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Method
Rel. frost
Last spring frost (0°C) 3 Jun Frost 1 of 10 years · 20 years of data
Frost-free season 146 days 3 Jun – 27 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)
15 – 29 Apr
21 Jun
5-7 wk
3 Jun
26 Jul
0 wk
28 May
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Apr – 6 May
3 Jul
4-6 wk
3 Jun
31 Jul
0 wk
28 May
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
17 Mar – 14 Apr
20 Mar
8-12 wk
9 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 – 29 Apr
16 Jun
5-7 wk
3 Jun
21 Jul
0 wk
21 May
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
19 – 26 May
3-4 wk
16 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
31 May – 7 Jun
13 Jun
4-5 wk
5 Jul
11 Jul
5 wk after
14 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
14 – 21 Jun
3-4 wk
12 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Mar – 8 Apr
6 Apr
8-12 wk
3 Jun
0 wk
16 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
21 Jun
1 wk before
28 May
11 Jun
1 wk before
Maize
Zea mays
Fleece
12 – 19 May
3-4 wk
9 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 May
10 Jul
3-4 wk
5 Jun
31 Jul
0 wk
16 Jun
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 Jun
11 Jul
0 wk
21 May
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 – 29 Apr
16 Jun
5-7 wk
3 Jun
21 Jul
0 wk
21 May
11 Jul
2 wk before
Potato
Solanum tuberosum
27 Apr – 11 May
13 Jun
4-6 wk
8 Jun
11 Jul
1 wk after
8 Jun
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Apr
26 Jun
5-7 wk
3 Jun
31 Jul
0 wk
28 May
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
7 – 14 Jun
3-4 wk
5 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 May
5 Jul
3-4 wk
5 Jun
26 Jul
0 wk
16 Jun
16 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Apr – 6 May
28 Jun
4-6 wk
3 Jun
26 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 May
15 Jul
3-4 wk
3 Jun
5 Aug
0 wk
28 May
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Apr – 6 May
28 Jun
4-6 wk
3 Jun
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
7 Jun
2-4 wk
21 May
21 Jun
2 wk before
21 May
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
21 Jun
1 wk before
28 May
11 Jun
1 wk before
Spinach
Spinacia oleracea
6 – 13 May
30 Jul
3-4 wk
3 Jun
20 Aug
0 wk
14 May
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 Jul
4-6 wk
16 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
14 – 28 Apr
6-8 wk
9 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
19 May – 2 Jun
21 May
2-4 wk
16 Jun
2 wk after
14 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Apr – 6 May
28 Jun
4-6 wk
3 Jun
26 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 May
30 Jun
3-4 wk
3 Jun
21 Jul
0 wk
28 May
11 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
Fleece
5 – 19 May
17 May
4-6 wk
16 Jun
2 wk after
Lemon balm
Melissa officinalis
25 Mar – 8 Apr
26 May
8-10 wk
3 Jun
21 Jul
0 wk
29 Jun
11 Jul
4 wk after
Dill
Anethum graveolens
28 May
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Apr
9 Jun
6-8 wk
3 Jun
21 Jul
0 wk
28 May
11 Jul
1 wk before
Spearmint
Mentha spicata
11 Mar – 8 Apr
26 May
8-12 wk
3 Jun
21 Jul
0 wk
29 Jun
11 Jul
4 wk after
Coriander
Coriandrum sativum
3 Jun
20 Aug
0 wk
16 Jun
10 Aug
2 wk after
Garden sage
Salvia officinalis
27 Mar – 10 Apr
11 May
8-10 wk
5 Jun
6 Jul
0 wk
Common thyme
Thymus vulgaris
25 Mar – 8 Apr
16 May
8-10 wk
3 Jun
11 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Apr
30 May
6-8 wk
3 Jun
11 Jul
0 wk
29 Jun
1 Jul
4 wk after
Parsley
Petroselinum crispum
8 – 22 Apr
30 May
6-8 wk
3 Jun
11 Jul
0 wk
28 May
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
27 Feb – 27 Mar
12 Apr
10-14 wk
5 Jun
21 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
Fleece
19 – 26 May
24 May
3-4 wk
16 Jun
2 wk after
Cornflower
Centaurea cyanus
3 Jun
21 Jul
0 wk
28 May
11 Jul
1 wk before
Statice
Limonium sinuatum
7 – 21 Apr
23 Apr
8-10 wk
16 Jun
18 Jun
2 wk after
Sweet William
Dianthus barbatus
8 – 22 Apr
6-8 wk
3 Jun
0 wk
8 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Apr – 5 May
7 May
6-8 wk
16 Jun
18 Jun
2 wk after
16 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
19 Apr – 3 May
8 May
6-8 wk
14 Jun
19 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 May – 1 Jun
22 May
4-8 wk
29 Jun
4 wk after
29 Jun
4 wk after
Foxglove
Digitalis purpurea
25 Mar – 8 Apr
8-10 wk
3 Jun
0 wk
16 Jun
2 wk after
Busy lizzie
Impatiens walleriana
12 Apr – 10 May
4 Jun
8-12 wk
5 Jul
30 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
17 May
6-8 wk
16 Jun
28 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 May
4-6 wk
16 Jun
2 wk after
Chinese lantern
Physalis alkekengi
27 Mar – 10 Apr
26 Apr
8-10 wk
5 Jun
21 Jun
0 wk
Love in a mist
Nigella damascena
3 Jun
6 Jul
0 wk
28 May
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
21 Apr – 5 May
27 Apr
6-8 wk
16 Jun
2 wk after
16 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
13 Mar – 10 Apr
26 Apr
8-12 wk
5 Jun
21 Jun
0 wk
Cardoon
Cynara cardunculus
24 Mar – 21 Apr
27 Mar
8-12 wk
16 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
24 Mar – 21 Apr
9 Apr
8-12 wk
16 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
21 Apr – 5 May
23 Apr
6-8 wk
16 Jun
2 wk after
Corn poppy
Papaver rhoeas
3 Jun
21 Jul
0 wk
28 May
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Mar – 8 Apr
16 May
8-12 wk
3 Jun
11 Jul
0 wk
8 Jun
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
26 Apr – 10 May
3 May
8-10 wk
5 Jul
5 wk after
Sweet pea
Lathyrus odoratus
8 – 29 Apr
6 Jun
5-8 wk
3 Jun
11 Jul
0 wk
Stock
Matthiola incana
8 – 22 Apr
9 Jun
6-8 wk
3 Jun
21 Jul
0 wk
16 Jun
11 Jul
2 wk after
Wormwood
Artemisia absinthium
8 – 22 Apr
10 May
6-8 wk
3 Jun
21 Jun
0 wk
16 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
5 – 19 May
4-6 wk
16 Jun
2 wk after
Garden pansy
Viola × wittrockiana
25 Mar – 8 Apr
26 May
8-10 wk
3 Jun
21 Jul
0 wk
8 Jun
11 Jul
1 wk after
Petunia
Petunia
24 Mar – 21 Apr
23 Apr
8-12 wk
16 Jun
18 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Apr
10 May
6-8 wk
5 Jun
21 Jun
0 wk
14 Jul
6 wk after
Common zinnia
Zinnia elegans
5 – 19 May
17 May
4-6 wk
16 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
12 – 26 May
24 May
3-5 wk
16 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 May
22 May
4-6 wk
16 Jun
19 Jun
2 wk after
14 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
3 – 31 May
8-12 wk
26 Jul
8 wk after
Bee balm
Monarda didyma
11 Mar – 8 Apr
26 Apr
8-12 wk
3 Jun
21 Jun
0 wk
29 Jun
4 wk after
Yarrow
Achillea millefolium
8 – 22 Apr
10 Apr
6-8 wk
3 Jun
0 wk
16 Jun
2 wk after
Safflower
Carthamus tinctorius
3 Jun
21 Jun
0 wk
28 May
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Apr
30 May
6-8 wk
3 Jun
11 Jul
0 wk
18 Apr
1 Jul
7 wk before
Bishop's flower
Ammi majus
22 Apr – 6 May
13 Jun
4-6 wk
3 Jun
11 Jul
0 wk
16 Jun
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
24 Mar – 7 Apr
10-12 wk
16 Jun
2 wk after
Sunflower
Helianthus annuus
19 – 26 May
20 Jun
3-4 wk
16 Jun
11 Jul
2 wk after
29 Jun
1 Jul
4 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
9 Jun
6-8 wk
16 Jun
21 Jul
2 wk after
14 Jul
6 wk after
Annual phlox
Phlox drummondii
14 – 28 Apr
17 May
6-8 wk
9 Jun
28 Jun
1 wk after
14 Jul
6 wk after
Hollyhock
Alcea rosea
8 – 22 Apr
6-8 wk
3 Jun
0 wk
16 Jun
2 wk after
Alpine delphinium
Delphinium elatum
11 Mar – 8 Apr
26 Apr
8-12 wk
3 Jun
21 Jun
0 wk
29 Jun
4 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
17 May
6-8 wk
16 Jun
28 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Apr
30 May
6-8 wk
5 Jun
11 Jul
0 wk
14 Jul
6 wk after
Wood sage
Salvia nemorosa
25 Mar – 8 Apr
16 Apr
8-10 wk
3 Jun
11 Jun
0 wk
29 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
7 Apr – 5 May
3 May
6-10 wk
16 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
3 Jun
21 Jul
0 wk
28 May
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
7 – 21 Apr
16 May
8-10 wk
16 Jun
11 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Apr
10 May
6-8 wk
3 Jun
21 Jun
0 wk
16 Jun
2 wk after