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No frost in sight Last frost normally in 9 days (15 May), but frost-free in the forecast.
Method
Rel. frost
Last spring frost (0°C) 15 May Frost 1 of 10 years · 20 years of data
Frost-free season 168 days 15 May – 30 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)
27 Mar – 10 Apr
21 Jun
5-7 wk
15 May
26 Jul
0 wk
9 May
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
3 Jul
4-6 wk
15 May
31 Jul
0 wk
9 May
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
10 Mar – 7 Apr
22 Mar
8-12 wk
2 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
16 Jun
5-7 wk
15 May
21 Jul
0 wk
2 May
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
14 – 21 May
16 May
3-4 wk
11 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
21 – 28 May
13 Jun
4-5 wk
25 Jun
11 Jul
6 wk after
25 Jun
1 Jul
6 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)
20 Feb – 20 Mar
6 Apr
8-12 wk
15 May
1 Jun
0 wk
28 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
9 May
21 Jun
1 wk before
9 May
11 Jun
1 wk before
Maize
Zea mays
Fleece
5 – 12 May
6 May
3-4 wk
2 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
10 Jul
3-4 wk
15 May
31 Jul
0 wk
28 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
11 Jul
0 wk
2 May
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
16 Jun
5-7 wk
15 May
21 Jul
0 wk
2 May
11 Jul
2 wk before
Potato
Solanum tuberosum
8 – 22 Apr
13 Jun
4-6 wk
20 May
11 Jul
1 wk after
20 May
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
26 Jun
5-7 wk
15 May
31 Jul
0 wk
9 May
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
8 Jul
3-4 wk
15 May
29 Jul
0 wk
28 May
19 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
28 Jun
4-6 wk
15 May
26 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
15 Jul
3-4 wk
15 May
5 Aug
0 wk
9 May
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
28 Jun
4-6 wk
15 May
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Apr
7 Jun
2-4 wk
2 May
21 Jun
2 wk before
2 May
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
9 May
21 Jun
1 wk before
9 May
11 Jun
1 wk before
Spinach
Spinacia oleracea
17 – 24 Apr
30 Jul
3-4 wk
15 May
20 Aug
0 wk
25 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
7 – 21 Apr
15 Apr
6-8 wk
2 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 May
23 May
2-4 wk
11 Jun
4 wk after
25 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
28 Jun
4-6 wk
15 May
26 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
30 Jun
3-4 wk
15 May
21 Jul
0 wk
9 May
11 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
30 Apr – 14 May
28 May
4-6 wk
11 Jun
25 Jun
4 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
26 May
8-10 wk
15 May
21 Jul
0 wk
10 Jun
11 Jul
4 wk after
Dill
Anethum graveolens
9 May
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
9 Jun
6-8 wk
15 May
21 Jul
0 wk
9 May
11 Jul
1 wk before
Spearmint
Mentha spicata
20 Feb – 20 Mar
26 May
8-12 wk
15 May
21 Jul
0 wk
10 Jun
11 Jul
4 wk after
Coriander
Coriandrum sativum
15 May
20 Aug
0 wk
28 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
11 May
8-10 wk
15 May
6 Jul
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
16 May
8-10 wk
15 May
11 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
30 May
6-8 wk
15 May
11 Jul
0 wk
10 Jun
1 Jul
4 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
30 May
6-8 wk
15 May
11 Jul
0 wk
9 May
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
12 Apr
10-14 wk
15 May
21 Jun
0 wk

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
14 – 21 May
4 Jun
3-4 wk
11 Jun
25 Jun
4 wk after
Cornflower
Centaurea cyanus
15 May
21 Jul
0 wk
9 May
11 Jul
1 wk before
Statice
Limonium sinuatum
2 – 16 Apr
27 Apr
8-10 wk
11 Jun
22 Jun
4 wk after
Sweet William
Dianthus barbatus
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
20 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
16 – 30 Apr
11 May
6-8 wk
11 Jun
22 Jun
4 wk after
28 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
18 May
6-8 wk
6 Jun
29 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Apr – 13 May
1 Jun
4-8 wk
10 Jun
29 Jun
4 wk after
10 Jun
19 Jun
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Mar
8-10 wk
15 May
0 wk
28 May
2 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Apr
15 Jun
8-12 wk
25 Jun
10 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
21 May
6-8 wk
11 Jun
2 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
30 Apr – 14 May
4-6 wk
11 Jun
4 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
26 Apr
8-10 wk
15 May
21 Jun
0 wk
Love in a mist
Nigella damascena
15 May
6 Jul
0 wk
9 May
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
16 – 30 Apr
1 May
6-8 wk
11 Jun
12 Jun
4 wk after
28 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
26 Apr
8-12 wk
15 May
21 Jun
0 wk
Cardoon
Cynara cardunculus
19 Mar – 16 Apr
27 Mar
8-12 wk
11 Jun
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
19 Mar – 16 Apr
20 Apr
8-12 wk
11 Jun
15 Jun
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
16 – 30 Apr
4 May
6-8 wk
11 Jun
15 Jun
4 wk after
Corn poppy
Papaver rhoeas
15 May
21 Jul
0 wk
9 May
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
16 May
8-12 wk
15 May
11 Jul
0 wk
20 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
16 – 30 Apr
7 May
8-10 wk
25 Jun
2 Jul
6 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
6 Jun
5-8 wk
15 May
11 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
9 Jun
6-8 wk
15 May
21 Jul
0 wk
28 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
10 May
6-8 wk
15 May
21 Jun
0 wk
28 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
30 Apr – 14 May
13 May
4-6 wk
11 Jun
4 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Mar
26 May
8-10 wk
15 May
21 Jul
0 wk
20 May
11 Jul
1 wk after
Petunia
Petunia
19 Mar – 16 Apr
27 Apr
8-12 wk
11 Jun
22 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
10 May
6-8 wk
15 May
21 Jun
0 wk
25 Jun
6 wk after
Common zinnia
Zinnia elegans
30 Apr – 14 May
28 May
4-6 wk
11 Jun
25 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
7 – 21 May
4 Jun
3-5 wk
11 Jun
25 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
30 Apr – 14 May
1 Jun
4-6 wk
11 Jun
29 Jun
4 wk after
25 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
2 – 30 Apr
20 May
8-12 wk
25 Jun
15 Jul
6 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
26 Apr
8-12 wk
15 May
21 Jun
0 wk
10 Jun
11 Jun
4 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
10 Apr
6-8 wk
15 May
22 May
0 wk
28 May
2 wk after
Safflower
Carthamus tinctorius
15 May
21 Jun
0 wk
9 May
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
30 May
6-8 wk
15 May
11 Jul
0 wk
30 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
13 Jun
4-6 wk
15 May
11 Jul
0 wk
28 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
19 Mar – 2 Apr
31 Mar
10-12 wk
11 Jun
4 wk after
Sunflower
Helianthus annuus
14 – 21 May
20 Jun
3-4 wk
11 Jun
11 Jul
4 wk after
10 Jun
1 Jul
4 wk after
China aster
Callistephus chinensis
16 – 30 Apr
9 Jun
6-8 wk
11 Jun
21 Jul
4 wk after
25 Jun
11 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
21 May
6-8 wk
2 Jun
2 Jul
3 wk after
25 Jun
6 wk after
Hollyhock
Alcea rosea
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
28 May
2 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
26 Apr
8-12 wk
15 May
21 Jun
0 wk
10 Jun
11 Jun
4 wk after
African marigold
Tagetes erecta
16 – 30 Apr
21 May
6-8 wk
11 Jun
2 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
30 May
6-8 wk
15 May
11 Jul
0 wk
25 Jun
1 Jul
6 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
16 Apr
8-10 wk
15 May
11 Jun
0 wk
10 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
2 – 30 Apr
14 May
6-10 wk
11 Jun
25 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
15 May
21 Jul
0 wk
9 May
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 Apr
16 May
8-10 wk
11 Jun
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
10 May
6-8 wk
15 May
21 Jun
0 wk
28 May
11 Jun
2 wk after