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Rel. frost
Last spring frost (0°C) 9 May Frost 1 of 4 years · 20 years of data
Frost-free season 162 days 9 May – 18 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)
21 Mar – 4 Apr
10 Jun
5-7 wk
9 May
15 Jul
0 wk
10 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
22 Jun
4-6 wk
9 May
20 Jul
0 wk
10 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
24 Feb – 24 Mar
21 Apr
8-12 wk
19 May
16 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Mar – 4 Apr
5 Jun
5-7 wk
9 May
10 Jul
0 wk
9 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Fleece
1 – 8 May
15 Jun
3-4 wk
29 May
6 Jul
3 wk after
Florence Fennel
Foeniculum vulgare
10 – 17 May
2 Jun
4-5 wk
14 Jun
30 Jun
5 wk after
21 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
26 May
3-4 wk
19 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Feb – 14 Mar
11 Mar
8-12 wk
9 May
0 wk
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Greenhouse
30 Apr
10 Jun
1 wk before
30 Apr
31 May
1 wk before
Maize
Zea mays
Fleece
21 – 28 Apr
5 Jun
3-4 wk
19 May
26 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
29 Jun
3-4 wk
14 May
20 Jul
1 wk after
22 May
10 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 May
30 Jun
0 wk
9 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Mar – 4 Apr
5 Jun
5-7 wk
9 May
10 Jul
0 wk
9 May
30 Jun
0 wk
Potato
Solanum tuberosum
Fleece
29 Mar – 12 Apr
18 May
4-6 wk
10 May
15 Jun
0 wk
10 May
5 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Mar – 4 Apr
15 Jun
5-7 wk
9 May
20 Jul
0 wk
10 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
17 – 24 May
20 Jun
3-4 wk
14 Jun
11 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
11 May
3-4 wk
14 May
1 Jun
1 wk after
22 May
22 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
17 Jun
4-6 wk
9 May
15 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Apr
4 Jul
3-4 wk
9 May
25 Jul
0 wk
10 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
17 Jun
4-6 wk
9 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
26 Mar – 9 Apr
27 May
2-4 wk
23 Apr
10 Jun
2 wk before
23 Apr
31 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Greenhouse
30 Apr
10 Jun
1 wk before
30 Apr
31 May
1 wk before
Spinach
Spinacia oleracea
11 – 18 Apr
19 Jul
3-4 wk
9 May
9 Aug
0 wk
6 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
24 Mar – 7 Apr
15 May
6-8 wk
19 May
26 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 May
22 Jun
2-4 wk
29 May
6 Jul
3 wk after
21 Jun
26 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
17 Jun
4-6 wk
9 May
15 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Apr
19 Jun
3-4 wk
9 May
10 Jul
0 wk
10 May
30 Jun
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
3 – 17 May
29 May
4-6 wk
14 Jun
26 Jun
5 wk after
Lemon balm
Melissa officinalis
28 Feb – 14 Mar
15 May
8-10 wk
9 May
10 Jul
0 wk
3 Jun
30 Jun
4 wk after
Dill
Anethum graveolens
10 May
20 Jul
0 wk
Wild chives
Allium schoenoprasum
14 – 28 Mar
29 May
6-8 wk
9 May
10 Jul
0 wk
10 May
30 Jun
0 wk
Spearmint
Mentha spicata
14 Feb – 14 Mar
15 May
8-12 wk
9 May
10 Jul
0 wk
3 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
9 May
9 Aug
0 wk
22 May
30 Jul
2 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
30 Apr
8-10 wk
14 May
25 Jun
1 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
5 May
8-10 wk
9 May
30 Jun
0 wk
Oregano
Origanum vulgare
14 – 28 Mar
19 May
6-8 wk
9 May
30 Jun
0 wk
3 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
14 – 28 Mar
19 May
6-8 wk
9 May
30 Jun
0 wk
10 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
1 Apr
10-14 wk
14 May
10 Jun
1 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
17 – 24 May
5 Jun
3-4 wk
14 Jun
26 Jun
5 wk after
Cornflower
Centaurea cyanus
9 May
10 Jul
0 wk
10 May
30 Jun
0 wk
Statice
Limonium sinuatum
20 Mar – 3 Apr
5 May
8-10 wk
29 May
30 Jun
3 wk after
Sweet William
Dianthus barbatus
14 – 28 Mar
6-8 wk
9 May
0 wk
19 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
3 wk after
15 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
27 Mar – 10 Apr
19 May
6-8 wk
22 May
30 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
27 Mar – 24 Apr
2 Jun
4-8 wk
22 May
30 Jun
2 wk after
22 May
20 Jun
2 wk after
Foxglove
Digitalis purpurea
28 Feb – 14 Mar
8-10 wk
9 May
0 wk
22 May
2 wk after
Busy lizzie
Impatiens walleriana
22 Mar – 19 Apr
26 Jun
8-12 wk
14 Jun
21 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 Apr
29 May
6-8 wk
29 May
10 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
17 Apr – 1 May
9 May
4-6 wk
29 May
6 Jun
3 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
15 Apr
8-10 wk
14 May
10 Jun
1 wk after
Love in a mist
Nigella damascena
9 May
25 Jun
0 wk
10 May
15 Jun
0 wk
Strawflower
Xerochrysum bracteatum
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
3 wk after
15 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
15 Apr
8-12 wk
14 May
10 Jun
1 wk after
Cardoon
Cynara cardunculus
6 Mar – 3 Apr
16 Mar
8-12 wk
29 May
3 wk after
Regal-foxtail
Ptilotus nobilis
22 Mar – 19 Apr
21 Apr
8-12 wk
14 Jun
16 Jun
5 wk after
Globe amaranth
Gomphrena globosa
19 Apr – 3 May
5 May
6-8 wk
14 Jun
16 Jun
5 wk after
Corn poppy
Papaver rhoeas
9 May
10 Jul
0 wk
10 May
30 Jun
0 wk
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
5 May
8-12 wk
9 May
30 Jun
0 wk
19 May
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
5 – 19 Apr
15 May
8-10 wk
14 Jun
10 Jul
5 wk after
Sweet pea
Lathyrus odoratus
14 Mar – 4 Apr
26 May
5-8 wk
9 May
30 Jun
0 wk
Stock
Matthiola incana
14 – 28 Mar
29 May
6-8 wk
9 May
10 Jul
0 wk
22 May
30 Jun
2 wk after
Wormwood
Artemisia absinthium
14 – 28 Mar
29 Apr
6-8 wk
9 May
10 Jun
0 wk
22 May
31 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
17 Apr – 1 May
24 May
4-6 wk
29 May
21 Jun
3 wk after
Garden pansy
Viola × wittrockiana
28 Feb – 14 Mar
15 May
8-10 wk
9 May
10 Jul
0 wk
19 May
30 Jun
1 wk after
Petunia
Petunia
6 Mar – 3 Apr
5 May
8-12 wk
29 May
30 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
29 Apr
6-8 wk
14 May
10 Jun
1 wk after
21 Jun
6 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
8 Jun
4-6 wk
29 May
6 Jul
3 wk after
Common morning glory
Ipomoea purpurea
10 – 24 May
5 Jun
3-5 wk
14 Jun
26 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
2 Jun
4-6 wk
29 May
30 Jun
3 wk after
21 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
29 Mar – 26 Apr
21 May
8-12 wk
21 Jun
16 Jul
6 wk after
Bee balm
Monarda didyma
14 Feb – 14 Mar
15 Apr
8-12 wk
9 May
10 Jun
0 wk
3 Jun
4 wk after
Yarrow
Achillea millefolium
14 – 28 Mar
30 Mar
6-8 wk
9 May
11 May
0 wk
22 May
2 wk after
Safflower
Carthamus tinctorius
9 May
10 Jun
0 wk
10 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Mar
19 May
6-8 wk
9 May
30 Jun
0 wk
23 Apr
20 Jun
2 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
2 Jun
4-6 wk
9 May
30 Jun
0 wk
22 May
20 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
6 – 20 Mar
1 Apr
10-12 wk
29 May
10 Jun
3 wk after
Sunflower
Helianthus annuus
1 – 8 May
9 Jun
3-4 wk
29 May
30 Jun
3 wk after
3 Jun
20 Jun
4 wk after
China aster
Callistephus chinensis
3 – 17 Apr
29 May
6-8 wk
29 May
10 Jul
3 wk after
21 Jun
30 Jun
6 wk after
Annual phlox
Phlox drummondii
24 Mar – 7 Apr
29 May
6-8 wk
19 May
10 Jul
1 wk after
21 Jun
30 Jun
6 wk after
Hollyhock
Alcea rosea
14 – 28 Mar
6-8 wk
9 May
0 wk
22 May
2 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
15 Apr
8-12 wk
9 May
10 Jun
0 wk
3 Jun
4 wk after
African marigold
Tagetes erecta
3 – 17 Apr
29 May
6-8 wk
29 May
10 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
19 May
6-8 wk
14 May
30 Jun
1 wk after
21 Jun
6 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
5 Apr
8-10 wk
9 May
31 May
0 wk
3 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
5 Apr – 3 May
15 May
6-10 wk
14 Jun
26 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
9 May
10 Jul
0 wk
10 May
30 Jun
0 wk
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
5 May
8-10 wk
29 May
30 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Mar
29 Apr
6-8 wk
9 May
10 Jun
0 wk
22 May
31 May
2 wk after