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Rel. frost
Last spring frost (0°C) 17 May Frost 1 of 4 years · 20 years of data
Frost-free season 156 days 17 May – 20 Oct
Probability that frost is over

75% = 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)
30 Apr – 14 May
19 Jun
5-7 wk
18 Jun
24 Jul
5 wk after
11 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Apr – 9 May
1 Jul
4-6 wk
6 Jun
29 Jul
3 wk after
11 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
19 Apr – 17 May
28 Apr
8-12 wk
12 Jul
8 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Feb – 13 Mar
14 Jun
5-7 wk
17 Apr
19 Jul
4 wk before
4 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
25 Jun – 2 Jul
3-4 wk
23 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 Jun
4-5 wk
23 Jul
10 wk after
27 Jun
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Fleece
3 – 10 Jul
3-4 wk
31 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Feb – 22 Mar
4 Apr
8-12 wk
17 May
30 May
Vid frost
30 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
19 Jun
1 wk before
11 May
9 Jun
1 wk before
Maize
Zea mays
14 – 21 Jun
3-4 wk
12 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 May
8 Jul
3-4 wk
18 Jun
29 Jul
5 wk after
30 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Feb – 13 Mar
14 Jun
5-7 wk
17 Apr
19 Jul
4 wk before
4 May
9 Jul
2 wk before
Potato
Solanum tuberosum
10 – 24 Apr
11 Jun
4-6 wk
22 May
9 Jul
1 wk after
22 May
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Feb – 13 Mar
24 Jun
5-7 wk
17 Apr
29 Jul
4 wk before
11 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
25 Jun – 2 Jul
6 Jul
3-4 wk
23 Jul
27 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 May
7 Jul
3-4 wk
18 Jun
28 Jul
5 wk after
30 May
18 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Apr – 9 May
26 Jun
4-6 wk
6 Jun
24 Jul
3 wk after
Lettuce
Lactuca sativa
10 – 17 Apr
13 Jul
3-4 wk
8 May
3 Aug
1 wk before
11 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Mar – 10 Apr
26 Jun
4-6 wk
8 May
24 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Apr
5 Jun
2-4 wk
4 May
19 Jun
2 wk before
4 May
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
19 Jun
1 wk before
11 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
30 Mar – 6 Apr
28 Jul
3-4 wk
27 Apr
18 Aug
3 wk before
27 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
18 Jun – 2 Jul
4-6 wk
30 Jul
11 wk after
Garden tomato
Solanum lycopersicum
17 – 31 May
22 May
6-8 wk
12 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 Jun
8 Jul
2-4 wk
12 Jul
22 Jul
8 wk after
27 Jun
12 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Apr – 9 May
26 Jun
4-6 wk
6 Jun
24 Jul
3 wk after
Garden pea
Pisum sativum
30 Mar – 6 Apr
28 Jun
3-4 wk
27 Apr
19 Jul
3 wk before
11 May
9 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
11 – 25 Jun
14 Jun
4-6 wk
23 Jul
10 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
24 May
8-10 wk
17 May
19 Jul
Vid frost
12 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
11 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
20 Feb – 6 Mar
7 Jun
6-8 wk
17 Apr
19 Jul
4 wk before
11 May
9 Jul
1 wk before
Spearmint
Mentha spicata
2 Feb – 2 Mar
24 May
8-12 wk
27 Apr
19 Jul
3 wk before
12 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
30 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
9 – 23 Apr
9 May
8-10 wk
18 Jun
4 Jul
5 wk after
Common thyme
Thymus vulgaris
28 Mar – 11 Apr
14 May
8-10 wk
6 Jun
9 Jul
3 wk after
Oregano
Origanum vulgare
31 Mar – 14 Apr
28 May
6-8 wk
26 May
9 Jul
1 wk after
12 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Mar
28 May
6-8 wk
27 Apr
9 Jul
3 wk before
11 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
12 Mar – 9 Apr
10 Apr
10-14 wk
18 Jun
19 Jun
5 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
25 Jun – 2 Jul
3-4 wk
23 Jul
10 wk after
Cornflower
Centaurea cyanus
27 Apr
19 Jul
3 wk before
11 May
9 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 May
14 May
8-10 wk
12 Jul
8 wk after
Sweet William
Dianthus barbatus
2 – 16 Mar
6-8 wk
27 Apr
3 wk before
22 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 – 31 May
28 May
6-8 wk
12 Jul
8 wk after
30 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 May
28 May
6-8 wk
5 Jul
9 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Apr – 15 May
11 Jun
4-8 wk
12 Jun
9 Jul
4 wk after
12 Jun
29 Jun
4 wk after
Foxglove
Digitalis purpurea
16 Feb – 2 Mar
8-10 wk
27 Apr
3 wk before
30 May
2 wk after
Busy lizzie
Impatiens walleriana
30 Apr – 28 May
9 Jul
8-12 wk
23 Jul
3 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
17 – 31 May
7 Jun
6-8 wk
12 Jul
19 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
31 May – 14 Jun
4-6 wk
12 Jul
8 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Apr
24 Apr
8-10 wk
18 Jun
19 Jun
5 wk after
Love in a mist
Nigella damascena
11 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 – 31 May
18 May
6-8 wk
12 Jul
8 wk after
30 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
26 Mar – 23 Apr
24 Apr
8-12 wk
18 Jun
19 Jun
5 wk after
Cardoon
Cynara cardunculus
19 Apr – 17 May
8-12 wk
12 Jul
8 wk after
Regal-foxtail
Ptilotus nobilis
30 Apr – 28 May
7 May
8-12 wk
23 Jul
10 wk after
Globe amaranth
Gomphrena globosa
28 May – 11 Jun
6-8 wk
23 Jul
10 wk after
Corn poppy
Papaver rhoeas
11 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
13 Feb – 13 Mar
14 May
8-12 wk
8 May
9 Jul
1 wk before
22 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
14 – 28 May
24 May
8-10 wk
23 Jul
10 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Mar
4 Jun
5-8 wk
27 Apr
9 Jul
3 wk before
Stock
Matthiola incana
13 – 27 Mar
7 Jun
6-8 wk
8 May
19 Jul
1 wk before
30 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Mar
8 May
6-8 wk
27 Apr
19 Jun
3 wk before
30 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Feb
24 May
8-10 wk
17 Apr
19 Jul
4 wk before
22 May
9 Jul
1 wk after
Petunia
Petunia
19 Apr – 17 May
14 May
8-12 wk
12 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Apr – 7 May
8 May
6-8 wk
18 Jun
19 Jun
5 wk after
27 Jun
6 wk after
Common zinnia
Zinnia elegans
31 May – 14 Jun
21 Jun
4-6 wk
12 Jul
19 Jul
8 wk after
Common morning glory
Ipomoea purpurea
18 Jun – 2 Jul
21 Jun
3-5 wk
23 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
31 May – 14 Jun
11 Jun
4-6 wk
12 Jul
8 wk after
27 Jun
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
7 May – 4 Jun
6 Jun
8-12 wk
30 Jul
1 Aug
11 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
24 Apr
8-12 wk
17 May
19 Jun
Vid frost
12 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Mar
8 Apr
6-8 wk
27 Apr
20 May
3 wk before
30 May
2 wk after
Safflower
Carthamus tinctorius
27 Apr
19 Jun
3 wk before
11 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
20 Feb – 6 Mar
28 May
6-8 wk
17 Apr
9 Jul
4 wk before
4 May
29 Jun
2 wk before
Bishop's flower
Ammi majus
20 Apr – 4 May
11 Jun
4-6 wk
1 Jun
9 Jul
2 wk after
30 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
30 Apr – 14 May
10-12 wk
23 Jul
10 wk after
Sunflower
Helianthus annuus
14 – 21 Jun
18 Jun
3-4 wk
12 Jul
8 wk after
12 Jun
29 Jun
4 wk after
China aster
Callistephus chinensis
17 – 31 May
7 Jun
6-8 wk
12 Jul
19 Jul
8 wk after
27 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
2 – 16 May
7 Jun
6-8 wk
27 Jun
19 Jul
6 wk after
27 Jun
9 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Mar
6-8 wk
27 Apr
3 wk before
30 May
2 wk after
Alpine delphinium
Delphinium elatum
14 Mar – 11 Apr
24 Apr
8-12 wk
6 Jun
19 Jun
3 wk after
12 Jun
4 wk after
African marigold
Tagetes erecta
17 – 31 May
7 Jun
6-8 wk
12 Jul
19 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
23 Apr – 7 May
28 May
6-8 wk
18 Jun
9 Jul
5 wk after
27 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
14 Apr
8-10 wk
26 May
9 Jun
1 wk after
12 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
14 May – 11 Jun
31 May
6-10 wk
23 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
11 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 May
14 May
8-10 wk
12 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Mar
8 May
6-8 wk
27 Apr
19 Jun
3 wk before
30 May
9 Jun
2 wk after