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Method
Rel. frost
Last spring frost (0°C) 16 May Frost 3 of 4 years · 20 years of data
Frost-free season 115 days 16 May – 8 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)
28 Mar – 11 Apr
16 Jun
5-7 wk
16 May
21 Jul
0 wk
20 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 Apr
28 Jun
4-6 wk
16 May
26 Jul
0 wk
20 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
28 Mar – 11 Apr
11 Jun
5-7 wk
16 May
16 Jul
0 wk
16 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
24 Apr – 1 May
29 May
3-4 wk
22 May
19 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 May
19 May
4-5 wk
17 Jun
5 wk after
4 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
21 Feb – 21 Mar
15 Mar
8-12 wk
16 May
0 wk
6 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 May
30 May
1 wk after
20 May
20 May
1 wk after
Maize
Zea mays
Greenhouse
18 – 25 Apr
19 May
3-4 wk
16 May
9 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
28 Jun
3-4 wk
18 May
19 Jul
0 wk
6 Jun
9 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 May
6 Jul
0 wk
16 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
28 Mar – 11 Apr
11 Jun
5-7 wk
16 May
16 Jul
0 wk
16 May
6 Jul
0 wk
Potato
Solanum tuberosum
20 Apr – 4 May
16 May
4-6 wk
1 Jun
13 Jun
2 wk after
1 Jun
3 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Mar – 11 Apr
21 Jun
5-7 wk
16 May
26 Jul
0 wk
20 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
1 – 8 May
3 Jun
3-4 wk
29 May
24 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
19 May
3-4 wk
18 May
9 Jun
0 wk
6 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 Apr
23 Jun
4-6 wk
16 May
21 Jul
0 wk
Lettuce
Lactuca sativa
18 – 25 Apr
10 Jul
3-4 wk
16 May
31 Jul
0 wk
20 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 Apr
23 Jun
4-6 wk
16 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Apr – 2 May
19 May
2-4 wk
16 May
2 Jun
0 wk
16 May
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 May
30 May
1 wk after
20 May
20 May
1 wk after
Spinach
Spinacia oleracea
18 – 25 Apr
25 Jul
3-4 wk
16 May
15 Aug
0 wk
12 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
21 Mar – 4 Apr
28 Apr
6-8 wk
16 May
9 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
24 Apr – 8 May
5 Jun
2-4 wk
22 May
19 Jun
1 wk after
20 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 Apr
23 Jun
4-6 wk
16 May
21 Jul
0 wk
Garden pea
Pisum sativum
18 – 25 Apr
25 Jun
3-4 wk
16 May
16 Jul
0 wk
20 May
6 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
Fleece
17 Apr – 1 May
12 May
4-6 wk
29 May
9 Jun
2 wk after
Lemon balm
Melissa officinalis
7 – 21 Mar
21 May
8-10 wk
16 May
16 Jul
0 wk
20 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
20 May
19 Jul
1 wk after
Wild chives
Allium schoenoprasum
21 Mar – 4 Apr
4 Jun
6-8 wk
16 May
16 Jul
0 wk
20 May
6 Jul
1 wk after
Spearmint
Mentha spicata
21 Feb – 21 Mar
21 May
8-12 wk
16 May
16 Jul
0 wk
20 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
16 May
8 Aug
0 wk
6 Jun
29 Jul
3 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
6 May
8-10 wk
18 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
7 – 21 Mar
11 May
8-10 wk
16 May
6 Jul
0 wk
Oregano
Origanum vulgare
21 Mar – 4 Apr
25 May
6-8 wk
16 May
6 Jul
0 wk
20 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
21 Mar – 4 Apr
25 May
6-8 wk
16 May
6 Jul
0 wk
20 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
25 Mar
10-14 wk
18 May
3 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
1 – 8 May
19 May
3-4 wk
29 May
9 Jun
2 wk after
Cornflower
Centaurea cyanus
16 May
16 Jul
0 wk
20 May
6 Jul
1 wk after
Statice
Limonium sinuatum
20 Mar – 3 Apr
15 Apr
8-10 wk
29 May
10 Jun
2 wk after
Sweet William
Dianthus barbatus
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
1 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
3 – 17 Apr
29 Apr
6-8 wk
29 May
10 Jun
2 wk after
29 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
1 – 15 Apr
4 May
6-8 wk
27 May
15 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
25 Apr – 23 May
18 May
4-8 wk
20 Jun
5 wk after
20 Jun
5 wk after
Foxglove
Digitalis purpurea
7 – 21 Mar
8-10 wk
16 May
0 wk
6 Jun
3 wk after
Busy lizzie
Impatiens walleriana
25 Mar – 22 Apr
30 May
8-12 wk
17 Jun
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
17 Apr – 1 May
4-6 wk
29 May
2 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
14 Apr
8-10 wk
18 May
9 Jun
0 wk
Love in a mist
Nigella damascena
16 May
1 Jul
0 wk
20 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
27 Mar – 10 Apr
27 Apr
6-8 wk
22 May
8 Jun
1 wk after
14 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
14 Apr
8-12 wk
18 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
27 Feb – 27 Mar
22 Mar
8-12 wk
22 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
27 Feb – 27 Mar
20 Apr
8-12 wk
22 May
15 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
27 Mar – 10 Apr
4 May
6-8 wk
22 May
15 Jun
1 wk after
Corn poppy
Papaver rhoeas
16 May
16 Jul
0 wk
20 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
21 Feb – 21 Mar
11 May
8-12 wk
16 May
6 Jul
0 wk
1 Jun
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
8 – 22 Apr
25 Apr
8-10 wk
17 Jun
20 Jun
5 wk after
Sweet pea
Lathyrus odoratus
21 Mar – 11 Apr
1 Jun
5-8 wk
16 May
6 Jul
0 wk
Stock
Matthiola incana
21 Mar – 4 Apr
4 Jun
6-8 wk
16 May
16 Jul
0 wk
6 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
21 Mar – 4 Apr
5 May
6-8 wk
16 May
16 Jun
0 wk
6 Jun
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
10 – 24 Apr
13 May
4-6 wk
22 May
10 Jun
1 wk after
Garden pansy
Viola × wittrockiana
7 – 21 Mar
21 May
8-10 wk
16 May
16 Jul
0 wk
1 Jun
6 Jul
2 wk after
Petunia
Petunia
6 Mar – 3 Apr
15 Apr
8-12 wk
29 May
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
28 Apr
6-8 wk
18 May
9 Jun
0 wk
4 Jul
7 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
12 May
4-6 wk
29 May
9 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
24 Apr – 8 May
19 May
3-5 wk
29 May
9 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
18 May
4-6 wk
29 May
15 Jun
2 wk after
4 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
25 Mar – 22 Apr
4 May
8-12 wk
17 Jun
29 Jun
5 wk after
Bee balm
Monarda didyma
21 Feb – 21 Mar
21 Apr
8-12 wk
16 May
16 Jun
0 wk
20 Jun
5 wk after
Yarrow
Achillea millefolium
21 Mar – 4 Apr
5 Apr
6-8 wk
16 May
17 May
0 wk
6 Jun
3 wk after
Safflower
Carthamus tinctorius
16 May
16 Jun
0 wk
20 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
21 Mar – 4 Apr
25 May
6-8 wk
16 May
6 Jul
0 wk
28 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
4 – 18 Apr
8 Jun
4-6 wk
16 May
6 Jul
0 wk
6 Jun
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
27 Feb – 13 Mar
22 Mar
10-12 wk
22 May
31 May
1 wk after
Sunflower
Helianthus annuus
1 – 8 May
2 Jun
3-4 wk
29 May
23 Jun
2 wk after
20 Jun
5 wk after
China aster
Callistephus chinensis
3 – 17 Apr
22 May
6-8 wk
29 May
3 Jul
2 wk after
4 Jul
7 wk after
Annual phlox
Phlox drummondii
27 Mar – 10 Apr
9 May
6-8 wk
22 May
20 Jun
1 wk after
4 Jul
7 wk after
Hollyhock
Alcea rosea
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
6 Jun
3 wk after
Alpine delphinium
Delphinium elatum
21 Feb – 21 Mar
21 Apr
8-12 wk
16 May
16 Jun
0 wk
20 Jun
5 wk after
African marigold
Tagetes erecta
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
12 May
6-8 wk
18 May
23 Jun
0 wk
4 Jul
7 wk after
Wood sage
Salvia nemorosa
7 – 21 Mar
11 Apr
8-10 wk
16 May
6 Jun
0 wk
20 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
20 Mar – 17 Apr
28 Apr
6-10 wk
29 May
9 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
16 May
16 Jul
0 wk
20 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
21 Apr
8-10 wk
29 May
16 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
21 Mar – 4 Apr
5 May
6-8 wk
16 May
16 Jun
0 wk
6 Jun
6 Jun
3 wk after