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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 3 of 4 years · 20 years of data
Frost-free season 139 days 7 May – 23 Sep
Probability that frost is over

25% = Half of years are frost-free by this date. More about frost & season →

Custom date
Note: This location has a shorter growing season. Plants marked with Fleece, Greenhouse or Season too short need extra protection or are difficult to grow here.

Vegetables

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