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Method
Rel. frost
Last spring frost (0°C) 10 May Frost 3 of 4 years · 20 years of data
Frost-free season 131 days 10 May – 18 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)
22 Mar – 5 Apr
18 Jun
5-7 wk
10 May
23 Jul
0 wk
3 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
30 Jun
4-6 wk
10 May
28 Jul
0 wk
3 May
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
25 Feb – 25 Mar
5 Apr
8-12 wk
20 May
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Mar – 5 Apr
13 Jun
5-7 wk
10 May
18 Jul
0 wk
28 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
2 – 9 May
30 May
3-4 wk
30 May
20 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 May
19 May
4-5 wk
15 Jun
16 Jun
5 wk after
15 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
23 – 30 May
3-4 wk
20 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Feb – 15 Mar
13 Mar
8-12 wk
10 May
0 wk
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
3 May
28 May
1 wk before
3 May
18 May
1 wk before
Maize
Zea mays
Fleece
22 – 29 Apr
20 May
3-4 wk
20 May
10 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
1 Jul
3-4 wk
15 May
22 Jul
1 wk after
20 May
12 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
8 Jul
0 wk
28 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
13 Jun
5-7 wk
10 May
18 Jul
0 wk
28 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Apr
11 May
4-6 wk
15 May
8 Jun
1 wk after
15 May
29 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
23 Jun
5-7 wk
10 May
28 Jul
0 wk
3 May
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
18 – 25 May
4 Jun
3-4 wk
15 Jun
25 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
30 Apr
3-4 wk
15 May
21 May
1 wk after
20 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
12 Jul
3-4 wk
10 May
2 Aug
0 wk
3 May
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
31 Mar – 14 Apr
19 May
2-4 wk
28 Apr
2 Jun
2 wk before
28 Apr
23 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
3 May
28 May
1 wk before
3 May
18 May
1 wk before
Spinach
Spinacia oleracea
12 – 19 Apr
27 Jul
3-4 wk
10 May
17 Aug
0 wk
22 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
25 Mar – 8 Apr
29 Apr
6-8 wk
20 May
10 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
6 Jun
2-4 wk
30 May
20 Jun
3 wk after
15 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
27 Jun
3-4 wk
10 May
18 Jul
0 wk
3 May
8 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
18 Apr – 2 May
22 May
4-6 wk
30 May
19 Jun
3 wk after
Lemon balm
Melissa officinalis
1 – 15 Mar
23 May
8-10 wk
10 May
18 Jul
0 wk
31 May
8 Jul
3 wk after
Dill
Anethum graveolens
3 May
22 Jul
1 wk before
Wild chives
Allium schoenoprasum
15 – 29 Mar
6 Jun
6-8 wk
10 May
18 Jul
0 wk
3 May
8 Jul
1 wk before
Spearmint
Mentha spicata
15 Feb – 15 Mar
23 May
8-12 wk
10 May
18 Jul
0 wk
31 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
10 May
11 Aug
0 wk
20 May
1 Aug
1 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
8 May
8-10 wk
15 May
3 Jul
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
13 May
8-10 wk
10 May
8 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
27 May
6-8 wk
10 May
8 Jul
0 wk
31 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
27 May
6-8 wk
10 May
8 Jul
0 wk
3 May
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
27 Mar
10-14 wk
15 May
5 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
2 – 9 May
29 May
3-4 wk
30 May
19 Jun
3 wk after
Cornflower
Centaurea cyanus
10 May
18 Jul
0 wk
3 May
8 Jul
1 wk before
Statice
Limonium sinuatum
21 Mar – 4 Apr
19 Apr
8-10 wk
30 May
14 Jun
3 wk after
Sweet William
Dianthus barbatus
15 – 29 Mar
6-8 wk
10 May
0 wk
15 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
3 May
6-8 wk
30 May
14 Jun
3 wk after
18 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
28 Mar – 11 Apr
12 May
6-8 wk
23 May
23 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
5 Apr – 3 May
26 May
4-8 wk
31 May
23 Jun
3 wk after
31 May
13 Jun
3 wk after
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
0 wk
20 May
1 wk after
Busy lizzie
Impatiens walleriana
23 Mar – 20 Apr
9 Jun
8-12 wk
15 Jun
4 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
13 May
6-8 wk
30 May
24 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
22 Apr
4-6 wk
30 May
3 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
17 Apr
8-10 wk
15 May
12 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
3 Jul
0 wk
3 May
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
23 Apr
6-8 wk
30 May
4 Jun
3 wk after
18 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
17 Apr
8-12 wk
15 May
12 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
25 Feb – 25 Mar
24 Mar
8-12 wk
20 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
7 Mar – 4 Apr
14 Apr
8-12 wk
30 May
9 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
4 – 18 Apr
28 Apr
6-8 wk
30 May
9 Jun
3 wk after
Corn poppy
Papaver rhoeas
10 May
18 Jul
0 wk
3 May
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
13 May
8-12 wk
10 May
8 Jul
0 wk
15 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
6 – 20 Apr
29 Apr
8-10 wk
15 Jun
24 Jun
5 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
3 Jun
5-8 wk
10 May
8 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
6 Jun
6-8 wk
10 May
18 Jul
0 wk
20 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
7 May
6-8 wk
10 May
18 Jun
0 wk
20 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
18 Apr – 2 May
7 May
4-6 wk
30 May
4 Jun
3 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Mar
23 May
8-10 wk
10 May
18 Jul
0 wk
15 May
8 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
19 Apr
8-12 wk
30 May
14 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
1 May
6-8 wk
15 May
12 Jun
1 wk after
15 Jun
5 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
22 May
4-6 wk
30 May
19 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
25 Apr – 9 May
29 May
3-5 wk
30 May
19 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
26 May
4-6 wk
30 May
23 Jun
3 wk after
15 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
23 Mar – 20 Apr
14 May
8-12 wk
15 Jun
9 Jul
5 wk after
Bee balm
Monarda didyma
15 Feb – 15 Mar
23 Apr
8-12 wk
10 May
18 Jun
0 wk
31 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
7 Apr
6-8 wk
10 May
19 May
0 wk
20 May
1 wk after
Safflower
Carthamus tinctorius
10 May
18 Jun
0 wk
3 May
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
27 May
6-8 wk
10 May
8 Jul
0 wk
1 Apr
28 Jun
6 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
10 Jun
4-6 wk
10 May
8 Jul
0 wk
20 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
25 Feb – 11 Mar
4 Apr
10-12 wk
20 May
13 Jun
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
4 Jun
3-4 wk
30 May
25 Jun
3 wk after
31 May
15 Jun
3 wk after
China aster
Callistephus chinensis
4 – 18 Apr
24 May
6-8 wk
30 May
5 Jul
3 wk after
15 Jun
25 Jun
5 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
13 May
6-8 wk
20 May
24 Jun
1 wk after
15 Jun
5 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
0 wk
20 May
1 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
23 Apr
8-12 wk
10 May
18 Jun
0 wk
31 May
8 Jun
3 wk after
African marigold
Tagetes erecta
4 – 18 Apr
13 May
6-8 wk
30 May
24 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
14 May
6-8 wk
15 May
25 Jun
1 wk after
15 Jun
15 Jun
5 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
13 Apr
8-10 wk
10 May
8 Jun
0 wk
31 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
21 Mar – 18 Apr
8 May
6-10 wk
30 May
19 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
10 May
18 Jul
0 wk
3 May
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
21 Apr
8-10 wk
30 May
16 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
7 May
6-8 wk
10 May
18 Jun
0 wk
20 May
8 Jun
1 wk after