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Method
Rel. frost
Last spring frost (0°C) 15 Jun Normal year · 20 years of data
Frost-free season 72 days 15 Jun – 26 Aug
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)
27 Apr – 11 May
15 Jun
5-7 wk
15 Jun
20 Jul
0 wk
19 Jun
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 May
27 Jun
4-6 wk
15 Jun
25 Jul
0 wk
19 Jun
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
29 Mar – 26 Apr
8-12 wk
21 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Apr – 11 May
10 Jun
5-7 wk
15 Jun
15 Jul
0 wk
15 Jun
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
24 – 31 May
27 May
3-4 wk
21 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
24 – 31 May
24 May
4-5 wk
28 Jun
2 wk after
20 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
26 Jun – 3 Jul
3-4 wk
24 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
23 Mar – 20 Apr
25 Mar
8-12 wk
15 Jun
0 wk
15 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Jun
1 wk after
19 Jun
1 wk after
Maize
Zea mays
Greenhouse
18 – 25 May
3-4 wk
15 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 May
20 Jun
3-4 wk
17 Jun
11 Jul
0 wk
6 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 Jun
2 Jul
0 wk
15 Jun
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Apr – 11 May
10 Jun
5-7 wk
15 Jun
15 Jul
0 wk
15 Jun
5 Jul
0 wk
Potato
Solanum tuberosum
Fleece
8 – 22 May
13 May
4-6 wk
19 Jun
1 wk after
19 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Apr – 11 May
17 Jun
5-7 wk
15 Jun
22 Jul
0 wk
19 Jun
12 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
31 May – 7 Jun
1 Jun
3-4 wk
28 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
18 – 25 May
3-4 wk
15 Jun
0 wk
25 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 May
22 Jun
4-6 wk
15 Jun
20 Jul
0 wk
Lettuce
Lactuca sativa
18 – 25 May
6 Jul
3-4 wk
15 Jun
27 Jul
0 wk
19 Jun
17 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 May
22 Jun
4-6 wk
15 Jun
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 May – 1 Jun
2-4 wk
15 Jun
0 wk
15 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 Jun
1 wk after
19 Jun
1 wk after
Spinach
Spinacia oleracea
18 – 25 May
24 Jul
3-4 wk
15 Jun
14 Aug
0 wk
11 Jun
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
17 – 31 Jul
4-6 wk
28 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
20 Apr – 4 May
26 Apr
6-8 wk
15 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
24 May – 7 Jun
3 Jun
2-4 wk
21 Jun
1 wk after
20 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 May
22 Jun
4-6 wk
15 Jun
20 Jul
0 wk
Garden pea
Pisum sativum
18 – 25 May
21 Jun
3-4 wk
15 Jun
12 Jul
0 wk
19 Jun
2 Jul
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
Greenhouse
10 – 24 May
25 May
4-6 wk
21 Jun
22 Jun
1 wk after
Lemon balm
Melissa officinalis
6 – 20 Apr
17 May
8-10 wk
15 Jun
12 Jul
0 wk
20 Jul
5 wk after
Dill
Anethum graveolens
19 Jun
11 Jul
1 wk after
Wild chives
Allium schoenoprasum
20 Apr – 4 May
3 Jun
6-8 wk
15 Jun
15 Jul
0 wk
19 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
23 Mar – 20 Apr
20 May
8-12 wk
15 Jun
15 Jul
0 wk
20 Jul
5 wk after
Coriander
Coriandrum sativum
15 Jun
31 Jul
0 wk
6 Jul
21 Jul
3 wk after
Garden sage
Salvia officinalis
8 – 22 Apr
5 May
8-10 wk
17 Jun
30 Jun
0 wk
Common thyme
Thymus vulgaris
6 – 20 Apr
10 May
8-10 wk
15 Jun
5 Jul
0 wk
Oregano
Origanum vulgare
20 Apr – 4 May
24 May
6-8 wk
15 Jun
5 Jul
0 wk
20 Jul
5 wk after
Parsley
Petroselinum crispum
20 Apr – 4 May
24 May
6-8 wk
15 Jun
5 Jul
0 wk
19 Jun
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
9 Mar – 6 Apr
27 Mar
10-14 wk
15 Jun
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
Greenhouse
24 – 31 May
1 Jun
3-4 wk
21 Jun
22 Jun
1 wk after
Cornflower
Centaurea cyanus
15 Jun
15 Jul
0 wk
19 Jun
5 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
12 – 26 Apr
23 Apr
8-10 wk
21 Jun
1 wk after
Sweet William
Dianthus barbatus
20 Apr – 4 May
6-8 wk
15 Jun
0 wk
1 Jul
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
26 Apr – 10 May
7 May
6-8 wk
21 Jun
1 wk after
13 Aug
8 wk after
Pinnate dahlia
Dahlia × pinnata
1 – 15 May
1 May
6-8 wk
26 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
11 May – 8 Jun
27 May
4-8 wk
6 Jul
3 wk after
6 Jul
3 wk after
Foxglove
Digitalis purpurea
6 – 20 Apr
8-10 wk
15 Jun
0 wk
6 Jul
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
5 Apr – 3 May
12 Jun
8-12 wk
28 Jun
7 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 May
6 May
6-8 wk
28 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
17 – 31 May
4-6 wk
28 Jun
2 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Apr
8-10 wk
17 Jun
0 wk
Love in a mist
Nigella damascena
15 Jun
27 Jun
0 wk
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
26 Apr – 10 May
27 Apr
6-8 wk
21 Jun
1 wk after
13 Aug
8 wk after
Purple-top vervain
Verbena bonariensis
25 Mar – 22 Apr
6 Apr
8-12 wk
17 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
23 Mar – 20 Apr
8-12 wk
15 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
29 Mar – 26 Apr
17 Apr
8-12 wk
21 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
26 Apr – 10 May
1 May
6-8 wk
21 Jun
1 wk after
Corn poppy
Papaver rhoeas
15 Jun
12 Jul
0 wk
19 Jun
2 Jul
1 wk after
Snapdragon
Antirrhinum majus
23 Mar – 20 Apr
7 May
8-12 wk
15 Jun
2 Jul
0 wk
1 Jul
2 wk after
Flossflower
Ageratum houstonianum
Fleece
19 Apr – 3 May
3 May
8-10 wk
28 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
20 Apr – 11 May
31 May
5-8 wk
15 Jun
5 Jul
0 wk
Stock
Matthiola incana
20 Apr – 4 May
31 May
6-8 wk
15 Jun
12 Jul
0 wk
6 Jul
3 wk after
Wormwood
Artemisia absinthium
20 Apr – 4 May
4 May
6-8 wk
15 Jun
15 Jun
0 wk
6 Jul
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
10 – 24 May
10 May
4-6 wk
21 Jun
1 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Apr
20 May
8-10 wk
15 Jun
15 Jul
0 wk
1 Jul
5 Jul
2 wk after
Petunia
Petunia
Fleece
29 Mar – 26 Apr
23 Apr
8-12 wk
21 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Apr – 6 May
6-8 wk
17 Jun
0 wk
3 Aug
7 wk after
Common zinnia
Zinnia elegans
Fleece
10 – 24 May
25 May
4-6 wk
21 Jun
22 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
17 – 31 May
1 Jun
3-5 wk
21 Jun
22 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
17 – 31 May
4-6 wk
28 Jun
2 wk after
3 Aug
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
5 Apr – 3 May
17 May
8-12 wk
28 Jun
12 Jul
2 wk after
Bee balm
Monarda didyma
23 Mar – 20 Apr
17 Apr
8-12 wk
15 Jun
0 wk
20 Jul
5 wk after
Yarrow
Achillea millefolium
20 Apr – 4 May
6-8 wk
15 Jun
0 wk
6 Jul
3 wk after
Safflower
Carthamus tinctorius
15 Jun
15 Jun
0 wk
19 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
20 Apr – 4 May
24 May
6-8 wk
15 Jun
5 Jul
0 wk
28 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
4 – 18 May
4 Jun
4-6 wk
15 Jun
2 Jul
0 wk
6 Jul
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
29 Mar – 12 Apr
10-12 wk
21 Jun
1 wk after
Sunflower
Helianthus annuus
31 May – 7 Jun
3-4 wk
28 Jun
2 wk after
20 Jul
5 wk after
China aster
Callistephus chinensis
3 – 17 May
13 May
6-8 wk
28 Jun
2 wk after
3 Aug
7 wk after
Annual phlox
Phlox drummondii
26 Apr – 10 May
6 May
6-8 wk
21 Jun
1 wk after
3 Aug
7 wk after
Hollyhock
Alcea rosea
20 Apr – 4 May
6-8 wk
15 Jun
0 wk
6 Jul
3 wk after
Alpine delphinium
Delphinium elatum
23 Mar – 20 Apr
17 Apr
8-12 wk
15 Jun
0 wk
20 Jul
5 wk after
African marigold
Tagetes erecta
3 – 17 May
6 May
6-8 wk
28 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
22 Apr – 6 May
3 May
6-8 wk
17 Jun
0 wk
3 Aug
7 wk after
Wood sage
Salvia nemorosa
6 – 20 Apr
7 Apr
8-10 wk
15 Jun
0 wk
20 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
12 Apr – 10 May
11 May
6-10 wk
21 Jun
22 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
15 Jun
5 Jul
0 wk
19 Jun
25 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
12 – 26 Apr
26 Apr
8-10 wk
21 Jun
21 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
20 Apr – 4 May
4 May
6-8 wk
15 Jun
15 Jun
0 wk
6 Jul
3 wk after