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