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Method
Rel. frost
Last spring frost (0°C) 15 May Frost 3 of 4 years · 20 years of data
Frost-free season 110 days 15 May – 2 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)
27 Mar – 10 Apr
12 Jun
5-7 wk
15 May
17 Jul
0 wk
16 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
24 Jun
4-6 wk
15 May
22 Jul
0 wk
16 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
26 Feb – 26 Mar
29 Mar
8-12 wk
21 May
24 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
7 Jun
5-7 wk
15 May
12 Jul
0 wk
15 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
30 Apr – 7 May
23 May
3-4 wk
28 May
13 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
23 – 30 Apr
25 May
4-5 wk
28 May
22 Jun
2 wk after
9 Jun
12 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Feb – 20 Mar
18 Mar
8-12 wk
15 May
0 wk
28 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
2 Jun
0 wk
16 May
23 May
0 wk
Maize
Zea mays
Fleece
23 – 30 Apr
13 May
3-4 wk
21 May
3 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
21 Jun
3-4 wk
17 May
12 Jul
0 wk
28 May
2 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
2 Jul
0 wk
15 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
7 Jun
5-7 wk
15 May
12 Jul
0 wk
15 May
2 Jul
0 wk
Potato
Solanum tuberosum
13 – 27 Apr
18 May
4-6 wk
25 May
15 Jun
1 wk after
25 May
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
17 Jun
5-7 wk
15 May
22 Jul
0 wk
16 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
19 – 26 May
28 May
3-4 wk
16 Jun
18 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
25 May
3-4 wk
17 May
15 Jun
0 wk
28 May
5 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
19 Jun
4-6 wk
15 May
17 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
6 Jul
3-4 wk
15 May
27 Jul
0 wk
16 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
19 Jun
4-6 wk
15 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
25 May
2-4 wk
15 May
8 Jun
0 wk
15 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
2 Jun
0 wk
16 May
23 May
0 wk
Spinach
Spinacia oleracea
17 – 24 Apr
21 Jul
3-4 wk
15 May
11 Aug
0 wk
12 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
26 Mar – 9 Apr
22 Apr
6-8 wk
21 May
3 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 Apr – 14 May
30 May
2-4 wk
28 May
13 Jun
2 wk after
27 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
19 Jun
4-6 wk
15 May
17 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
21 Jun
3-4 wk
15 May
12 Jul
0 wk
16 May
2 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
16 – 30 Apr
19 May
4-6 wk
28 May
16 Jun
2 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
17 May
8-10 wk
15 May
12 Jul
0 wk
9 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
16 May
12 Jul
0 wk
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
31 May
6-8 wk
15 May
12 Jul
0 wk
16 May
2 Jul
0 wk
Spearmint
Mentha spicata
20 Feb – 20 Mar
17 May
8-12 wk
15 May
12 Jul
0 wk
9 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
15 May
1 Aug
0 wk
28 May
22 Jul
2 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
2 May
8-10 wk
17 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
7 May
8-10 wk
15 May
2 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
21 May
6-8 wk
15 May
2 Jul
0 wk
9 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
21 May
6-8 wk
15 May
2 Jul
0 wk
16 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
18 Mar
10-14 wk
17 May
27 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
30 Apr – 7 May
26 May
3-4 wk
28 May
16 Jun
2 wk after
Cornflower
Centaurea cyanus
15 May
12 Jul
0 wk
16 May
2 Jul
0 wk
Statice
Limonium sinuatum
19 Mar – 2 Apr
18 Apr
8-10 wk
28 May
13 Jun
2 wk after
Sweet William
Dianthus barbatus
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
25 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
2 wk after
21 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
8 May
6-8 wk
26 May
19 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
14 Apr – 12 May
22 May
4-8 wk
9 Jun
19 Jun
4 wk after
9 Jun
9 Jun
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Mar
8-10 wk
15 May
0 wk
28 May
2 wk after
Busy lizzie
Impatiens walleriana
24 Mar – 21 Apr
6 Jun
8-12 wk
16 Jun
1 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
2 – 16 Apr
12 May
6-8 wk
28 May
23 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
19 Apr
4-6 wk
28 May
2 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
7 Apr
8-10 wk
17 May
2 Jun
0 wk
Love in a mist
Nigella damascena
15 May
27 Jun
0 wk
16 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
2 – 16 Apr
22 Apr
6-8 wk
28 May
3 Jun
2 wk after
21 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
7 Apr
8-12 wk
17 May
2 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
20 Feb – 20 Mar
18 Mar
8-12 wk
15 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
5 Mar – 2 Apr
11 Apr
8-12 wk
28 May
6 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
2 – 16 Apr
25 Apr
6-8 wk
28 May
6 Jun
2 wk after
Corn poppy
Papaver rhoeas
15 May
12 Jul
0 wk
16 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
7 May
8-12 wk
15 May
2 Jul
0 wk
25 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
7 – 21 Apr
28 Apr
8-10 wk
16 Jun
23 Jun
5 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
28 May
5-8 wk
15 May
2 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
31 May
6-8 wk
15 May
12 Jul
0 wk
28 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
1 May
6-8 wk
15 May
12 Jun
0 wk
28 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
16 – 30 Apr
4 May
4-6 wk
28 May
1 Jun
2 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Mar
17 May
8-10 wk
15 May
12 Jul
0 wk
25 May
2 Jul
1 wk after
Petunia
Petunia
5 Mar – 2 Apr
18 Apr
8-12 wk
28 May
13 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
21 Apr
6-8 wk
17 May
2 Jun
0 wk
27 Jun
6 wk after
Common zinnia
Zinnia elegans
16 – 30 Apr
19 May
4-6 wk
28 May
16 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
23 Apr – 7 May
26 May
3-5 wk
28 May
16 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
16 – 30 Apr
22 May
4-6 wk
28 May
19 Jun
2 wk after
27 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
24 Mar – 21 Apr
11 May
8-12 wk
16 Jun
6 Jul
5 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
17 Apr
8-12 wk
15 May
12 Jun
0 wk
9 Jun
4 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
1 Apr
6-8 wk
15 May
0 wk
28 May
2 wk after
Safflower
Carthamus tinctorius
15 May
12 Jun
0 wk
16 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
21 May
6-8 wk
15 May
2 Jul
0 wk
29 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
4 Jun
4-6 wk
15 May
2 Jul
0 wk
28 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
26 Feb – 12 Mar
30 Mar
10-12 wk
21 May
8 Jun
1 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
26 May
3-4 wk
28 May
16 Jun
2 wk after
9 Jun
4 wk after
China aster
Callistephus chinensis
2 – 16 Apr
15 May
6-8 wk
28 May
26 Jun
2 wk after
27 Jun
6 wk after
Annual phlox
Phlox drummondii
26 Mar – 9 Apr
12 May
6-8 wk
21 May
23 Jun
1 wk after
27 Jun
6 wk after
Hollyhock
Alcea rosea
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
28 May
2 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
17 Apr
8-12 wk
15 May
12 Jun
0 wk
9 Jun
4 wk after
African marigold
Tagetes erecta
2 – 16 Apr
12 May
6-8 wk
28 May
23 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
5 May
6-8 wk
17 May
16 Jun
0 wk
27 Jun
6 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
7 Apr
8-10 wk
15 May
2 Jun
0 wk
9 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
19 Mar – 16 Apr
5 May
6-10 wk
28 May
16 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
15 May
9 Jul
0 wk
16 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
19 Mar – 2 Apr
14 Apr
8-10 wk
28 May
9 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
1 May
6-8 wk
15 May
12 Jun
0 wk
28 May
2 Jun
2 wk after