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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 10 years · 20 years of data
Frost-free season 138 days 28 May – 13 Oct
Probability that frost is over

90% = 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)
9 – 23 Apr
15 Jun
5-7 wk
28 May
20 Jul
0 wk
1 Jun
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
27 Jun
4-6 wk
28 May
25 Jul
0 wk
1 Jun
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
10 Jun
5-7 wk
28 May
15 Jul
0 wk
28 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
30 May
3-4 wk
3 Jun
20 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
25 May – 1 Jun
7 Jun
4-5 wk
29 Jun
5 Jul
5 wk after
16 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
31 Mar
8-12 wk
28 May
0 wk
18 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Jun
15 Jun
1 wk after
1 Jun
5 Jun
1 wk after
Maize
Zea mays
Greenhouse
30 Apr – 7 May
20 May
3-4 wk
28 May
10 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
4 Jul
3-4 wk
30 May
25 Jul
0 wk
18 Jun
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
5 Jul
0 wk
28 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
10 Jun
5-7 wk
28 May
15 Jul
0 wk
28 May
5 Jul
0 wk
Potato
Solanum tuberosum
2 – 16 May
7 Jun
4-6 wk
13 Jun
5 Jul
2 wk after
13 Jun
25 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
20 Jun
5-7 wk
28 May
25 Jul
0 wk
1 Jun
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
4 Jun
3-4 wk
10 Jun
25 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
22 Jun
3-4 wk
30 May
13 Jul
0 wk
18 Jun
3 Jul
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
22 Jun
4-6 wk
28 May
20 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
9 Jul
3-4 wk
28 May
30 Jul
0 wk
1 Jun
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
22 Jun
4-6 wk
28 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
1 Jun
2-4 wk
28 May
15 Jun
0 wk
28 May
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Jun
15 Jun
1 wk after
1 Jun
5 Jun
1 wk after
Spinach
Spinacia oleracea
30 Apr – 7 May
24 Jul
3-4 wk
28 May
14 Aug
0 wk
24 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
29 Jun – 13 Jul
4-6 wk
10 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Apr
29 Apr
6-8 wk
28 May
10 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
6 Jun
2-4 wk
3 Jun
20 Jun
1 wk after
2 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
22 Jun
4-6 wk
28 May
20 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
24 Jun
3-4 wk
28 May
15 Jul
0 wk
1 Jun
5 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
29 Apr – 13 May
13 May
4-6 wk
10 Jun
10 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
20 May
8-10 wk
28 May
15 Jul
0 wk
2 Jul
5 Jul
5 wk after
Dill
Anethum graveolens
1 Jun
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
2 – 16 Apr
3 Jun
6-8 wk
28 May
15 Jul
0 wk
1 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
5 Mar – 2 Apr
20 May
8-12 wk
28 May
15 Jul
0 wk
2 Jul
5 Jul
5 wk after
Coriander
Coriandrum sativum
28 May
14 Aug
0 wk
18 Jun
4 Aug
3 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
5 May
8-10 wk
30 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
10 May
8-10 wk
28 May
5 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
0 wk
2 Jul
5 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
0 wk
1 Jun
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
6 Apr
10-14 wk
30 May
15 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
13 – 20 May
20 May
3-4 wk
10 Jun
10 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
15 Jul
0 wk
1 Jun
5 Jul
1 wk after
Statice
Limonium sinuatum
1 – 15 Apr
12 Apr
8-10 wk
10 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
13 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
26 Apr
6-8 wk
10 Jun
2 wk after
10 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
30 Apr
6-8 wk
8 Jun
11 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 May – 4 Jun
14 May
4-8 wk
2 Jul
5 wk after
2 Jul
5 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
18 Jun
3 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
31 May
8-12 wk
29 Jun
26 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
6 May
6-8 wk
10 Jun
17 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
2 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
20 Apr
8-10 wk
30 May
15 Jun
0 wk
Love in a mist
Nigella damascena
28 May
30 Jun
0 wk
1 Jun
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
15 – 29 Apr
16 Apr
6-8 wk
10 Jun
2 wk after
10 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
20 Apr
8-12 wk
30 May
15 Jun
0 wk
Cardoon
Cynara cardunculus
18 Mar – 15 Apr
21 Mar
8-12 wk
10 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
18 Mar – 15 Apr
5 Apr
8-12 wk
10 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
15 – 29 Apr
19 Apr
6-8 wk
10 Jun
2 wk after
Corn poppy
Papaver rhoeas
28 May
15 Jul
0 wk
1 Jun
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
10 May
8-12 wk
28 May
5 Jul
0 wk
13 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
20 Apr – 4 May
22 Apr
8-10 wk
29 Jun
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
31 May
5-8 wk
28 May
5 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
3 Jun
6-8 wk
28 May
15 Jul
0 wk
18 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
0 wk
18 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
29 Apr – 13 May
4-6 wk
10 Jun
2 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
20 May
8-10 wk
28 May
15 Jul
0 wk
13 Jun
5 Jul
2 wk after
Petunia
Petunia
18 Mar – 15 Apr
12 Apr
8-12 wk
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
4 May
6-8 wk
30 May
15 Jun
0 wk
16 Jul
7 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
13 May
4-6 wk
10 Jun
10 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
20 May
3-5 wk
10 Jun
10 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
14 May
4-6 wk
10 Jun
11 Jun
2 wk after
16 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
6 Apr – 4 May
5 May
8-12 wk
29 Jun
30 Jun
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
20 Apr
8-12 wk
28 May
15 Jun
0 wk
2 Jul
5 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
4 Apr
6-8 wk
28 May
0 wk
18 Jun
3 wk after
Safflower
Carthamus tinctorius
28 May
15 Jun
0 wk
1 Jun
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
0 wk
10 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
7 Jun
4-6 wk
28 May
5 Jul
0 wk
18 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
29 Mar
10-12 wk
3 Jun
7 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
14 Jun
3-4 wk
10 Jun
5 Jul
2 wk after
2 Jul
5 wk after
China aster
Callistephus chinensis
15 – 29 Apr
3 Jun
6-8 wk
10 Jun
15 Jul
2 wk after
16 Jul
7 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
6 May
6-8 wk
3 Jun
17 Jun
1 wk after
16 Jul
7 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
18 Jun
3 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
20 Apr
8-12 wk
28 May
15 Jun
0 wk
2 Jul
5 wk after
African marigold
Tagetes erecta
15 – 29 Apr
6 May
6-8 wk
10 Jun
17 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
24 May
6-8 wk
30 May
5 Jul
0 wk
16 Jul
7 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
10 Apr
8-10 wk
28 May
5 Jun
0 wk
2 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
29 Apr
6-10 wk
10 Jun
10 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
15 Jul
0 wk
1 Jun
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
10 May
8-10 wk
10 Jun
5 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
0 wk
18 Jun
3 wk after