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Rel. frost
Last spring frost (0°C) 15 May Frost 1 of 4 years · 20 years of data
Frost-free season 159 days 15 May – 21 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)
28 Apr – 12 May
14 Jun
5-7 wk
16 Jun
19 Jul
5 wk after
19 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
22 Apr – 6 May
26 Jun
4-6 wk
3 Jun
24 Jul
3 wk after
19 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
7 Apr – 5 May
18 Apr
8-12 wk
30 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Mar
9 Jun
5-7 wk
26 Apr
14 Jul
3 wk before
15 May
4 Jul
Vid frost
Garden cucumber
Cucumis sativus
8 – 15 Jun
12 Jun
3-4 wk
6 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 Jun
6 Jun
4-5 wk
6 Jul
7 wk after
3 Jul
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
9 – 16 Jun
3-4 wk
7 Jul
8 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Feb – 20 Mar
30 Mar
8-12 wk
15 May
25 May
Vid frost
5 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
14 Jun
1 wk after
19 May
4 Jun
1 wk after
Maize
Zea mays
2 – 9 Jun
2 Jun
3-4 wk
30 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 May
3 Jul
3-4 wk
16 Jun
24 Jul
5 wk after
5 Jun
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
24 Jun
Vid frost
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Mar
9 Jun
5-7 wk
26 Apr
14 Jul
3 wk before
15 May
4 Jul
Vid frost
Potato
Solanum tuberosum
19 Apr – 3 May
3 Jun
4-6 wk
31 May
1 Jul
2 wk after
31 May
21 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Mar
19 Jun
5-7 wk
26 Apr
24 Jul
3 wk before
19 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
8 – 15 Jun
23 Jun
3-4 wk
6 Jul
14 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 May
16 Jun
3-4 wk
16 Jun
7 Jul
5 wk after
5 Jun
27 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Apr – 6 May
21 Jun
4-6 wk
3 Jun
19 Jul
3 wk after
Lettuce
Lactuca sativa
11 – 18 Apr
8 Jul
3-4 wk
9 May
29 Jul
1 wk before
19 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
21 Jun
4-6 wk
9 May
19 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
31 May
2-4 wk
15 May
14 Jun
Vid frost
15 May
4 Jun
Vid frost
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
14 Jun
1 wk after
19 May
4 Jun
1 wk after
Spinach
Spinacia oleracea
4 – 11 Apr
23 Jul
3-4 wk
2 May
13 Aug
2 wk before
11 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
11 wk after
Garden tomato
Solanum lycopersicum
5 – 19 May
12 May
6-8 wk
30 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 Jun
25 Jun
2-4 wk
30 Jun
9 Jul
7 wk after
3 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Apr – 6 May
21 Jun
4-6 wk
3 Jun
19 Jul
3 wk after
Garden pea
Pisum sativum
4 – 11 Apr
23 Jun
3-4 wk
2 May
14 Jul
2 wk before
19 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
25 May – 8 Jun
1 Jun
4-6 wk
6 Jul
7 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
19 May
8-10 wk
15 May
14 Jul
Vid frost
19 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
19 May
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
1 – 15 Mar
2 Jun
6-8 wk
26 Apr
14 Jul
3 wk before
19 May
4 Jul
1 wk after
Spearmint
Mentha spicata
7 Feb – 7 Mar
19 May
8-12 wk
2 May
14 Jul
2 wk before
19 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
5 Jun
3 Aug
3 wk after
Garden sage
Salvia officinalis
7 – 21 Apr
4 May
8-10 wk
16 Jun
29 Jun
5 wk after
Common thyme
Thymus vulgaris
25 Mar – 8 Apr
9 May
8-10 wk
3 Jun
4 Jul
3 wk after
Oregano
Origanum vulgare
25 Mar – 8 Apr
23 May
6-8 wk
20 May
4 Jul
1 wk after
19 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
7 – 21 Mar
23 May
6-8 wk
2 May
4 Jul
2 wk before
19 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
10 Mar – 7 Apr
5 Apr
10-14 wk
16 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
8 – 15 Jun
8 Jun
3-4 wk
6 Jul
7 wk after
Cornflower
Centaurea cyanus
2 May
14 Jul
2 wk before
19 May
4 Jul
1 wk after
Statice
Limonium sinuatum
21 Apr – 5 May
9 May
8-10 wk
30 Jun
4 Jul
7 wk after
Sweet William
Dianthus barbatus
7 – 21 Mar
6-8 wk
2 May
2 wk before
31 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 May
23 May
6-8 wk
30 Jun
4 Jul
7 wk after
28 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 May
23 May
6-8 wk
27 Jun
4 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Apr – 22 May
6 Jun
4-8 wk
19 Jun
4 Jul
5 wk after
19 Jun
24 Jun
5 wk after
Foxglove
Digitalis purpurea
21 Feb – 7 Mar
8-10 wk
2 May
2 wk before
5 Jun
3 wk after
Busy lizzie
Impatiens walleriana
13 Apr – 11 May
29 Jun
8-12 wk
6 Jul
24 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 May
2 Jun
6-8 wk
30 Jun
14 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 May – 2 Jun
4-6 wk
30 Jun
7 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Apr
19 Apr
8-10 wk
16 Jun
5 wk after
Love in a mist
Nigella damascena
19 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
5 – 19 May
13 May
6-8 wk
30 Jun
7 wk after
28 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
24 Mar – 21 Apr
19 Apr
8-12 wk
16 Jun
5 wk after
Cardoon
Cynara cardunculus
7 Apr – 5 May
8-12 wk
30 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
13 Apr – 11 May
24 Apr
8-12 wk
6 Jul
7 wk after
Globe amaranth
Gomphrena globosa
11 – 25 May
6-8 wk
6 Jul
7 wk after
Corn poppy
Papaver rhoeas
19 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
9 May
8-12 wk
9 May
4 Jul
1 wk before
31 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
27 Apr – 11 May
19 May
8-10 wk
6 Jul
14 Jul
7 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Mar
30 May
5-8 wk
2 May
4 Jul
2 wk before
Stock
Matthiola incana
14 – 28 Mar
2 Jun
6-8 wk
9 May
14 Jul
1 wk before
5 Jun
4 Jul
3 wk after
Wormwood
Artemisia absinthium
7 – 21 Mar
3 May
6-8 wk
2 May
14 Jun
2 wk before
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
19 May – 2 Jun
27 May
4-6 wk
30 Jun
7 wk after
Garden pansy
Viola × wittrockiana
15 Feb – 1 Mar
19 May
8-10 wk
26 Apr
14 Jul
3 wk before
31 May
4 Jul
2 wk after
Petunia
Petunia
7 Apr – 5 May
9 May
8-12 wk
30 Jun
4 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
21 Apr – 5 May
3 May
6-8 wk
16 Jun
5 wk after
3 Jul
7 wk after
Common zinnia
Zinnia elegans
19 May – 2 Jun
11 Jun
4-6 wk
30 Jun
9 Jul
7 wk after
Common morning glory
Ipomoea purpurea
1 – 15 Jun
8 Jun
3-5 wk
6 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
19 May – 2 Jun
6 Jun
4-6 wk
30 Jun
4 Jul
7 wk after
3 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
14 Apr – 12 May
24 May
8-12 wk
7 Jul
19 Jul
8 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
19 Apr
8-12 wk
15 May
14 Jun
Vid frost
19 Jun
5 wk after
Yarrow
Achillea millefolium
7 – 21 Mar
3 Apr
6-8 wk
2 May
15 May
2 wk before
5 Jun
3 wk after
Safflower
Carthamus tinctorius
2 May
14 Jun
2 wk before
19 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
1 – 15 Mar
23 May
6-8 wk
26 Apr
4 Jul
3 wk before
15 May
24 Jun
Vid frost
Bishop's flower
Ammi majus
13 – 27 Apr
6 Jun
4-6 wk
25 May
4 Jul
1 wk after
5 Jun
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
7 – 21 Apr
10-12 wk
30 Jun
7 wk after
Sunflower
Helianthus annuus
2 – 9 Jun
13 Jun
3-4 wk
30 Jun
4 Jul
7 wk after
19 Jun
24 Jun
5 wk after
China aster
Callistephus chinensis
5 – 19 May
2 Jun
6-8 wk
30 Jun
14 Jul
7 wk after
3 Jul
4 Jul
7 wk after
Annual phlox
Phlox drummondii
26 Apr – 10 May
2 Jun
6-8 wk
21 Jun
14 Jul
5 wk after
3 Jul
4 Jul
7 wk after
Hollyhock
Alcea rosea
7 – 21 Mar
6-8 wk
2 May
2 wk before
5 Jun
3 wk after
Alpine delphinium
Delphinium elatum
11 Mar – 8 Apr
19 Apr
8-12 wk
3 Jun
14 Jun
3 wk after
19 Jun
5 wk after
African marigold
Tagetes erecta
5 – 19 May
2 Jun
6-8 wk
30 Jun
14 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
21 Apr – 5 May
23 May
6-8 wk
16 Jun
4 Jul
5 wk after
3 Jul
7 wk after
Wood sage
Salvia nemorosa
11 – 25 Mar
9 Apr
8-10 wk
20 May
4 Jun
1 wk after
19 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
27 Apr – 25 May
18 May
6-10 wk
6 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
19 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
21 Apr – 5 May
9 May
8-10 wk
30 Jun
4 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Mar
3 May
6-8 wk
2 May
14 Jun
2 wk before
5 Jun
3 wk after