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Method
Rel. frost
Last spring frost (0°C) 18 May Frost 3 of 4 years · 20 years of data
Frost-free season 122 days 18 May – 17 Sep
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)
30 Mar – 13 Apr
16 Jun
5-7 wk
18 May
21 Jul
0 wk
11 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
28 Jun
4-6 wk
18 May
26 Jul
0 wk
11 May
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
1 – 29 Mar
28 Mar
8-12 wk
24 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
11 Jun
5-7 wk
18 May
16 Jul
0 wk
6 May
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
3 – 10 May
22 May
3-4 wk
31 May
12 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
25 May
4-5 wk
19 Jun
22 Jun
5 wk after
23 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Feb – 23 Mar
25 Mar
8-12 wk
18 May
20 May
0 wk
28 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
9 Jun
1 wk before
11 May
30 May
1 wk before
Maize
Zea mays
Fleece
26 Apr – 3 May
12 May
3-4 wk
24 May
2 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
1 Jul
3-4 wk
20 May
22 Jul
0 wk
28 May
12 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
6 Jul
0 wk
6 May
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
11 Jun
5-7 wk
18 May
16 Jul
0 wk
6 May
6 Jul
2 wk before
Potato
Solanum tuberosum
11 – 25 Apr
20 May
4-6 wk
23 May
17 Jun
1 wk after
23 May
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
21 Jun
5-7 wk
18 May
26 Jul
0 wk
11 May
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 May
27 May
3-4 wk
19 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
31 May
3-4 wk
20 May
21 Jun
0 wk
28 May
11 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
23 Jun
4-6 wk
18 May
21 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
10 Jul
3-4 wk
18 May
31 Jul
0 wk
11 May
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
23 Jun
4-6 wk
18 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
2 Jun
2-4 wk
6 May
16 Jun
2 wk before
6 May
6 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
9 Jun
1 wk before
11 May
30 May
1 wk before
Spinach
Spinacia oleracea
20 – 27 Apr
25 Jul
3-4 wk
18 May
15 Aug
0 wk
30 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
29 Mar – 12 Apr
21 Apr
6-8 wk
24 May
2 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
29 May
2-4 wk
31 May
12 Jun
2 wk after
23 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
23 Jun
4-6 wk
18 May
21 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
25 Jun
3-4 wk
18 May
16 Jul
0 wk
11 May
6 Jul
1 wk before

Herbs

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