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