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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 89 days 23 May – 20 Aug
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
12 Jun
5-7 wk
23 May
17 Jul
0 wk
24 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
24 Jun
4-6 wk
23 May
22 Jul
0 wk
24 May
12 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
7 Jun
5-7 wk
23 May
12 Jul
0 wk
23 May
2 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
28 May
4-5 wk
29 May
25 Jun
1 wk after
5 Jun
15 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)
Greenhouse
28 Feb – 28 Mar
18 Mar
8-12 wk
23 May
0 wk
23 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
0 wk
24 May
0 wk
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
15 Jun
3-4 wk
25 May
6 Jul
0 wk
5 Jun
26 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
25 Jun
0 wk
23 May
15 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
7 Jun
5-7 wk
23 May
12 Jul
0 wk
23 May
2 Jul
0 wk
Potato
Solanum tuberosum
21 Apr – 5 May
21 Apr
4-6 wk
2 Jun
1 wk after
2 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
10 Jun
5-7 wk
23 May
15 Jul
0 wk
24 May
5 Jul
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
14 May
3-4 wk
23 May
4 Jun
0 wk
29 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
19 Jun
4-6 wk
23 May
17 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
29 Jun
3-4 wk
23 May
20 Jul
0 wk
24 May
10 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
19 Jun
4-6 wk
23 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Apr – 9 May
7 May
2-4 wk
23 May
0 wk
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
0 wk
24 May
0 wk
Spinach
Spinacia oleracea
25 Apr – 2 May
21 Jul
3-4 wk
23 May
11 Aug
0 wk
20 May
1 Aug
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
19 Jun
4-6 wk
23 May
17 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
14 Jun
3-4 wk
23 May
5 Jul
0 wk
24 May
25 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
10 May
8-10 wk
23 May
5 Jul
0 wk
17 Jun
25 Jun
4 wk after
Dill
Anethum graveolens
24 May
6 Jul
0 wk
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
31 May
6-8 wk
23 May
12 Jul
0 wk
24 May
2 Jul
0 wk
Spearmint
Mentha spicata
28 Feb – 28 Mar
17 May
8-12 wk
23 May
12 Jul
0 wk
17 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
23 May
26 Jul
0 wk
5 Jun
16 Jul
2 wk after
Garden sage
Salvia officinalis
16 – 30 Mar
2 May
8-10 wk
25 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
14 – 28 Mar
7 May
8-10 wk
23 May
2 Jul
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
21 May
6-8 wk
23 May
2 Jul
0 wk
17 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
21 May
6-8 wk
23 May
2 Jul
0 wk
24 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
14 Feb – 14 Mar
20 Mar
10-14 wk
23 May
29 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
12 Jul
0 wk
24 May
2 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
2 Apr
6-8 wk
23 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
3 Apr – 1 May
16 Apr
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
29 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
16 – 30 Mar
1 Apr
8-10 wk
25 May
27 May
0 wk
Love in a mist
Nigella damascena
23 May
20 Jun
0 wk
24 May
10 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
2 – 30 Mar
1 Apr
8-12 wk
25 May
27 May
0 wk
Cardoon
Cynara cardunculus
Season too short
28 Feb – 28 Mar
18 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
5 Jul
0 wk
24 May
25 Jun
0 wk
Snapdragon
Antirrhinum majus
28 Feb – 28 Mar
30 Apr
8-12 wk
23 May
25 Jun
0 wk
2 Jun
15 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
28 May
5-8 wk
23 May
2 Jul
0 wk
Stock
Matthiola incana
28 Mar – 11 Apr
24 May
6-8 wk
23 May
5 Jul
0 wk
5 Jun
25 Jun
2 wk after
Wormwood
Artemisia absinthium
28 Mar – 11 Apr
1 May
6-8 wk
23 May
12 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
17 May
8-10 wk
23 May
12 Jul
0 wk
2 Jun
2 Jul
1 wk after
Petunia
Petunia
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
30 Mar – 13 Apr
15 Apr
6-8 wk
25 May
27 May
0 wk
5 Jul
6 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
16 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
10 Apr
8-12 wk
23 May
5 Jun
0 wk
17 Jun
4 wk after
Yarrow
Achillea millefolium
28 Mar – 11 Apr
1 Apr
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Safflower
Carthamus tinctorius
23 May
12 Jun
0 wk
24 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
28 Mar – 11 Apr
21 May
6-8 wk
23 May
2 Jul
0 wk
7 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
28 May
4-6 wk
23 May
25 Jun
0 wk
5 Jun
15 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
28 May
3-4 wk
29 May
18 Jun
1 wk after
5 Jun
8 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
3 – 17 Apr
17 May
6-8 wk
29 May
28 Jun
1 wk after
17 Jun
18 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
10 Apr
8-12 wk
23 May
5 Jun
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
30 Mar – 13 Apr
22 Apr
6-8 wk
25 May
3 Jun
0 wk
5 Jul
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Mar
31 Mar
8-10 wk
23 May
26 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
28 Jun
0 wk
24 May
18 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
20 Mar – 3 Apr
21 Apr
8-10 wk
29 May
16 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
28 Mar – 11 Apr
1 May
6-8 wk
23 May
12 Jun
0 wk
5 Jun
2 wk after