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Method
Rel. frost
Last spring frost (0°C) 27 May Frost 3 of 4 years · 20 years of data
Frost-free season 96 days 27 May – 31 Aug
Probability that frost is over

25% = 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
Season too short
10 Mar – 7 Apr
21 Mar
8-12 wk
2 Jun
1 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
12 – 19 May
15 May
3-4 wk
9 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
27 May
4-5 wk
9 Jun
24 Jun
2 wk after
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
4 Mar – 1 Apr
20 Mar
8-12 wk
27 May
0 wk
2 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
0 wk
28 May
0 wk
Maize
Zea mays
Fleece
5 – 12 May
5 May
3-4 wk
2 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
23 Jun
3-4 wk
29 May
14 Jul
0 wk
9 Jun
4 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
30 Jun
0 wk
27 May
20 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
10 May
4-6 wk
6 Jun
7 Jun
1 wk after
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
15 Jun
5-7 wk
27 May
20 Jul
0 wk
28 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
3 Jun
3-4 wk
9 Jun
24 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
16 May
3-4 wk
29 May
6 Jun
0 wk
9 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
4 Jul
3-4 wk
27 May
25 Jul
0 wk
28 May
15 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
16 May
2-4 wk
27 May
30 May
0 wk
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
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
7 – 21 Apr
14 Apr
6-8 wk
2 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
12 – 26 May
22 May
2-4 wk
9 Jun
2 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
19 Jun
3-4 wk
27 May
10 Jul
0 wk
28 May
30 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
Fleece
28 Apr – 12 May
12 May
4-6 wk
9 Jun
9 Jun
2 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
15 May
8-10 wk
27 May
10 Jul
0 wk
21 Jun
30 Jun
4 wk after
Dill
Anethum graveolens
28 May
14 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
3 Aug
0 wk
9 Jun
24 Jul
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
3 May
8-10 wk
29 May
28 Jun
0 wk
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
20 Feb – 20 Mar
22 Mar
10-14 wk
29 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
Fleece
12 – 19 May
19 May
3-4 wk
9 Jun
9 Jun
2 wk after
Cornflower
Centaurea cyanus
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Statice
Limonium sinuatum
31 Mar – 14 Apr
16 Apr
8-10 wk
9 Jun
11 Jun
2 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
14 – 28 Apr
30 Apr
6-8 wk
9 Jun
11 Jun
2 wk after
2 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
1 May
6-8 wk
7 Jun
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Apr – 24 May
15 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
5 Apr – 3 May
30 May
8-12 wk
28 Jun
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
10 May
6-8 wk
9 Jun
21 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
9 Apr
8-10 wk
29 May
4 Jun
0 wk
Love in a mist
Nigella damascena
27 May
25 Jun
0 wk
28 May
15 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
7 – 21 Apr
28 Apr
6-8 wk
2 Jun
9 Jun
1 wk after
16 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
9 Apr
8-12 wk
29 May
4 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
4 Mar – 1 Apr
19 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
10 Mar – 7 Apr
17 Apr
8-12 wk
2 Jun
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
7 – 21 Apr
1 May
6-8 wk
2 Jun
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
27 May
10 Jul
0 wk
28 May
30 Jun
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
5 May
8-12 wk
27 May
30 Jun
0 wk
6 Jun
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
4 May
8-10 wk
9 Jun
29 Jun
2 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
29 May
6-8 wk
27 May
10 Jul
0 wk
9 Jun
30 Jun
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
Greenhouse
21 Apr – 5 May
10 May
4-6 wk
2 Jun
7 Jun
1 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
17 Mar – 14 Apr
16 Apr
8-12 wk
9 Jun
11 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
23 Apr
6-8 wk
29 May
4 Jun
0 wk
9 Jul
6 wk after
Common zinnia
Zinnia elegans
28 Apr – 12 May
12 May
4-6 wk
9 Jun
9 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
19 May
3-5 wk
9 Jun
9 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
28 Apr – 12 May
15 May
4-6 wk
9 Jun
12 Jun
2 wk after
9 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
17 Mar – 14 Apr
17 May
8-12 wk
9 Jun
12 Jul
2 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
15 Apr
8-12 wk
27 May
10 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
2 Jun
4-6 wk
27 May
30 Jun
0 wk
9 Jun
20 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
10 – 24 Mar
24 Mar
10-12 wk
2 Jun
2 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
30 May
3-4 wk
9 Jun
20 Jun
2 wk after
21 Jun
4 wk after
China aster
Callistephus chinensis
14 – 28 Apr
19 May
6-8 wk
9 Jun
30 Jun
2 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
10 May
6-8 wk
2 Jun
21 Jun
1 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
15 Apr
8-12 wk
27 May
10 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
14 – 28 Apr
10 May
6-8 wk
9 Jun
21 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
0 wk
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
5 Apr
8-10 wk
27 May
31 May
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
31 Mar – 28 Apr
28 Apr
6-10 wk
9 Jun
9 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
27 May
7 Jul
0 wk
28 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
8 Apr
8-10 wk
9 Jun
2 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