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Rel. frost
Last spring frost (0°C) 23 May Frost 9 of 10 years · 20 years of data
Frost-free season 67 days 23 May – 29 Jul
Probability that frost is over

10% = 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)
4 – 18 Apr
11 Jun
5-7 wk
23 May
16 Jul
0 wk
24 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
23 Jun
4-6 wk
23 May
21 Jul
0 wk
24 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Apr
6 Jun
5-7 wk
23 May
11 Jul
0 wk
23 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
1 – 8 May
3-4 wk
29 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
24 Apr – 1 May
23 May
4-5 wk
29 May
20 Jun
1 wk after
5 Jun
10 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
28 Feb – 28 Mar
9 Mar
8-12 wk
23 May
0 wk
23 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Greenhouse
14 May
24 May
1 wk before
14 May
14 May
1 wk before
Maize
Zea mays
Season too short
25 Apr – 2 May
3-4 wk
23 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
12 Jun
3-4 wk
25 May
3 Jul
0 wk
5 Jun
23 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
20 Jun
0 wk
23 May
10 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
6 Jun
5-7 wk
23 May
11 Jul
0 wk
23 May
1 Jul
0 wk
Potato
Solanum tuberosum
Fleece
12 – 26 Apr
23 Apr
4-6 wk
24 May
0 wk
24 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
5 Jun
5-7 wk
23 May
10 Jul
0 wk
24 May
30 Jun
0 wk
Pumpkin
Cucurbita pepo
Season too short
1 – 8 May
3-4 wk
29 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
25 Apr – 2 May
4 May
3-4 wk
23 May
25 May
0 wk
29 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
18 Jun
4-6 wk
23 May
16 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
24 Jun
3-4 wk
23 May
15 Jul
0 wk
24 May
5 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
18 Jun
4-6 wk
23 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
19 Apr – 3 May
9 May
2-4 wk
17 May
23 May
1 wk before
17 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Greenhouse
14 May
24 May
1 wk before
14 May
14 May
1 wk before
Spinach
Spinacia oleracea
25 Apr – 2 May
19 Jul
3-4 wk
23 May
9 Aug
0 wk
20 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
25 Apr – 9 May
2-4 wk
23 May
0 wk
5 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
18 Jun
4-6 wk
23 May
16 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
9 Jun
3-4 wk
23 May
30 Jun
0 wk
24 May
20 Jun
0 wk

Herbs

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