 Apr
10-12 wk
21 Jun
8 wk after
Sunflower
Helianthus annuus
16 – 23 May
17 Jun
3-4 wk
13 Jun
8 Jul
7 wk after
18 May
28 Jun
3 wk after
China aster
Callistephus chinensis
18 Apr – 2 May
6 Jun
6-8 wk
13 Jun
18 Jul
7 wk after
2 Jun
8 Jul
5 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
6 Jun
6-8 wk
1 Jun
18 Jul
5 wk after
2 Jun
8 Jul
5 wk after
Hollyhock
Alcea rosea
15 Feb – 1 Mar
6-8 wk
12 Apr
2 wk before
7 May
1 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
23 Apr
8-12 wk
11 May
18 Jun
2 wk after
18 May
8 Jun
3 wk after
African marigold
Tagetes erecta
18 Apr – 2 May
6 Jun
6-8 wk
13 Jun
18 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
31 Mar – 14 Apr
27 May
6-8 wk
26 May
8 Jul
4 wk after
2 Jun
28 Jun
5 wk after
Wood sage
Salvia nemorosa
22 Feb – 8 Mar
13 Apr
8-10 wk
3 May
8 Jun
1 wk after
18 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
12 Apr – 10 May
29 May
6-10 wk
21 Jun
10 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
20 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
4 – 18 Apr
13 May
8-10 wk
13 Jun
8 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
15 Feb – 1 Mar
7 May
6-8 wk
12 Apr
18 Jun
2 wk before
7 May
8 Jun
1 wk after