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Rel. frost
Last spring frost (0°C) 4 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 192 days 4 Apr – 13 Oct
Probability that frost is over

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