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Rel. frost
Last spring frost (0°C) 3 May Frost 1 of 4 years · 20 years of data
Frost-free season 180 days 3 May – 30 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)
13 – 27 Apr
18 Jun
5-7 wk
1 Jun
23 Jul
4 wk after
26 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
30 Jun
4-6 wk
17 May
28 Jul
2 wk after
26 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
4 Apr – 2 May
17 Apr
8-12 wk
27 Jun
8 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Feb – 4 Mar
13 Jun
5-7 wk
8 Apr
18 Jul
4 wk before
21 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
30 May – 6 Jun
18 Jun
3-4 wk
27 Jun
9 Jul
8 wk after
Florence Fennel
Foeniculum vulgare
23 – 30 May
10 Jun
4-5 wk
27 Jun
8 Jul
8 wk after
8 Jun
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
4 – 11 Jun
3-4 wk
2 Jul
9 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Feb – 8 Mar
3 Apr
8-12 wk
3 May
29 May
Vid frost
13 May
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
18 Jun
1 wk before
26 Apr
8 Jun
1 wk before
Maize
Zea mays
22 – 29 May
8 Jun
3-4 wk
19 Jun
29 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 May
7 Jul
3-4 wk
1 Jun
28 Jul
4 wk after
13 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Feb – 4 Mar
13 Jun
5-7 wk
8 Apr
18 Jul
4 wk before
21 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
27 Mar – 10 Apr
10 Jun
4-6 wk
8 May
8 Jul
1 wk after
8 May
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Feb – 4 Mar
23 Jun
5-7 wk
8 Apr
28 Jul
4 wk before
26 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
30 May – 6 Jun
8 Jul
3-4 wk
27 Jun
29 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 May
1 Jul
3-4 wk
1 Jun
22 Jul
4 wk after
13 May
12 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
25 Jun
4-6 wk
17 May
23 Jul
2 wk after
Lettuce
Lactuca sativa
29 Mar – 5 Apr
12 Jul
3-4 wk
26 Apr
2 Aug
1 wk before
26 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Mar
25 Jun
4-6 wk
26 Apr
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Mar – 7 Apr
4 Jun
2-4 wk
21 Apr
18 Jun
2 wk before
21 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Apr
18 Jun
1 wk before
26 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
21 – 28 Mar
27 Jul
3-4 wk
18 Apr
17 Aug
2 wk before
15 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
24 Apr – 8 May
18 May
6-8 wk
19 Jun
29 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
22 May – 5 Jun
10 Jul
2-4 wk
19 Jun
24 Jul
7 wk after
8 Jun
14 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
25 Jun
4-6 wk
17 May
23 Jul
2 wk after
Garden pea
Pisum sativum
21 – 28 Mar
27 Jun
3-4 wk
18 Apr
18 Jul
2 wk before
26 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
16 – 30 May
16 Jun
4-6 wk
27 Jun
14 Jul
8 wk after
Lemon balm
Melissa officinalis
22 Feb – 8 Mar
23 May
8-10 wk
3 May
18 Jul
Vid frost
24 May
8 Jul
3 wk after
Dill
Anethum graveolens
26 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
11 – 25 Feb
6 Jun
6-8 wk
8 Apr
18 Jul
4 wk before
26 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
24 Jan – 21 Feb
23 May
8-12 wk
18 Apr
18 Jul
2 wk before
24 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
13 May
7 Aug
1 wk after
Garden sage
Salvia officinalis
23 Mar – 6 Apr
8 May
8-10 wk
1 Jun
3 Jul
4 wk after
Common thyme
Thymus vulgaris
8 – 22 Mar
13 May
8-10 wk
17 May
8 Jul
2 wk after
Oregano
Origanum vulgare
14 – 28 Mar
27 May
6-8 wk
9 May
8 Jul
1 wk after
24 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
21 Feb – 7 Mar
27 May
6-8 wk
18 Apr
8 Jul
2 wk before
26 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
23 Feb – 23 Mar
9 Apr
10-14 wk
1 Jun
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
30 May – 6 Jun
23 Jun
3-4 wk
27 Jun
14 Jul
8 wk after
Cornflower
Centaurea cyanus
18 Apr
18 Jul
2 wk before
26 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
10 – 24 Apr
13 May
8-10 wk
19 Jun
8 Jul
7 wk after
Sweet William
Dianthus barbatus
21 Feb – 7 Mar
6-8 wk
18 Apr
2 wk before
8 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
24 Apr – 8 May
27 May
6-8 wk
19 Jun
8 Jul
7 wk after
11 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
18 Apr – 2 May
27 May
6-8 wk
13 Jun
8 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
29 Mar – 26 Apr
10 Jun
4-8 wk
24 May
8 Jul
3 wk after
24 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
7 – 21 Feb
8-10 wk
18 Apr
2 wk before
13 May
1 wk after
Busy lizzie
Impatiens walleriana
4 Apr – 2 May
8 Jul
8-12 wk
27 Jun
2 Sep
8 wk after
Creeping zinnia
Sanvitalia procumbens
24 Apr – 8 May
6 Jun
6-8 wk
19 Jun
18 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Fleece
16 – 30 May
17 May
4-6 wk
27 Jun
8 wk after
Chinese lantern
Physalis alkekengi
23 Mar – 6 Apr
23 Apr
8-10 wk
1 Jun
18 Jun
4 wk after
Love in a mist
Nigella damascena
26 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
24 Apr – 8 May
17 May
6-8 wk
19 Jun
28 Jun
7 wk after
11 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
9 Mar – 6 Apr
23 Apr
8-12 wk
1 Jun
18 Jun
4 wk after
Cardoon
Cynara cardunculus
27 Mar – 24 Apr
8-12 wk
19 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
4 Apr – 2 May
9 May
8-12 wk
27 Jun
4 Jul
8 wk after
Globe amaranth
Gomphrena globosa
2 – 16 May
23 May
6-8 wk
27 Jun
4 Jul
8 wk after
Corn poppy
Papaver rhoeas
26 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 Feb – 1 Mar
13 May
8-12 wk
26 Apr
8 Jul
1 wk before
8 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
18 Apr – 2 May
23 May
8-10 wk
27 Jun
18 Jul
8 wk after
Sweet pea
Lathyrus odoratus
21 Feb – 14 Mar
3 Jun
5-8 wk
18 Apr
8 Jul
2 wk before
Stock
Matthiola incana
1 – 15 Mar
6 Jun
6-8 wk
26 Apr
18 Jul
1 wk before
13 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
21 Feb – 7 Mar
7 May
6-8 wk
18 Apr
18 Jun
2 wk before
13 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
16 – 30 May
1 Jun
4-6 wk
27 Jun
29 Jun
8 wk after
Garden pansy
Viola × wittrockiana
28 Jan – 11 Feb
23 May
8-10 wk
8 Apr
18 Jul
4 wk before
8 May
8 Jul
1 wk after
Petunia
Petunia
27 Mar – 24 Apr
13 May
8-12 wk
19 Jun
8 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
6 – 20 Apr
7 May
6-8 wk
1 Jun
18 Jun
4 wk after
8 Jun
8 Jun
5 wk after
Common zinnia
Zinnia elegans
8 – 22 May
20 Jun
4-6 wk
19 Jun
18 Jul
7 wk after
Common morning glory
Ipomoea purpurea
23 May – 6 Jun
23 Jun
3-5 wk
27 Jun
14 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
8 – 22 May
10 Jun
4-6 wk
19 Jun
8 Jul
7 wk after
8 Jun
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
8 Apr – 6 May
8 Jun
8-12 wk
1 Jul
3 Aug
8 wk after
Bee balm
Monarda didyma
8 Feb – 8 Mar
23 Apr
8-12 wk
3 May
18 Jun
Vid frost
24 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
21 Feb – 7 Mar
7 Apr
6-8 wk
18 Apr
19 May
2 wk before
13 May
1 wk after
Safflower
Carthamus tinctorius
18 Apr
18 Jun
2 wk before
26 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
11 – 25 Feb
27 May
6-8 wk
8 Apr
8 Jul
4 wk before
21 Apr
28 Jun
2 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
10 Jun
4-6 wk
13 May
8 Jul
1 wk after
13 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
4 – 18 Apr
9 Apr
10-12 wk
27 Jun
8 wk after
Sunflower
Helianthus annuus
22 – 29 May
17 Jun
3-4 wk
19 Jun
8 Jul
7 wk after
24 May
28 Jun
3 wk after
China aster
Callistephus chinensis
24 Apr – 8 May
6 Jun
6-8 wk
19 Jun
18 Jul
7 wk after
8 Jun
8 Jul
5 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
6 Jun
6-8 wk
7 Jun
18 Jul
5 wk after
8 Jun
8 Jul
5 wk after
Hollyhock
Alcea rosea
21 Feb – 7 Mar
6-8 wk
18 Apr
2 wk before
13 May
1 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
23 Apr
8-12 wk
17 May
18 Jun
2 wk after
24 May
8 Jun
3 wk after
African marigold
Tagetes erecta
24 Apr – 8 May
6 Jun
6-8 wk
19 Jun
18 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 Apr
27 May
6-8 wk
1 Jun
8 Jul
4 wk after
8 Jun
28 Jun
5 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
13 Apr
8-10 wk
9 May
8 Jun
1 wk after
24 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
18 Apr – 16 May
2 Jun
6-10 wk
27 Jun
14 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
26 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
10 – 24 Apr
13 May
8-10 wk
19 Jun
8 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
21 Feb – 7 Mar
7 May
6-8 wk
18 Apr
18 Jun
2 wk before
13 May
8 Jun
1 wk after