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No frost in sight Last frost normally in 9 days (18 May), but frost-free in the forecast.
Method
Rel. frost
Last spring frost (0°C) 18 May Frost 1 of 10 years · 20 years of data
Frost-free season 156 days 18 May – 21 Oct
Probability that frost is over

90% = Half of years are frost-free by this date. More about frost & season →

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Vegetables

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