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Method
Rel. frost
Last spring frost (0°C) 27 May Normal year · 20 years of data
Frost-free season 110 days 27 May – 14 Sep
Probability that frost is over

50% = 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)
8 – 22 Apr
13 Jun
5-7 wk
27 May
18 Jul
0 wk
28 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
25 Jun
4-6 wk
27 May
23 Jul
0 wk
28 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
15 Mar – 12 Apr
31 Mar
8-12 wk
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
8 Jun
5-7 wk
27 May
13 Jul
0 wk
27 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
19 – 26 May
25 May
3-4 wk
16 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
26 May – 2 Jun
4-5 wk
30 Jun
5 wk after
9 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Mar – 1 Apr
20 Mar
8-12 wk
27 May
0 wk
9 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
4 Jun
0 wk
28 May
0 wk
Maize
Zea mays
Fleece
10 – 17 May
15 May
3-4 wk
7 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
28 Jun
3-4 wk
2 Jun
19 Jul
1 wk after
9 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
3 Jul
0 wk
27 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
8 Jun
5-7 wk
27 May
13 Jul
0 wk
27 May
3 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
19 May
4-6 wk
6 Jun
16 Jun
1 wk after
6 Jun
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
18 Jun
5-7 wk
27 May
23 Jul
0 wk
28 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
2 – 9 Jun
3-4 wk
30 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
30 May
3-4 wk
2 Jun
20 Jun
1 wk after
9 Jun
10 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
7 Jul
3-4 wk
27 May
28 Jul
0 wk
28 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
26 May
2-4 wk
27 May
9 Jun
0 wk
27 May
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
4 Jun
0 wk
28 May
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
22 Jul
3-4 wk
27 May
12 Aug
0 wk
24 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
12 – 26 Apr
24 Apr
6-8 wk
7 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
19 May – 2 Jun
1 Jun
2-4 wk
16 Jun
3 wk after
9 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
22 Jun
3-4 wk
27 May
13 Jul
0 wk
28 May
3 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
5 – 19 May
24 May
4-6 wk
16 Jun
21 Jun
3 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
18 May
8-10 wk
27 May
13 Jul
0 wk
21 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
28 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
1 Jun
6-8 wk
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
18 May
8-12 wk
27 May
13 Jul
0 wk
21 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
27 May
8 Aug
0 wk
9 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
3 May
8-10 wk
2 Jun
28 Jun
1 wk after
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
8 May
8-10 wk
27 May
3 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
0 wk
21 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
0 wk
28 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
30 Mar
10-14 wk
2 Jun
8 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
19 – 26 May
31 May
3-4 wk
16 Jun
21 Jun
3 wk after
Cornflower
Centaurea cyanus
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Statice
Limonium sinuatum
7 – 21 Apr
21 Apr
8-10 wk
16 Jun
16 Jun
3 wk after
Sweet William
Dianthus barbatus
1 – 15 Apr
6-8 wk
27 May
0 wk
6 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Apr – 5 May
5 May
6-8 wk
16 Jun
16 Jun
3 wk after
2 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Apr
9 May
6-8 wk
11 Jun
20 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Apr – 24 May
23 May
4-8 wk
21 Jun
4 wk after
21 Jun
4 wk after
Foxglove
Digitalis purpurea
18 Mar – 1 Apr
8-10 wk
27 May
0 wk
9 Jun
2 wk after
Busy lizzie
Impatiens walleriana
7 Apr – 5 May
11 Jun
8-12 wk
30 Jun
6 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
15 May
6-8 wk
16 Jun
26 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 May
4-6 wk
16 Jun
3 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
14 Apr
8-10 wk
2 Jun
9 Jun
1 wk after
Love in a mist
Nigella damascena
27 May
28 Jun
0 wk
28 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
21 Apr – 5 May
25 Apr
6-8 wk
16 Jun
3 wk after
2 Aug
10 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
14 Apr
8-12 wk
2 Jun
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
15 Mar – 12 Apr
19 Mar
8-12 wk
7 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
24 Mar – 21 Apr
16 Apr
8-12 wk
16 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
21 Apr – 5 May
30 Apr
6-8 wk
16 Jun
3 wk after
Corn poppy
Papaver rhoeas
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
8 May
8-12 wk
27 May
3 Jul
0 wk
6 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
21 Apr – 5 May
1 May
8-10 wk
30 Jun
5 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
29 May
5-8 wk
27 May
3 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
1 Jun
6-8 wk
27 May
13 Jul
0 wk
9 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
2 May
6-8 wk
27 May
13 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
5 – 19 May
9 May
4-6 wk
16 Jun
3 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
18 May
8-10 wk
27 May
13 Jul
0 wk
6 Jun
3 Jul
1 wk after
Petunia
Petunia
24 Mar – 21 Apr
21 Apr
8-12 wk
16 Jun
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
28 Apr
6-8 wk
2 Jun
9 Jun
1 wk after
9 Jul
6 wk after
Common zinnia
Zinnia elegans
5 – 19 May
24 May
4-6 wk
16 Jun
21 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
12 – 26 May
31 May
3-5 wk
16 Jun
21 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 May
23 May
4-6 wk
16 Jun
20 Jun
3 wk after
9 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
7 Apr – 5 May
16 May
8-12 wk
30 Jun
11 Jul
5 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
18 Apr
8-12 wk
27 May
13 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
2 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
13 Jun
0 wk
28 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
0 wk
11 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
5 Jun
4-6 wk
27 May
3 Jul
0 wk
9 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
15 – 29 Mar
31 Mar
10-12 wk
7 Jun
9 Jun
2 wk after
Sunflower
Helianthus annuus
19 – 26 May
7 Jun
3-4 wk
16 Jun
28 Jun
3 wk after
21 Jun
4 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
27 May
6-8 wk
16 Jun
8 Jul
3 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
15 May
6-8 wk
7 Jun
26 Jun
2 wk after
9 Jul
6 wk after
Hollyhock
Alcea rosea
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Alpine delphinium
Delphinium elatum
4 Mar – 1 Apr
18 Apr
8-12 wk
27 May
13 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
15 May
6-8 wk
16 Jun
26 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
17 May
6-8 wk
2 Jun
28 Jun
1 wk after
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
8 Apr
8-10 wk
27 May
3 Jun
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
7 Apr – 5 May
10 May
6-10 wk
16 Jun
21 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
7 – 21 Apr
17 Apr
8-10 wk
16 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
2 May
6-8 wk
27 May
13 Jun
0 wk
9 Jun
2 wk after