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Method
Rel. frost
Last spring frost (0°C) 1 Jun Frost 1 of 10 years · 20 years of data
Frost-free season 144 days 1 Jun – 23 Oct
Probability that frost is over

90% = 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)
13 – 27 Apr
19 Jun
5-7 wk
1 Jun
24 Jul
0 wk
26 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
20 Apr – 4 May
1 Jul
4-6 wk
1 Jun
29 Jul
0 wk
26 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
15 Mar – 12 Apr
20 Mar
8-12 wk
7 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Apr
14 Jun
5-7 wk
1 Jun
19 Jul
0 wk
19 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
17 – 24 May
3-4 wk
14 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
29 May – 5 Jun
11 Jun
4-5 wk
3 Jul
9 Jul
5 wk after
12 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
12 – 19 Jun
3-4 wk
10 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Mar – 6 Apr
4 Apr
8-12 wk
1 Jun
0 wk
14 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
19 Jun
1 wk before
26 May
9 Jun
1 wk before
Maize
Zea mays
Fleece
10 – 17 May
3-4 wk
7 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
6 – 13 May
8 Jul
3-4 wk
3 Jun
29 Jul
0 wk
14 Jun
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 Jun
9 Jul
0 wk
19 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Apr
14 Jun
5-7 wk
1 Jun
19 Jul
0 wk
19 May
9 Jul
2 wk before
Potato
Solanum tuberosum
25 Apr – 9 May
11 Jun
4-6 wk
6 Jun
9 Jul
1 wk after
6 Jun
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Apr
24 Jun
5-7 wk
1 Jun
29 Jul
0 wk
26 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 Jun
3-4 wk
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
6 – 13 May
8 Jul
3-4 wk
3 Jun
29 Jul
0 wk
14 Jun
19 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Apr – 4 May
26 Jun
4-6 wk
1 Jun
24 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 May
13 Jul
3-4 wk
1 Jun
3 Aug
0 wk
26 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Apr – 4 May
26 Jun
4-6 wk
1 Jun
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
5 Jun
2-4 wk
19 May
19 Jun
2 wk before
19 May
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
19 Jun
1 wk before
26 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
4 – 11 May
28 Jul
3-4 wk
1 Jun
18 Aug
0 wk
12 May
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jul
4-6 wk
14 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
12 – 26 Apr
13 Apr
6-8 wk
7 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
17 – 31 May
21 May
2-4 wk
14 Jun
2 wk after
12 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Apr – 4 May
26 Jun
4-6 wk
1 Jun
24 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 May
28 Jun
3-4 wk
1 Jun
19 Jul
0 wk
26 May
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
22 May – 5 Jun
4-6 wk
3 Jul
5 wk after
Lemon balm
Melissa officinalis
23 Mar – 6 Apr
24 May
8-10 wk
1 Jun
19 Jul
0 wk
27 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
26 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
6 – 20 Apr
7 Jun
6-8 wk
1 Jun
19 Jul
0 wk
26 May
9 Jul
1 wk before
Spearmint
Mentha spicata
9 Mar – 6 Apr
24 May
8-12 wk
1 Jun
19 Jul
0 wk
27 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
1 Jun
18 Aug
0 wk
14 Jun
8 Aug
2 wk after
Garden sage
Salvia officinalis
25 Mar – 8 Apr
9 May
8-10 wk
3 Jun
4 Jul
0 wk
Common thyme
Thymus vulgaris
23 Mar – 6 Apr
14 May
8-10 wk
1 Jun
9 Jul
0 wk
Oregano
Origanum vulgare
6 – 20 Apr
28 May
6-8 wk
1 Jun
9 Jul
0 wk
27 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
6 – 20 Apr
28 May
6-8 wk
1 Jun
9 Jul
0 wk
26 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
25 Feb – 25 Mar
10 Apr
10-14 wk
3 Jun
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
5 – 12 Jun
3-4 wk
3 Jul
5 wk after
Cornflower
Centaurea cyanus
1 Jun
19 Jul
0 wk
26 May
9 Jul
1 wk before
Statice
Limonium sinuatum
5 – 19 Apr
29 Apr
8-10 wk
14 Jun
24 Jun
2 wk after
Sweet William
Dianthus barbatus
6 – 20 Apr
6-8 wk
1 Jun
0 wk
6 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
19 Apr – 3 May
13 May
6-8 wk
14 Jun
24 Jun
2 wk after
14 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
17 Apr – 1 May
18 May
6-8 wk
12 Jun
29 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
2 – 30 May
1 Jun
4-8 wk
27 Jun
29 Jun
4 wk after
27 Jun
4 wk after
Foxglove
Digitalis purpurea
23 Mar – 6 Apr
8-10 wk
1 Jun
0 wk
14 Jun
2 wk after
Busy lizzie
Impatiens walleriana
10 Apr – 8 May
17 Jun
8-12 wk
3 Jul
12 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
19 Apr – 3 May
23 May
6-8 wk
14 Jun
4 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
3 – 17 May
4-6 wk
14 Jun
2 wk after
Chinese lantern
Physalis alkekengi
25 Mar – 8 Apr
24 Apr
8-10 wk
3 Jun
19 Jun
0 wk
Love in a mist
Nigella damascena
1 Jun
4 Jul
0 wk
26 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
19 Apr – 3 May
3 May
6-8 wk
14 Jun
14 Jun
2 wk after
14 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
11 Mar – 8 Apr
24 Apr
8-12 wk
3 Jun
19 Jun
0 wk
Cardoon
Cynara cardunculus
22 Mar – 19 Apr
25 Mar
8-12 wk
14 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
22 Mar – 19 Apr
22 Apr
8-12 wk
14 Jun
17 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
19 Apr – 3 May
6 May
6-8 wk
14 Jun
17 Jun
2 wk after
Corn poppy
Papaver rhoeas
1 Jun
19 Jul
0 wk
26 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Mar – 6 Apr
14 May
8-12 wk
1 Jun
9 Jul
0 wk
6 Jun
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
24 Apr – 8 May
9 May
8-10 wk
3 Jul
4 Jul
5 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Apr
4 Jun
5-8 wk
1 Jun
9 Jul
0 wk
Stock
Matthiola incana
6 – 20 Apr
7 Jun
6-8 wk
1 Jun
19 Jul
0 wk
14 Jun
9 Jul
2 wk after
Wormwood
Artemisia absinthium
6 – 20 Apr
8 May
6-8 wk
1 Jun
19 Jun
0 wk
14 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
3 – 17 May
15 May
4-6 wk
14 Jun
2 wk after
Garden pansy
Viola × wittrockiana
23 Mar – 6 Apr
24 May
8-10 wk
1 Jun
19 Jul
0 wk
6 Jun
9 Jul
1 wk after
Petunia
Petunia
22 Mar – 19 Apr
29 Apr
8-12 wk
14 Jun
24 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Apr
8 May
6-8 wk
3 Jun
19 Jun
0 wk
12 Jul
6 wk after
Common zinnia
Zinnia elegans
3 – 17 May
30 May
4-6 wk
14 Jun
27 Jun
2 wk after
Common morning glory
Ipomoea purpurea
29 May – 12 Jun
3-5 wk
3 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
3 – 17 May
1 Jun
4-6 wk
14 Jun
29 Jun
2 wk after
12 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 May
8-12 wk
24 Jul
8 wk after
Bee balm
Monarda didyma
9 Mar – 6 Apr
24 Apr
8-12 wk
1 Jun
19 Jun
0 wk
27 Jun
4 wk after
Yarrow
Achillea millefolium
6 – 20 Apr
8 Apr
6-8 wk
1 Jun
0 wk
14 Jun
2 wk after
Safflower
Carthamus tinctorius
1 Jun
19 Jun
0 wk
26 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
6 – 20 Apr
28 May
6-8 wk
1 Jun
9 Jul
0 wk
16 Apr
29 Jun
7 wk before
Bishop's flower
Ammi majus
20 Apr – 4 May
11 Jun
4-6 wk
1 Jun
9 Jul
0 wk
14 Jun
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
10 – 24 Apr
10-12 wk
3 Jul
5 wk after
Sunflower
Helianthus annuus
17 – 24 May
18 Jun
3-4 wk
14 Jun
9 Jul
2 wk after
27 Jun
29 Jun
4 wk after
China aster
Callistephus chinensis
19 Apr – 3 May
7 Jun
6-8 wk
14 Jun
19 Jul
2 wk after
12 Jul
6 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
23 May
6-8 wk
7 Jun
4 Jul
1 wk after
12 Jul
6 wk after
Hollyhock
Alcea rosea
6 – 20 Apr
6-8 wk
1 Jun
0 wk
14 Jun
2 wk after
Alpine delphinium
Delphinium elatum
9 Mar – 6 Apr
24 Apr
8-12 wk
1 Jun
19 Jun
0 wk
27 Jun
4 wk after
African marigold
Tagetes erecta
19 Apr – 3 May
23 May
6-8 wk
14 Jun
4 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Apr
28 May
6-8 wk
3 Jun
9 Jul
0 wk
12 Jul
6 wk after
Wood sage
Salvia nemorosa
23 Mar – 6 Apr
14 Apr
8-10 wk
1 Jun
9 Jun
0 wk
27 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
24 Apr – 22 May
6-10 wk
3 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
1 Jun
19 Jul
0 wk
26 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
5 – 19 Apr
14 May
8-10 wk
14 Jun
9 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
6 – 20 Apr
8 May
6-8 wk
1 Jun
19 Jun
0 wk
14 Jun
2 wk after