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Method
Rel. frost
Last spring frost (0°C) 2 May Frost 1 of 4 years · 20 years of data
Frost-free season 201 days 2 May – 19 Nov
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)
14 – 28 Mar
22 Jun
5-7 wk
2 May
27 Jul
0 wk
26 Apr
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
21 Mar – 4 Apr
4 Jul
4-6 wk
2 May
1 Aug
0 wk
26 Apr
22 Jul
1 wk before
Chili pepper
Capsicum annuum
20 Mar – 17 Apr
14 Apr
8-12 wk
12 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Mar
17 Jun
5-7 wk
2 May
22 Jul
0 wk
19 Apr
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
15 – 22 May
26 Jun
3-4 wk
12 Jun
17 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
14 Jun
4-5 wk
12 Jun
12 Jul
6 wk after
12 Jun
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
10 – 17 Jun
3-4 wk
8 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Feb – 7 Mar
7 Apr
8-12 wk
2 May
2 Jun
0 wk
15 May
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
22 Jun
1 wk before
26 Apr
12 Jun
1 wk before
Maize
Zea mays
1 – 8 May
16 Jun
3-4 wk
29 May
7 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 Apr
11 Jul
3-4 wk
2 May
1 Aug
0 wk
15 May
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 May
12 Jul
0 wk
19 Apr
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Mar
17 Jun
5-7 wk
2 May
22 Jul
0 wk
19 Apr
12 Jul
2 wk before
Potato
Solanum tuberosum
26 Mar – 9 Apr
14 Jun
4-6 wk
7 May
12 Jul
1 wk after
7 May
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Mar
27 Jun
5-7 wk
2 May
1 Aug
0 wk
26 Apr
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
15 – 22 May
13 Jul
3-4 wk
12 Jun
3 Aug
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 Apr
4 Jul
3-4 wk
2 May
25 Jul
0 wk
15 May
15 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Mar – 4 Apr
29 Jun
4-6 wk
2 May
27 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 Apr
16 Jul
3-4 wk
2 May
6 Aug
0 wk
26 Apr
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Mar – 4 Apr
29 Jun
4-6 wk
2 May
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Mar – 5 Apr
8 Jun
2-4 wk
19 Apr
22 Jun
2 wk before
19 Apr
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Apr
22 Jun
1 wk before
26 Apr
12 Jun
1 wk before
Spinach
Spinacia oleracea
4 – 11 Apr
31 Jul
3-4 wk
2 May
21 Aug
0 wk
12 Apr
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
11 wk after
Garden tomato
Solanum lycopersicum
3 – 17 Apr
26 May
6-8 wk
29 May
7 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 May
15 Jul
2-4 wk
29 May
29 Jul
4 wk after
12 Jun
19 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Mar – 4 Apr
29 Jun
4-6 wk
2 May
27 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 Apr
1 Jul
3-4 wk
2 May
22 Jul
0 wk
26 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
1 – 15 May
21 Jun
4-6 wk
12 Jun
19 Jul
6 wk after
Lemon balm
Melissa officinalis
21 Feb – 7 Mar
27 May
8-10 wk
2 May
22 Jul
0 wk
28 May
12 Jul
4 wk after
Dill
Anethum graveolens
26 Apr
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
7 – 21 Mar
10 Jun
6-8 wk
2 May
22 Jul
0 wk
26 Apr
12 Jul
1 wk before
Spearmint
Mentha spicata
7 Feb – 7 Mar
27 May
8-12 wk
2 May
22 Jul
0 wk
28 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
2 May
21 Aug
0 wk
15 May
11 Aug
2 wk after
Garden sage
Salvia officinalis
21 Feb – 7 Mar
12 May
8-10 wk
2 May
7 Jul
0 wk
Common thyme
Thymus vulgaris
21 Feb – 7 Mar
17 May
8-10 wk
2 May
12 Jul
0 wk
Oregano
Origanum vulgare
7 – 21 Mar
31 May
6-8 wk
2 May
12 Jul
0 wk
28 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
7 – 21 Mar
31 May
6-8 wk
2 May
12 Jul
0 wk
26 Apr
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
24 Jan – 21 Feb
13 Apr
10-14 wk
2 May
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
15 – 22 May
28 Jun
3-4 wk
12 Jun
19 Jul
6 wk after
Cornflower
Centaurea cyanus
2 May
22 Jul
0 wk
26 Apr
12 Jul
1 wk before
Statice
Limonium sinuatum
20 Mar – 3 Apr
17 May
8-10 wk
29 May
12 Jul
4 wk after
Sweet William
Dianthus barbatus
7 – 21 Mar
6-8 wk
2 May
0 wk
7 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
3 – 17 Apr
31 May
6-8 wk
29 May
12 Jul
4 wk after
15 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
29 Mar – 12 Apr
31 May
6-8 wk
24 May
12 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
2 – 30 Apr
14 Jun
4-8 wk
28 May
12 Jul
4 wk after
28 May
2 Jul
4 wk after
Foxglove
Digitalis purpurea
21 Feb – 7 Mar
8-10 wk
2 May
0 wk
15 May
2 wk after
Busy lizzie
Impatiens walleriana
20 Mar – 17 Apr
12 Jul
8-12 wk
12 Jun
6 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 Apr
10 Jun
6-8 wk
29 May
22 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
1 – 15 May
22 May
4-6 wk
12 Jun
19 Jun
6 wk after
Chinese lantern
Physalis alkekengi
21 Feb – 7 Mar
27 Apr
8-10 wk
2 May
22 Jun
0 wk
Love in a mist
Nigella damascena
2 May
7 Jul
0 wk
26 Apr
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
3 – 17 Apr
21 May
6-8 wk
29 May
2 Jul
4 wk after
15 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
7 Feb – 7 Mar
27 Apr
8-12 wk
2 May
22 Jun
0 wk
Cardoon
Cynara cardunculus
6 Mar – 3 Apr
28 Mar
8-12 wk
29 May
4 wk after
Regal-foxtail
Ptilotus nobilis
20 Mar – 17 Apr
14 May
8-12 wk
12 Jun
9 Jul
6 wk after
Globe amaranth
Gomphrena globosa
17 Apr – 1 May
28 May
6-8 wk
12 Jun
9 Jul
6 wk after
Corn poppy
Papaver rhoeas
2 May
22 Jul
0 wk
26 Apr
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
7 Feb – 7 Mar
17 May
8-12 wk
2 May
12 Jul
0 wk
7 May
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
3 – 17 Apr
27 May
8-10 wk
12 Jun
22 Jul
6 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Mar
7 Jun
5-8 wk
2 May
12 Jul
0 wk
Stock
Matthiola incana
7 – 21 Mar
10 Jun
6-8 wk
2 May
22 Jul
0 wk
15 May
12 Jul
2 wk after
Wormwood
Artemisia absinthium
7 – 21 Mar
11 May
6-8 wk
2 May
22 Jun
0 wk
15 May
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
1 – 15 May
6 Jun
4-6 wk
12 Jun
4 Jul
6 wk after
Garden pansy
Viola × wittrockiana
21 Feb – 7 Mar
27 May
8-10 wk
2 May
22 Jul
0 wk
7 May
12 Jul
1 wk after
Petunia
Petunia
6 Mar – 3 Apr
17 May
8-12 wk
29 May
12 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Mar
11 May
6-8 wk
2 May
22 Jun
0 wk
12 Jun
12 Jun
6 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
24 Jun
4-6 wk
29 May
22 Jul
4 wk after
Common morning glory
Ipomoea purpurea
8 – 22 May
28 Jun
3-5 wk
12 Jun
19 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
14 Jun
4-6 wk
29 May
12 Jul
4 wk after
12 Jun
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
7 Apr – 5 May
13 Jun
8-12 wk
30 Jun
8 Aug
8 wk after
Bee balm
Monarda didyma
7 Feb – 7 Mar
27 Apr
8-12 wk
2 May
22 Jun
0 wk
28 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
7 – 21 Mar
11 Apr
6-8 wk
2 May
23 May
0 wk
15 May
2 wk after
Safflower
Carthamus tinctorius
2 May
22 Jun
0 wk
26 Apr
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
7 – 21 Mar
31 May
6-8 wk
2 May
12 Jul
0 wk
17 Mar
2 Jul
7 wk before
Bishop's flower
Ammi majus
21 Mar – 4 Apr
14 Jun
4-6 wk
2 May
12 Jul
0 wk
15 May
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
20 Mar – 3 Apr
13 Apr
10-12 wk
12 Jun
22 Jun
6 wk after
Sunflower
Helianthus annuus
1 – 8 May
21 Jun
3-4 wk
29 May
12 Jul
4 wk after
28 May
2 Jul
4 wk after
China aster
Callistephus chinensis
3 – 17 Apr
10 Jun
6-8 wk
29 May
22 Jul
4 wk after
12 Jun
12 Jul
6 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
10 Jun
6-8 wk
20 May
22 Jul
3 wk after
12 Jun
12 Jul
6 wk after
Hollyhock
Alcea rosea
7 – 21 Mar
6-8 wk
2 May
0 wk
15 May
2 wk after
Alpine delphinium
Delphinium elatum
7 Feb – 7 Mar
27 Apr
8-12 wk
2 May
22 Jun
0 wk
28 May
12 Jun
4 wk after
African marigold
Tagetes erecta
3 – 17 Apr
10 Jun
6-8 wk
29 May
22 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Mar
31 May
6-8 wk
2 May
12 Jul
0 wk
12 Jun
2 Jul
6 wk after
Wood sage
Salvia nemorosa
21 Feb – 7 Mar
17 Apr
8-10 wk
2 May
12 Jun
0 wk
28 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
3 Apr – 1 May
7 Jun
6-10 wk
12 Jun
19 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
2 May
22 Jul
0 wk
26 Apr
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
17 May
8-10 wk
29 May
12 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Mar
11 May
6-8 wk
2 May
22 Jun
0 wk
15 May
12 Jun
2 wk after