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Rel. frost
Last spring frost (0°C) 20 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 179 days 20 Apr – 16 Oct
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)
3 – 17 Apr
21 Jun
5-7 wk
22 May
26 Jul
5 wk after
14 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
3 Jul
4-6 wk
10 May
31 Jul
3 wk after
14 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
23 Mar – 20 Apr
20 Apr
8-12 wk
15 Jun
15 Jun
8 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Jan – 14 Feb
16 Jun
5-7 wk
21 Mar
21 Jul
4 wk before
7 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
29 May – 5 Jun
14 Jun
3-4 wk
26 Jun
5 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 May
13 Jun
4-5 wk
26 Jun
11 Jul
10 wk after
31 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
6 – 13 Jun
3-4 wk
4 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Jan – 23 Feb
6 Apr
8-12 wk
20 Apr
1 Jun
Vid frost
3 May
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 Apr
21 Jun
1 wk before
14 Apr
11 Jun
1 wk before
Maize
Zea mays
18 – 25 May
4 Jun
3-4 wk
15 Jun
25 Jun
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 Apr – 1 May
10 Jul
3-4 wk
22 May
31 Jul
5 wk after
3 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Jan – 14 Feb
16 Jun
5-7 wk
21 Mar
21 Jul
4 wk before
7 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
14 – 28 Mar
13 Jun
4-6 wk
25 Apr
11 Jul
1 wk after
25 Apr
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Jan – 14 Feb
26 Jun
5-7 wk
21 Mar
31 Jul
4 wk before
14 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
29 May – 5 Jun
5 Jul
3-4 wk
26 Jun
26 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Apr – 1 May
25 Jun
3-4 wk
22 May
16 Jul
5 wk after
3 May
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
28 Jun
4-6 wk
10 May
26 Jul
3 wk after
Lettuce
Lactuca sativa
14 – 21 Mar
15 Jul
3-4 wk
11 Apr
5 Aug
1 wk before
14 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Feb – 14 Mar
28 Jun
4-6 wk
11 Apr
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Mar
7 Jun
2-4 wk
7 Apr
21 Jun
2 wk before
7 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 Apr
21 Jun
1 wk before
14 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 Mar
30 Jul
3-4 wk
31 Mar
20 Aug
3 wk before
31 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
22 May – 5 Jun
4-6 wk
3 Jul
11 wk after
Garden tomato
Solanum lycopersicum
20 Apr – 4 May
14 May
6-8 wk
15 Jun
25 Jun
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
18 May – 1 Jun
7 Jul
2-4 wk
15 Jun
21 Jul
8 wk after
31 May
11 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
28 Jun
4-6 wk
10 May
26 Jul
3 wk after
Garden pea
Pisum sativum
3 – 10 Mar
30 Jun
3-4 wk
31 Mar
21 Jul
3 wk before
14 Apr
11 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
15 – 29 May
13 Jun
4-6 wk
26 Jun
11 Jul
10 wk after
Lemon balm
Melissa officinalis
9 – 23 Feb
26 May
8-10 wk
20 Apr
21 Jul
Vid frost
16 May
11 Jul
4 wk after
Dill
Anethum graveolens
14 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
24 Jan – 7 Feb
9 Jun
6-8 wk
21 Mar
21 Jul
4 wk before
14 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
6 Jan – 3 Feb
26 May
8-12 wk
31 Mar
21 Jul
3 wk before
16 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
3 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
13 – 27 Mar
11 May
8-10 wk
22 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
16 May
8-10 wk
10 May
11 Jul
3 wk after
Oregano
Origanum vulgare
4 – 18 Mar
30 May
6-8 wk
29 Apr
11 Jul
1 wk after
16 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
3 – 17 Feb
30 May
6-8 wk
31 Mar
11 Jul
3 wk before
14 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
13 Feb – 13 Mar
12 Apr
10-14 wk
22 May
21 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
29 May – 5 Jun
20 Jun
3-4 wk
26 Jun
11 Jul
10 wk after
Cornflower
Centaurea cyanus
31 Mar
21 Jul
3 wk before
14 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
6 – 20 Apr
16 May
8-10 wk
15 Jun
11 Jul
8 wk after
Sweet William
Dianthus barbatus
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
25 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
20 Apr – 4 May
30 May
6-8 wk
15 Jun
11 Jul
8 wk after
3 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
30 May
6-8 wk
8 Jun
11 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
21 Mar – 18 Apr
13 Jun
4-8 wk
16 May
11 Jul
4 wk after
16 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
20 Jan – 3 Feb
8-10 wk
31 Mar
3 wk before
3 May
2 wk after
Busy lizzie
Impatiens walleriana
3 Apr – 1 May
9 Jul
8-12 wk
26 Jun
3 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
20 Apr – 4 May
9 Jun
6-8 wk
15 Jun
21 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
15 – 29 May
4-6 wk
26 Jun
10 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Mar
26 Apr
8-10 wk
22 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
14 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
20 Apr – 4 May
20 May
6-8 wk
15 Jun
1 Jul
8 wk after
3 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
27 Feb – 27 Mar
26 Apr
8-12 wk
22 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
23 Mar – 20 Apr
27 Mar
8-12 wk
15 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
3 Apr – 1 May
6 May
8-12 wk
26 Jun
1 Jul
10 wk after
Globe amaranth
Gomphrena globosa
1 – 15 May
20 May
6-8 wk
26 Jun
1 Jul
10 wk after
Corn poppy
Papaver rhoeas
14 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
17 Jan – 14 Feb
16 May
8-12 wk
11 Apr
11 Jul
1 wk before
25 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
17 Apr – 1 May
26 May
8-10 wk
26 Jun
21 Jul
10 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Feb
6 Jun
5-8 wk
31 Mar
11 Jul
3 wk before
Stock
Matthiola incana
14 – 28 Feb
9 Jun
6-8 wk
11 Apr
21 Jul
1 wk before
3 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Feb
10 May
6-8 wk
31 Mar
21 Jun
3 wk before
3 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
15 – 29 May
29 May
4-6 wk
26 Jun
26 Jun
10 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Jan
26 May
8-10 wk
21 Mar
21 Jul
4 wk before
25 Apr
11 Jul
1 wk after
Petunia
Petunia
23 Mar – 20 Apr
16 May
8-12 wk
15 Jun
11 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Mar – 10 Apr
10 May
6-8 wk
22 May
21 Jun
5 wk after
31 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
4 – 18 May
21 Jun
4-6 wk
15 Jun
19 Jul
8 wk after
Common morning glory
Ipomoea purpurea
22 May – 5 Jun
20 Jun
3-5 wk
26 Jun
11 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
4 – 18 May
13 Jun
4-6 wk
15 Jun
11 Jul
8 wk after
31 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
10 Apr – 8 May
5 Jun
8-12 wk
3 Jul
31 Jul
11 wk after
Bee balm
Monarda didyma
26 Jan – 23 Feb
26 Apr
8-12 wk
20 Apr
21 Jun
Vid frost
16 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
3 – 17 Feb
10 Apr
6-8 wk
31 Mar
22 May
3 wk before
3 May
12 May
2 wk after
Safflower
Carthamus tinctorius
31 Mar
21 Jun
3 wk before
14 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
24 Jan – 7 Feb
30 May
6-8 wk
21 Mar
11 Jul
4 wk before
7 Apr
1 Jul
2 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
13 Jun
4-6 wk
5 May
11 Jul
2 wk after
3 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
3 – 17 Apr
10 Apr
10-12 wk
26 Jun
10 wk after
Sunflower
Helianthus annuus
18 – 25 May
20 Jun
3-4 wk
15 Jun
11 Jul
8 wk after
16 May
1 Jul
4 wk after
China aster
Callistephus chinensis
20 Apr – 4 May
9 Jun
6-8 wk
15 Jun
21 Jul
8 wk after
31 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
5 – 19 Apr
9 Jun
6-8 wk
31 May
21 Jul
6 wk after
31 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
3 – 17 Feb
6-8 wk
31 Mar
3 wk before
3 May
2 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
26 Apr
8-12 wk
10 May
21 Jun
3 wk after
16 May
11 Jun
4 wk after
African marigold
Tagetes erecta
20 Apr – 4 May
9 Jun
6-8 wk
15 Jun
21 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
27 Mar – 10 Apr
30 May
6-8 wk
22 May
11 Jul
5 wk after
31 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Feb – 4 Mar
16 Apr
8-10 wk
29 Apr
11 Jun
1 wk after
16 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
17 Apr – 15 May
30 May
6-10 wk
26 Jun
11 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
14 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
6 – 20 Apr
16 May
8-10 wk
15 Jun
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Feb
10 May
6-8 wk
31 Mar
21 Jun
3 wk before
3 May
11 Jun
2 wk after