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Method
Rel. frost
Last spring frost (0°C) 27 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 172 days 27 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)
9 – 23 Mar
14 Jun
5-7 wk
27 Apr
19 Jul
0 wk
1 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Mar
26 Jun
4-6 wk
27 Apr
24 Jul
0 wk
1 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
1 – 29 Mar
1 Apr
8-12 wk
24 May
27 May
4 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Mar
9 Jun
5-7 wk
27 Apr
14 Jul
0 wk
27 Apr
4 Jul
0 wk
Garden cucumber
Cucumis sativus
12 – 19 May
26 May
3-4 wk
9 Jun
16 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 May
6 Jun
4-5 wk
9 Jun
4 Jul
6 wk after
15 Jun
24 Jun
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
17 – 24 May
23 May
3-4 wk
14 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
2 Feb – 2 Mar
30 Mar
8-12 wk
27 Apr
25 May
0 wk
18 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 May
14 Jun
1 wk after
1 May
4 Jun
1 wk after
Maize
Zea mays
26 Apr – 3 May
16 May
3-4 wk
24 May
6 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Apr
3 Jul
3-4 wk
5 May
24 Jul
1 wk after
18 May
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Apr
4 Jul
0 wk
27 Apr
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Mar
9 Jun
5-7 wk
27 Apr
14 Jul
0 wk
27 Apr
4 Jul
0 wk
Potato
Solanum tuberosum
1 – 15 Apr
1 Jun
4-6 wk
13 May
29 Jun
2 wk after
13 May
19 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Mar
19 Jun
5-7 wk
27 Apr
24 Jul
0 wk
1 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
12 – 19 May
18 Jun
3-4 wk
9 Jun
9 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Apr
10 Jun
3-4 wk
5 May
1 Jul
1 wk after
18 May
21 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Mar
21 Jun
4-6 wk
27 Apr
19 Jul
0 wk
Lettuce
Lactuca sativa
30 Mar – 6 Apr
8 Jul
3-4 wk
27 Apr
29 Jul
0 wk
1 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Mar
21 Jun
4-6 wk
27 Apr
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Mar – 13 Apr
31 May
2-4 wk
27 Apr
14 Jun
0 wk
27 Apr
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 May
14 Jun
1 wk after
1 May
4 Jun
1 wk after
Spinach
Spinacia oleracea
30 Mar – 6 Apr
23 Jul
3-4 wk
27 Apr
13 Aug
0 wk
23 Apr
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
29 May – 12 Jun
4-6 wk
10 Jul
11 wk after
Garden tomato
Solanum lycopersicum
29 Mar – 12 Apr
25 Apr
6-8 wk
24 May
6 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
26 Apr – 10 May
20 Jun
2-4 wk
24 May
4 Jul
4 wk after
15 Jun
24 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Mar
21 Jun
4-6 wk
27 Apr
19 Jul
0 wk
Garden pea
Pisum sativum
30 Mar – 6 Apr
23 Jun
3-4 wk
27 Apr
14 Jul
0 wk
1 May
4 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
28 Apr – 12 May
27 May
4-6 wk
9 Jun
24 Jun
6 wk after
Lemon balm
Melissa officinalis
16 Feb – 2 Mar
19 May
8-10 wk
27 Apr
14 Jul
0 wk
1 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
1 May
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
2 – 16 Mar
2 Jun
6-8 wk
27 Apr
14 Jul
0 wk
1 May
4 Jul
1 wk after
Spearmint
Mentha spicata
2 Feb – 2 Mar
19 May
8-12 wk
27 Apr
14 Jul
0 wk
1 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
27 Apr
13 Aug
0 wk
18 May
3 Aug
3 wk after
Garden sage
Salvia officinalis
24 Feb – 10 Mar
4 May
8-10 wk
5 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
16 Feb – 2 Mar
9 May
8-10 wk
27 Apr
4 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Mar
23 May
6-8 wk
27 Apr
4 Jul
0 wk
1 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
2 – 16 Mar
23 May
6-8 wk
27 Apr
4 Jul
0 wk
1 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
27 Jan – 24 Feb
5 Apr
10-14 wk
5 May
14 Jun
1 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
12 – 19 May
3 Jun
3-4 wk
9 Jun
24 Jun
6 wk after
Cornflower
Centaurea cyanus
27 Apr
14 Jul
0 wk
1 May
4 Jul
1 wk after
Statice
Limonium sinuatum
15 – 29 Mar
3 May
8-10 wk
24 May
28 Jun
4 wk after
Sweet William
Dianthus barbatus
2 – 16 Mar
6-8 wk
27 Apr
0 wk
13 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
29 Mar – 12 Apr
17 May
6-8 wk
24 May
28 Jun
4 wk after
10 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
21 Mar – 4 Apr
21 May
6-8 wk
16 May
2 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 Apr – 4 May
4 Jun
4-8 wk
1 Jun
2 Jul
5 wk after
1 Jun
22 Jun
5 wk after
Foxglove
Digitalis purpurea
16 Feb – 2 Mar
8-10 wk
27 Apr
0 wk
18 May
3 wk after
Busy lizzie
Impatiens walleriana
17 Mar – 14 Apr
23 Jun
8-12 wk
9 Jun
18 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
12 – 26 Apr
6 May
4-6 wk
24 May
3 Jun
4 wk after
Chinese lantern
Physalis alkekengi
24 Feb – 10 Mar
19 Apr
8-10 wk
5 May
14 Jun
1 wk after
Love in a mist
Nigella damascena
27 Apr
29 Jun
0 wk
1 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
29 Mar – 12 Apr
7 May
6-8 wk
24 May
18 Jun
4 wk after
10 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
10 Feb – 10 Mar
19 Apr
8-12 wk
5 May
14 Jun
1 wk after
Cardoon
Cynara cardunculus
1 – 29 Mar
20 Mar
8-12 wk
24 May
4 wk after
Regal-foxtail
Ptilotus nobilis
17 Mar – 14 Apr
19 Apr
8-12 wk
9 Jun
14 Jun
6 wk after
Globe amaranth
Gomphrena globosa
14 – 28 Apr
3 May
6-8 wk
9 Jun
14 Jun
6 wk after
Corn poppy
Papaver rhoeas
27 Apr
14 Jul
0 wk
1 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
2 Feb – 2 Mar
9 May
8-12 wk
27 Apr
4 Jul
0 wk
13 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
31 Mar – 14 Apr
13 May
8-10 wk
9 Jun
8 Jul
6 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Mar
30 May
5-8 wk
27 Apr
4 Jul
0 wk
Stock
Matthiola incana
2 – 16 Mar
2 Jun
6-8 wk
27 Apr
14 Jul
0 wk
18 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
2 – 16 Mar
3 May
6-8 wk
27 Apr
14 Jun
0 wk
18 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
28 Apr – 12 May
12 May
4-6 wk
9 Jun
9 Jun
6 wk after
Garden pansy
Viola × wittrockiana
16 Feb – 2 Mar
19 May
8-10 wk
27 Apr
14 Jul
0 wk
13 May
4 Jul
2 wk after
Petunia
Petunia
1 – 29 Mar
3 May
8-12 wk
24 May
28 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Mar
3 May
6-8 wk
5 May
14 Jun
1 wk after
15 Jun
7 wk after
Common zinnia
Zinnia elegans
12 – 26 Apr
5 Jun
4-6 wk
24 May
3 Jul
4 wk after
Common morning glory
Ipomoea purpurea
5 – 19 May
3 Jun
3-5 wk
9 Jun
24 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
12 – 26 Apr
4 Jun
4-6 wk
24 May
2 Jul
4 wk after
15 Jun
22 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
27 Mar – 24 Apr
19 May
8-12 wk
19 Jun
14 Jul
8 wk after
Bee balm
Monarda didyma
2 Feb – 2 Mar
19 Apr
8-12 wk
27 Apr
14 Jun
0 wk
1 Jun
4 Jun
5 wk after
Yarrow
Achillea millefolium
2 – 16 Mar
3 Apr
6-8 wk
27 Apr
15 May
0 wk
18 May
3 wk after
Safflower
Carthamus tinctorius
27 Apr
14 Jun
0 wk
1 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Mar
23 May
6-8 wk
27 Apr
4 Jul
0 wk
9 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
16 – 30 Mar
6 Jun
4-6 wk
27 Apr
4 Jul
0 wk
18 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
17 – 31 Mar
25 Mar
10-12 wk
9 Jun
6 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
13 Jun
3-4 wk
24 May
4 Jul
4 wk after
1 Jun
24 Jun
5 wk after
China aster
Callistephus chinensis
29 Mar – 12 Apr
2 Jun
6-8 wk
24 May
14 Jul
4 wk after
15 Jun
4 Jul
7 wk after
Annual phlox
Phlox drummondii
17 – 31 Mar
27 May
6-8 wk
12 May
8 Jul
2 wk after
15 Jun
28 Jun
7 wk after
Hollyhock
Alcea rosea
2 – 16 Mar
6-8 wk
27 Apr
0 wk
18 May
3 wk after
Alpine delphinium
Delphinium elatum
2 Feb – 2 Mar
19 Apr
8-12 wk
27 Apr
14 Jun
0 wk
1 Jun
4 Jun
5 wk after
African marigold
Tagetes erecta
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Mar
23 May
6-8 wk
5 May
4 Jul
1 wk after
15 Jun
24 Jun
7 wk after
Wood sage
Salvia nemorosa
16 Feb – 2 Mar
9 Apr
8-10 wk
27 Apr
4 Jun
0 wk
1 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
31 Mar – 28 Apr
13 May
6-10 wk
9 Jun
24 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
27 Apr
14 Jul
0 wk
1 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
9 May
8-10 wk
24 May
4 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Mar
3 May
6-8 wk
27 Apr
14 Jun
0 wk
18 May
4 Jun
3 wk after