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-1.2°
Last 24h: Slight frost recorded tonight at 03:00. Inspect for frost damage
Method
Rel. frost
Last spring frost (0°C) 18 May Frost 3 of 4 years · 20 years of data
Frost-free season 108 days 18 May – 3 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)
30 Mar – 13 Apr
12 Jun
5-7 wk
18 May
17 Jul
0 wk
19 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
24 Jun
4-6 wk
18 May
22 Jul
0 wk
19 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
6 Mar – 3 Apr
29 Mar
8-12 wk
29 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
7 Jun
5-7 wk
18 May
12 Jul
0 wk
18 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
10 – 17 May
23 May
3-4 wk
7 Jun
13 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
3 – 10 May
23 May
4-5 wk
7 Jun
20 Jun
3 wk after
12 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
31 May – 7 Jun
3-4 wk
28 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Feb – 23 Mar
20 Mar
8-12 wk
18 May
0 wk
31 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
4 Jun
0 wk
19 May
25 May
0 wk
Maize
Zea mays
Fleece
1 – 8 May
13 May
3-4 wk
29 May
3 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
19 Jun
3-4 wk
24 May
10 Jul
1 wk after
31 May
30 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
2 Jul
0 wk
18 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
7 Jun
5-7 wk
18 May
12 Jul
0 wk
18 May
2 Jul
0 wk
Potato
Solanum tuberosum
16 – 30 Apr
18 May
4-6 wk
28 May
15 Jun
1 wk after
28 May
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
17 Jun
5-7 wk
18 May
22 Jul
0 wk
19 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
24 – 31 May
28 May
3-4 wk
21 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Apr – 3 May
25 May
3-4 wk
24 May
15 Jun
1 wk after
31 May
5 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
19 Jun
4-6 wk
18 May
17 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
6 Jul
3-4 wk
18 May
27 Jul
0 wk
19 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
19 Jun
4-6 wk
18 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Apr – 4 May
26 May
2-4 wk
18 May
9 Jun
0 wk
18 May
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
4 Jun
0 wk
19 May
25 May
0 wk
Spinach
Spinacia oleracea
20 – 27 Apr
21 Jul
3-4 wk
18 May
11 Aug
0 wk
15 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
12 – 26 Jun
4-6 wk
24 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
3 – 17 Apr
22 Apr
6-8 wk
29 May
3 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 May
30 May
2-4 wk
7 Jun
13 Jun
3 wk after
30 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
19 Jun
4-6 wk
18 May
17 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
21 Jun
3-4 wk
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
26 Apr – 10 May
19 May
4-6 wk
7 Jun
16 Jun
3 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
17 May
8-10 wk
18 May
12 Jul
0 wk
12 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
19 May
10 Jul
0 wk
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
31 May
6-8 wk
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Spearmint
Mentha spicata
23 Feb – 23 Mar
17 May
8-12 wk
18 May
12 Jul
0 wk
12 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
18 May
30 Jul
0 wk
31 May
20 Jul
2 wk after
Garden sage
Salvia officinalis
15 – 29 Mar
2 May
8-10 wk
24 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
9 – 23 Mar
7 May
8-10 wk
18 May
2 Jul
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
21 May
6-8 wk
18 May
2 Jul
0 wk
12 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
21 May
6-8 wk
18 May
2 Jul
0 wk
19 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
15 Feb – 15 Mar
16 Mar
10-14 wk
24 May
25 May
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
10 – 17 May
26 May
3-4 wk
7 Jun
16 Jun
3 wk after
Cornflower
Centaurea cyanus
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Statice
Limonium sinuatum
29 Mar – 12 Apr
18 Apr
8-10 wk
7 Jun
13 Jun
3 wk after
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Apr
2 May
6-8 wk
7 Jun
13 Jun
3 wk after
24 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
7 – 21 Apr
9 May
6-8 wk
2 Jun
20 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Apr – 15 May
23 May
4-8 wk
12 Jun
20 Jun
4 wk after
12 Jun
4 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
31 May
2 wk after
Busy lizzie
Impatiens walleriana
29 Mar – 26 Apr
6 Jun
8-12 wk
21 Jun
1 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Apr
12 May
6-8 wk
7 Jun
23 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
4-6 wk
7 Jun
3 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Mar
5 Apr
8-10 wk
24 May
31 May
1 wk after
Love in a mist
Nigella damascena
18 May
27 Jun
0 wk
19 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
12 – 26 Apr
22 Apr
6-8 wk
7 Jun
3 wk after
24 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Mar
5 Apr
8-12 wk
24 May
31 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
27 Feb – 27 Mar
18 Mar
8-12 wk
22 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
15 Mar – 12 Apr
11 Apr
8-12 wk
7 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
12 – 26 Apr
25 Apr
6-8 wk
7 Jun
3 wk after
Corn poppy
Papaver rhoeas
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
7 May
8-12 wk
18 May
2 Jul
0 wk
28 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
12 – 26 Apr
28 Apr
8-10 wk
21 Jun
23 Jun
5 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
28 May
5-8 wk
18 May
2 Jul
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
31 May
6-8 wk
18 May
12 Jul
0 wk
31 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
1 May
6-8 wk
18 May
12 Jun
0 wk
31 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
17 Apr – 1 May
18 May
4-6 wk
29 May
15 Jun
2 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Mar
17 May
8-10 wk
18 May
12 Jul
0 wk
28 May
2 Jul
1 wk after
Petunia
Petunia
15 Mar – 12 Apr
18 Apr
8-12 wk
7 Jun
13 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Mar – 12 Apr
19 Apr
6-8 wk
24 May
31 May
1 wk after
30 Jun
6 wk after
Common zinnia
Zinnia elegans
26 Apr – 10 May
19 May
4-6 wk
7 Jun
16 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
3 – 17 May
26 May
3-5 wk
7 Jun
16 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
26 Apr – 10 May
23 May
4-6 wk
7 Jun
20 Jun
3 wk after
30 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
29 Mar – 26 Apr
11 May
8-12 wk
21 Jun
6 Jul
5 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
17 Apr
8-12 wk
18 May
12 Jun
0 wk
12 Jun
4 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
1 Apr
6-8 wk
18 May
0 wk
31 May
2 wk after
Safflower
Carthamus tinctorius
18 May
12 Jun
0 wk
19 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
21 May
6-8 wk
18 May
2 Jul
0 wk
2 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
4 Jun
4-6 wk
18 May
2 Jul
0 wk
31 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
6 – 20 Mar
27 Mar
10-12 wk
29 May
5 Jun
2 wk after
Sunflower
Helianthus annuus
10 – 17 May
24 May
3-4 wk
7 Jun
14 Jun
3 wk after
12 Jun
4 wk after
China aster
Callistephus chinensis
12 – 26 Apr
13 May
6-8 wk
7 Jun
24 Jun
3 wk after
30 Jun
6 wk after
Annual phlox
Phlox drummondii
3 – 17 Apr
12 May
6-8 wk
29 May
23 Jun
2 wk after
30 Jun
6 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
31 May
2 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
17 Apr
8-12 wk
18 May
12 Jun
0 wk
12 Jun
4 wk after
African marigold
Tagetes erecta
12 – 26 Apr
12 May
6-8 wk
7 Jun
23 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
29 Mar – 12 Apr
3 May
6-8 wk
24 May
14 Jun
1 wk after
30 Jun
6 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
7 Apr
8-10 wk
18 May
2 Jun
0 wk
12 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
29 Mar – 26 Apr
5 May
6-10 wk
7 Jun
16 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
18 May
4 Jul
0 wk
19 May
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
29 Mar – 12 Apr
14 Apr
8-10 wk
7 Jun
9 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
1 May
6-8 wk
18 May
12 Jun
0 wk
31 May
2 Jun
2 wk after