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Rel. frost
Last spring frost (0°C) 13 May Frost 1 of 4 years · 20 years of data
Frost-free season 153 days 13 May – 13 Oct
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)
26 Apr – 10 May
19 Jun
5-7 wk
14 Jun
24 Jul
5 wk after
7 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
21 Apr – 5 May
1 Jul
4-6 wk
2 Jun
29 Jul
3 wk after
7 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
31 Mar – 28 Apr
28 Apr
8-12 wk
23 Jun
23 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Feb – 9 Mar
14 Jun
5-7 wk
13 Apr
19 Jul
4 wk before
30 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
21 – 28 Jun
3-4 wk
19 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 Jun
4-5 wk
19 Jul
10 wk after
23 Jun
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
25 Jun – 2 Jul
3-4 wk
23 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
4 Apr
8-12 wk
13 May
30 May
Vid frost
26 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
7 May
19 Jun
1 wk before
7 May
9 Jun
1 wk before
Maize
Zea mays
10 – 17 Jun
3-4 wk
8 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 May
8 Jul
3-4 wk
14 Jun
29 Jul
5 wk after
26 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Feb – 9 Mar
14 Jun
5-7 wk
13 Apr
19 Jul
4 wk before
30 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
6 – 20 Apr
11 Jun
4-6 wk
18 May
9 Jul
1 wk after
18 May
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Feb – 9 Mar
24 Jun
5-7 wk
13 Apr
29 Jul
4 wk before
7 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 Jun
27 Jun
3-4 wk
19 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 May
23 Jun
3-4 wk
14 Jun
14 Jul
5 wk after
26 May
4 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Apr – 5 May
26 Jun
4-6 wk
2 Jun
24 Jul
3 wk after
Lettuce
Lactuca sativa
6 – 13 Apr
13 Jul
3-4 wk
4 May
3 Aug
1 wk before
7 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
26 Jun
4-6 wk
4 May
24 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
2 – 16 Apr
5 Jun
2-4 wk
30 Apr
19 Jun
2 wk before
30 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
7 May
19 Jun
1 wk before
7 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
26 Mar – 2 Apr
28 Jul
3-4 wk
23 Apr
18 Aug
3 wk before
23 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
11 wk after
Garden tomato
Solanum lycopersicum
13 – 27 May
6-8 wk
8 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 Jun
29 Jun
2-4 wk
8 Jul
13 Jul
8 wk after
23 Jun
3 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Apr – 5 May
26 Jun
4-6 wk
2 Jun
24 Jul
3 wk after
Garden pea
Pisum sativum
26 Mar – 2 Apr
28 Jun
3-4 wk
23 Apr
19 Jul
3 wk before
7 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
7 – 21 Jun
4-6 wk
19 Jul
10 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
24 May
8-10 wk
13 May
19 Jul
Vid frost
8 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
7 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
16 Feb – 2 Mar
7 Jun
6-8 wk
13 Apr
19 Jul
4 wk before
7 May
9 Jul
1 wk before
Spearmint
Mentha spicata
29 Jan – 26 Feb
24 May
8-12 wk
23 Apr
19 Jul
3 wk before
8 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
26 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
5 – 19 Apr
9 May
8-10 wk
14 Jun
4 Jul
5 wk after
Common thyme
Thymus vulgaris
24 Mar – 7 Apr
14 May
8-10 wk
2 Jun
9 Jul
3 wk after
Oregano
Origanum vulgare
27 Mar – 10 Apr
28 May
6-8 wk
22 May
9 Jul
1 wk after
8 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
26 Feb – 12 Mar
28 May
6-8 wk
23 Apr
9 Jul
3 wk before
7 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
8 Mar – 5 Apr
10 Apr
10-14 wk
14 Jun
19 Jun
5 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
21 – 28 Jun
3-4 wk
19 Jul
10 wk after
Cornflower
Centaurea cyanus
23 Apr
19 Jul
3 wk before
7 May
9 Jul
1 wk before
Statice
Limonium sinuatum
29 Apr – 13 May
14 May
8-10 wk
8 Jul
9 Jul
8 wk after
Sweet William
Dianthus barbatus
26 Feb – 12 Mar
6-8 wk
23 Apr
3 wk before
18 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 May
28 May
6-8 wk
8 Jul
9 Jul
8 wk after
26 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 May
28 May
6-8 wk
1 Jul
9 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
13 Apr – 11 May
11 Jun
4-8 wk
8 Jun
9 Jul
4 wk after
8 Jun
29 Jun
4 wk after
Foxglove
Digitalis purpurea
12 – 26 Feb
8-10 wk
23 Apr
3 wk before
26 May
2 wk after
Busy lizzie
Impatiens walleriana
26 Apr – 24 May
3 Jul
8-12 wk
19 Jul
28 Aug
10 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 May
7 Jun
6-8 wk
8 Jul
19 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 May – 10 Jun
4-6 wk
8 Jul
8 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Apr
24 Apr
8-10 wk
14 Jun
19 Jun
5 wk after
Love in a mist
Nigella damascena
7 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 May
18 May
6-8 wk
8 Jul
8 wk after
26 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
22 Mar – 19 Apr
24 Apr
8-12 wk
14 Jun
19 Jun
5 wk after
Cardoon
Cynara cardunculus
15 Apr – 13 May
8-12 wk
8 Jul
8 wk after
Regal-foxtail
Ptilotus nobilis
26 Apr – 24 May
28 Apr
8-12 wk
19 Jul
10 wk after
Globe amaranth
Gomphrena globosa
24 May – 7 Jun
6-8 wk
19 Jul
10 wk after
Corn poppy
Papaver rhoeas
7 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
14 May
8-12 wk
4 May
9 Jul
1 wk before
18 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 May
24 May
8-10 wk
19 Jul
19 Jul
10 wk after
Sweet pea
Lathyrus odoratus
26 Feb – 19 Mar
4 Jun
5-8 wk
23 Apr
9 Jul
3 wk before
Stock
Matthiola incana
9 – 23 Mar
7 Jun
6-8 wk
4 May
19 Jul
1 wk before
26 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
26 Feb – 12 Mar
8 May
6-8 wk
23 Apr
19 Jun
3 wk before
26 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 Jun
4-6 wk
19 Jul
10 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Feb
24 May
8-10 wk
13 Apr
19 Jul
4 wk before
18 May
9 Jul
1 wk after
Petunia
Petunia
15 Apr – 13 May
14 May
8-12 wk
8 Jul
9 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Apr – 3 May
8 May
6-8 wk
14 Jun
19 Jun
5 wk after
23 Jun
6 wk after
Common zinnia
Zinnia elegans
27 May – 10 Jun
15 Jun
4-6 wk
8 Jul
13 Jul
8 wk after
Common morning glory
Ipomoea purpurea
14 – 28 Jun
3-5 wk
19 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
27 May – 10 Jun
11 Jun
4-6 wk
8 Jul
9 Jul
8 wk after
23 Jun
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
3 – 31 May
28 May
8-12 wk
26 Jul
11 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
24 Apr
8-12 wk
13 May
19 Jun
Vid frost
8 Jun
9 Jun
4 wk after
Yarrow
Achillea millefolium
26 Feb – 12 Mar
8 Apr
6-8 wk
23 Apr
20 May
3 wk before
26 May
2 wk after
Safflower
Carthamus tinctorius
23 Apr
19 Jun
3 wk before
7 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
16 Feb – 2 Mar
28 May
6-8 wk
13 Apr
9 Jul
4 wk before
30 Apr
29 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
11 Jun
4-6 wk
28 May
9 Jul
2 wk after
26 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
15 – 29 Apr
10-12 wk
8 Jul
8 wk after
Sunflower
Helianthus annuus
10 – 17 Jun
18 Jun
3-4 wk
8 Jul
9 Jul
8 wk after
8 Jun
29 Jun
4 wk after
China aster
Callistephus chinensis
13 – 27 May
7 Jun
6-8 wk
8 Jul
19 Jul
8 wk after
23 Jun
9 Jul
6 wk after
Annual phlox
Phlox drummondii
28 Apr – 12 May
7 Jun
6-8 wk
23 Jun
19 Jul
6 wk after
23 Jun
9 Jul
6 wk after
Hollyhock
Alcea rosea
26 Feb – 12 Mar
6-8 wk
23 Apr
3 wk before
26 May
2 wk after
Alpine delphinium
Delphinium elatum
10 Mar – 7 Apr
24 Apr
8-12 wk
2 Jun
19 Jun
3 wk after
8 Jun
9 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 May
7 Jun
6-8 wk
8 Jul
19 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
19 Apr – 3 May
28 May
6-8 wk
14 Jun
9 Jul
5 wk after
23 Jun
29 Jun
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Mar
14 Apr
8-10 wk
22 May
9 Jun
1 wk after
8 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
10 May – 7 Jun
22 May
6-10 wk
19 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
7 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
29 Apr – 13 May
14 May
8-10 wk
8 Jul
9 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
26 Feb – 12 Mar
8 May
6-8 wk
23 Apr
19 Jun
3 wk before
26 May
9 Jun
2 wk after