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