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Method
Rel. frost
Last spring frost (0°C) 30 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 161 days 30 Apr – 8 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)
12 – 26 Mar
21 Jun
5-7 wk
30 Apr
26 Jul
0 wk
24 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Mar – 2 Apr
3 Jul
4-6 wk
30 Apr
31 Jul
0 wk
24 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
4 Mar – 1 Apr
16 Apr
8-12 wk
27 May
11 Jun
4 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Mar
16 Jun
5-7 wk
30 Apr
21 Jul
0 wk
17 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
13 – 20 May
10 Jun
3-4 wk
10 Jun
1 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 May
9 Jun
4-5 wk
10 Jun
7 Jul
6 wk after
10 Jun
27 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
23 – 30 May
1 Jun
3-4 wk
20 Jun
22 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Feb – 5 Mar
6 Apr
8-12 wk
30 Apr
1 Jun
0 wk
13 May
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 Apr
21 Jun
1 wk before
24 Apr
11 Jun
1 wk before
Maize
Zea mays
29 Apr – 6 May
31 May
3-4 wk
27 May
21 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 Apr
10 Jul
3-4 wk
30 Apr
31 Jul
0 wk
13 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 Apr
11 Jul
0 wk
17 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Mar
16 Jun
5-7 wk
30 Apr
21 Jul
0 wk
17 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
24 Mar – 7 Apr
9 Jun
4-6 wk
5 May
7 Jul
1 wk after
5 May
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Mar
26 Jun
5-7 wk
30 Apr
31 Jul
0 wk
24 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
13 – 20 May
27 Jun
3-4 wk
10 Jun
18 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 Apr
21 Jun
3-4 wk
30 Apr
12 Jul
0 wk
13 May
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Mar – 2 Apr
28 Jun
4-6 wk
30 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 Apr
15 Jul
3-4 wk
30 Apr
5 Aug
0 wk
24 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Mar – 2 Apr
28 Jun
4-6 wk
30 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Mar – 3 Apr
7 Jun
2-4 wk
17 Apr
21 Jun
2 wk before
17 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Apr
21 Jun
1 wk before
24 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
2 – 9 Apr
30 Jul
3-4 wk
30 Apr
20 Aug
0 wk
10 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
11 wk after
Garden tomato
Solanum lycopersicum
1 – 15 Apr
10 May
6-8 wk
27 May
21 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
29 Apr – 13 May
29 Jun
2-4 wk
27 May
13 Jul
4 wk after
10 Jun
3 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Mar – 2 Apr
28 Jun
4-6 wk
30 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 Apr
30 Jun
3-4 wk
30 Apr
21 Jul
0 wk
24 Apr
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
29 Apr – 13 May
5 Jun
4-6 wk
10 Jun
3 Jul
6 wk after
Lemon balm
Melissa officinalis
19 Feb – 5 Mar
26 May
8-10 wk
30 Apr
21 Jul
0 wk
26 May
11 Jul
4 wk after
Dill
Anethum graveolens
24 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Mar
9 Jun
6-8 wk
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
5 Feb – 5 Mar
26 May
8-12 wk
30 Apr
21 Jul
0 wk
26 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
30 Apr
20 Aug
0 wk
13 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
19 Feb – 5 Mar
11 May
8-10 wk
30 Apr
6 Jul
0 wk
Common thyme
Thymus vulgaris
19 Feb – 5 Mar
16 May
8-10 wk
30 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Mar
30 May
6-8 wk
30 Apr
11 Jul
0 wk
26 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
5 – 19 Mar
30 May
6-8 wk
30 Apr
11 Jul
0 wk
24 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
22 Jan – 19 Feb
11 Apr
10-14 wk
30 Apr
20 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
13 – 20 May
12 Jun
3-4 wk
10 Jun
3 Jul
6 wk after
Cornflower
Centaurea cyanus
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
18 Mar – 1 Apr
10 May
8-10 wk
27 May
5 Jul
4 wk after
Sweet William
Dianthus barbatus
5 – 19 Mar
6-8 wk
30 Apr
0 wk
5 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
1 – 15 Apr
24 May
6-8 wk
27 May
5 Jul
4 wk after
13 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
27 Mar – 10 Apr
27 May
6-8 wk
22 May
8 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
31 Mar – 28 Apr
10 Jun
4-8 wk
26 May
8 Jul
4 wk after
26 May
28 Jun
4 wk after
Foxglove
Digitalis purpurea
19 Feb – 5 Mar
8-10 wk
30 Apr
0 wk
13 May
2 wk after
Busy lizzie
Impatiens walleriana
18 Mar – 15 Apr
2 Jul
8-12 wk
10 Jun
27 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
1 – 15 Apr
3 Jun
6-8 wk
27 May
15 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
15 – 29 Apr
15 May
4-6 wk
27 May
12 Jun
4 wk after
Chinese lantern
Physalis alkekengi
19 Feb – 5 Mar
26 Apr
8-10 wk
30 Apr
21 Jun
0 wk
Love in a mist
Nigella damascena
30 Apr
6 Jul
0 wk
24 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
1 – 15 Apr
14 May
6-8 wk
27 May
25 Jun
4 wk after
13 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
5 Feb – 5 Mar
26 Apr
8-12 wk
30 Apr
21 Jun
0 wk
Cardoon
Cynara cardunculus
4 Mar – 1 Apr
27 Mar
8-12 wk
27 May
4 wk after
Regal-foxtail
Ptilotus nobilis
18 Mar – 15 Apr
28 Apr
8-12 wk
10 Jun
23 Jun
6 wk after
Globe amaranth
Gomphrena globosa
15 – 29 Apr
12 May
6-8 wk
10 Jun
23 Jun
6 wk after
Corn poppy
Papaver rhoeas
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Feb – 5 Mar
16 May
8-12 wk
30 Apr
11 Jul
0 wk
5 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
1 – 15 Apr
20 May
8-10 wk
10 Jun
15 Jul
6 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Mar
6 Jun
5-8 wk
30 Apr
11 Jul
0 wk
Stock
Matthiola incana
5 – 19 Mar
9 Jun
6-8 wk
30 Apr
21 Jul
0 wk
13 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
5 – 19 Mar
10 May
6-8 wk
30 Apr
21 Jun
0 wk
13 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
29 Apr – 13 May
21 May
4-6 wk
10 Jun
18 Jun
6 wk after
Garden pansy
Viola × wittrockiana
19 Feb – 5 Mar
26 May
8-10 wk
30 Apr
21 Jul
0 wk
5 May
11 Jul
1 wk after
Petunia
Petunia
4 Mar – 1 Apr
10 May
8-12 wk
27 May
5 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Mar
10 May
6-8 wk
30 Apr
21 Jun
0 wk
10 Jun
11 Jun
6 wk after
Common zinnia
Zinnia elegans
15 – 29 Apr
14 Jun
4-6 wk
27 May
12 Jul
4 wk after
Common morning glory
Ipomoea purpurea
6 – 20 May
12 Jun
3-5 wk
10 Jun
3 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
15 – 29 Apr
10 Jun
4-6 wk
27 May
8 Jul
4 wk after
10 Jun
28 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
5 Apr – 3 May
28 May
8-12 wk
28 Jun
23 Jul
8 wk after
Bee balm
Monarda didyma
5 Feb – 5 Mar
26 Apr
8-12 wk
30 Apr
21 Jun
0 wk
26 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
5 – 19 Mar
10 Apr
6-8 wk
30 Apr
22 May
0 wk
13 May
2 wk after
Safflower
Carthamus tinctorius
30 Apr
21 Jun
0 wk
24 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Mar
30 May
6-8 wk
30 Apr
11 Jul
0 wk
15 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
19 Mar – 2 Apr
13 Jun
4-6 wk
30 Apr
11 Jul
0 wk
13 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
18 Mar – 1 Apr
3 Apr
10-12 wk
10 Jun
12 Jun
6 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
19 Jun
3-4 wk
27 May
10 Jul
4 wk after
26 May
30 Jun
4 wk after
China aster
Callistephus chinensis
1 – 15 Apr
8 Jun
6-8 wk
27 May
20 Jul
4 wk after
10 Jun
10 Jul
6 wk after
Annual phlox
Phlox drummondii
23 Mar – 6 Apr
3 Jun
6-8 wk
18 May
15 Jul
3 wk after
10 Jun
5 Jul
6 wk after
Hollyhock
Alcea rosea
5 – 19 Mar
6-8 wk
30 Apr
0 wk
13 May
2 wk after
Alpine delphinium
Delphinium elatum
5 Feb – 5 Mar
26 Apr
8-12 wk
30 Apr
21 Jun
0 wk
26 May
11 Jun
4 wk after
African marigold
Tagetes erecta
1 – 15 Apr
3 Jun
6-8 wk
27 May
15 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Mar
29 May
6-8 wk
30 Apr
10 Jul
0 wk
10 Jun
30 Jun
6 wk after
Wood sage
Salvia nemorosa
19 Feb – 5 Mar
16 Apr
8-10 wk
30 Apr
11 Jun
0 wk
26 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
1 – 29 Apr
22 May
6-10 wk
10 Jun
3 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
12 May
8-10 wk
27 May
7 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Mar
10 May
6-8 wk
30 Apr
21 Jun
0 wk
13 May
11 Jun
2 wk after