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Method
Rel. frost
Last spring frost (0°C) 22 May Frost 3 of 4 years · 20 years of data
Frost-free season 88 days 22 May – 18 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)
3 – 17 Apr
10 Jun
5-7 wk
22 May
15 Jul
0 wk
23 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
22 Jun
4-6 wk
22 May
20 Jul
0 wk
23 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
10 Mar – 7 Apr
8-12 wk
2 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
5 Jun
5-7 wk
22 May
10 Jul
0 wk
22 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
5 – 12 May
13 May
3-4 wk
2 Jun
3 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
7 – 14 May
14 May
4-5 wk
11 Jun
11 Jun
3 wk after
16 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Jun
3-4 wk
2 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
27 Feb – 27 Mar
19 Mar
8-12 wk
22 May
0 wk
22 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
0 wk
23 May
0 wk
Maize
Zea mays
Greenhouse
28 Apr – 5 May
3 May
3-4 wk
26 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
10 Jun
3-4 wk
28 May
1 Jul
1 wk after
4 Jun
21 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
24 Jun
0 wk
22 May
14 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
5 Jun
5-7 wk
22 May
10 Jul
0 wk
22 May
30 Jun
0 wk
Potato
Solanum tuberosum
20 Apr – 4 May
26 Apr
4-6 wk
1 Jun
1 wk after
1 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
9 Jun
5-7 wk
22 May
14 Jul
0 wk
23 May
4 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
14 – 21 May
18 May
3-4 wk
11 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
30 Apr – 7 May
3-4 wk
28 May
1 wk after
4 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
28 Jun
3-4 wk
22 May
19 Jul
0 wk
23 May
9 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
8 May
2-4 wk
22 May
22 May
0 wk
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
24 Apr – 1 May
19 Jul
3-4 wk
22 May
9 Aug
0 wk
19 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
31 Mar – 14 Apr
12 Apr
6-8 wk
26 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
5 – 19 May
20 May
2-4 wk
2 Jun
3 Jun
2 wk after
16 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
13 Jun
3-4 wk
22 May
4 Jul
0 wk
23 May
24 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
Greenhouse
21 Apr – 5 May
16 May
4-6 wk
2 Jun
13 Jun
2 wk after
Lemon balm
Melissa officinalis
13 – 27 Mar
9 May
8-10 wk
22 May
4 Jul
0 wk
16 Jun
24 Jun
4 wk after
Dill
Anethum graveolens
23 May
1 Jul
0 wk
Wild chives
Allium schoenoprasum
27 Mar – 10 Apr
29 May
6-8 wk
22 May
10 Jul
0 wk
23 May
30 Jun
0 wk
Spearmint
Mentha spicata
27 Feb – 27 Mar
15 May
8-12 wk
22 May
10 Jul
0 wk
16 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
22 May
21 Jul
0 wk
4 Jun
11 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
30 Apr
8-10 wk
28 May
25 Jun
1 wk after
Common thyme
Thymus vulgaris
13 – 27 Mar
5 May
8-10 wk
22 May
30 Jun
0 wk
Oregano
Origanum vulgare
27 Mar – 10 Apr
19 May
6-8 wk
22 May
30 Jun
0 wk
16 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
27 Mar – 10 Apr
19 May
6-8 wk
22 May
30 Jun
0 wk
23 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
19 Feb – 19 Mar
6 Mar
10-14 wk
28 May
1 wk after

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