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Method
Rel. frost
Last spring frost (0°C) 22 May Frost 9 of 10 years · 20 years of data
Frost-free season 81 days 22 May – 11 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)
3 – 17 Apr
14 Jun
5-7 wk
22 May
19 Jul
0 wk
26 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
26 Jun
4-6 wk
22 May
24 Jul
0 wk
26 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
11 Jun
5-7 wk
22 May
16 Jul
0 wk
22 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
30 Apr – 7 May
3-4 wk
28 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
15 May
4-5 wk
4 Jun
12 Jun
2 wk after
26 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jun
3-4 wk
30 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
27 Feb – 27 Mar
20 Mar
8-12 wk
22 May
0 wk
22 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
1 wk after
26 May
1 wk after
Maize
Zea mays
Season too short
24 Apr – 1 May
3-4 wk
22 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
11 Jun
3-4 wk
24 May
2 Jul
0 wk
12 Jun
22 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
24 Jun
0 wk
22 May
14 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
11 Jun
5-7 wk
22 May
16 Jul
0 wk
22 May
6 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
4-6 wk
7 Jun
2 wk after
7 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
9 Jun
5-7 wk
22 May
14 Jul
0 wk
26 May
4 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
30 Apr – 7 May
3-4 wk
28 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
24 Apr – 1 May
20 May
3-4 wk
22 May
10 Jun
0 wk
1 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
23 Jun
4-6 wk
22 May
21 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
28 Jun
3-4 wk
22 May
19 Jul
0 wk
26 May
9 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
23 Jun
4-6 wk
22 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
7 May
2-4 wk
22 May
0 wk
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
1 wk after
26 May
1 wk after
Spinach
Spinacia oleracea
24 Apr – 1 May
23 Jul
3-4 wk
22 May
13 Aug
0 wk
18 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
23 Jun – 7 Jul
4-6 wk
4 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
27 Mar – 10 Apr
6-8 wk
22 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
24 Apr – 8 May
2-4 wk
22 May
0 wk
12 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
23 Jun
4-6 wk
22 May
21 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
13 Jun
3-4 wk
22 May
4 Jul
0 wk
26 May
24 Jun
1 wk after

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