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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 4 years · 20 years of data
Frost-free season 109 days 28 May – 14 Sep
Probability that frost is over

75% = 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
9 Jun
5-7 wk
28 May
14 Jul
0 wk
29 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
29 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
11 Mar – 8 Apr
22 Mar
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
4 Jun
5-7 wk
28 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
12 Jun
3-4 wk
3 Jun
3 Jul
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
1 Jun
4-5 wk
10 Jun
29 Jun
2 wk after
22 Jun
4 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)
Fleece
5 Mar – 2 Apr
25 Mar
8-12 wk
28 May
0 wk
3 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
2 Jun
0 wk
29 May
0 wk
Maize
Zea mays
Greenhouse
30 Apr – 7 May
2 Jun
3-4 wk
28 May
23 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
28 Jun
3-4 wk
30 May
19 Jul
0 wk
10 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
29 Jun
0 wk
28 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
4 Jun
5-7 wk
28 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Potato
Solanum tuberosum
Fleece
17 Apr – 1 May
25 May
4-6 wk
29 May
22 Jun
0 wk
29 May
12 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
14 Jun
5-7 wk
28 May
19 Jul
0 wk
29 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
17 Jun
3-4 wk
10 Jun
8 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
18 May
3-4 wk
30 May
8 Jun
0 wk
10 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
16 Jun
4-6 wk
28 May
14 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
3 Jul
3-4 wk
28 May
24 Jul
0 wk
29 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
16 Jun
4-6 wk
28 May
14 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
26 May
2-4 wk
28 May
9 Jun
0 wk
28 May
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
2 Jun
0 wk
29 May
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
18 Jul
3-4 wk
28 May
8 Aug
0 wk
25 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Apr
12 May
6-8 wk
28 May
23 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
19 Jun
2-4 wk
3 Jun
3 Jul
1 wk after
22 Jun
23 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
16 Jun
4-6 wk
28 May
14 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
18 Jun
3-4 wk
28 May
9 Jul
0 wk
29 May
29 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
Fleece
29 Apr – 13 May
26 May
4-6 wk
10 Jun
23 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
14 May
8-10 wk
28 May
9 Jul
0 wk
22 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
29 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
28 May
6-8 wk
28 May
9 Jul
0 wk
29 May
29 Jun
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
14 May
8-12 wk
28 May
9 Jul
0 wk
22 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
28 May
8 Aug
0 wk
10 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
29 Apr
8-10 wk
30 May
24 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
4 May
8-10 wk
28 May
29 Jun
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
18 May
6-8 wk
28 May
29 Jun
0 wk
22 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
18 May
6-8 wk
28 May
29 Jun
0 wk
29 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
30 Mar
10-14 wk
30 May
8 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
2 Jun
3-4 wk
10 Jun
23 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
9 Jul
0 wk
29 May
29 Jun
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
23 Apr
8-10 wk
10 Jun
18 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
7 May
6-8 wk
10 Jun
18 Jun
2 wk after
3 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
11 May
6-8 wk
8 Jun
22 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
15 Apr – 13 May
1 Jun
4-8 wk
10 Jun
29 Jun
2 wk after
10 Jun
19 Jun
2 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
10 Jun
2 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
13 Jun
8-12 wk
29 Jun
8 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
17 May
6-8 wk
10 Jun
28 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
14 Apr
8-10 wk
30 May
9 Jun
0 wk
Love in a mist
Nigella damascena
28 May
24 Jun
0 wk
29 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
8 – 22 Apr
8 May
6-8 wk
3 Jun
19 Jun
1 wk after
17 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
14 Apr
8-12 wk
30 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
5 Mar – 2 Apr
15 Mar
8-12 wk
28 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
18 Mar – 15 Apr
18 Apr
8-12 wk
10 Jun
13 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
15 – 29 Apr
2 May
6-8 wk
10 Jun
13 Jun
2 wk after
Corn poppy
Papaver rhoeas
28 May
9 Jul
0 wk
29 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
4 May
8-12 wk
28 May
29 Jun
0 wk
7 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
20 Apr – 4 May
3 May
8-10 wk
29 Jun
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
25 May
5-8 wk
28 May
29 Jun
0 wk
Stock
Matthiola incana
2 – 16 Apr
28 May
6-8 wk
28 May
9 Jul
0 wk
10 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
28 Apr
6-8 wk
28 May
9 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
20 May
4-6 wk
3 Jun
17 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
14 May
8-10 wk
28 May
9 Jul
0 wk
7 Jun
29 Jun
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
23 Apr
8-12 wk
10 Jun
18 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
28 Apr
6-8 wk
30 May
9 Jun
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
26 May
4-6 wk
10 Jun
23 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
2 Jun
3-5 wk
10 Jun
23 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
25 May
4-6 wk
10 Jun
22 Jun
2 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
6 Apr – 4 May
18 May
8-12 wk
29 Jun
13 Jul
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
14 Apr
8-12 wk
28 May
9 Jun
0 wk
22 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Safflower
Carthamus tinctorius
28 May
9 Jun
0 wk
29 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
18 May
6-8 wk
28 May
29 Jun
0 wk
12 May
19 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
1 Jun
4-6 wk
28 May
29 Jun
0 wk
10 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
31 Mar
10-12 wk
3 Jun
9 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
7 Jun
3-4 wk
10 Jun
28 Jun
2 wk after
22 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
27 May
6-8 wk
10 Jun
8 Jul
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
17 May
6-8 wk
3 Jun
28 Jun
1 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
14 Apr
8-12 wk
28 May
9 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
17 May
6-8 wk
10 Jun
28 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
17 May
6-8 wk
30 May
28 Jun
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
4 Apr
8-10 wk
28 May
30 May
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
12 May
6-10 wk
10 Jun
23 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
9 Jul
0 wk
29 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
23 Apr
8-10 wk
10 Jun
18 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
28 Apr
6-8 wk
28 May
9 Jun
0 wk
10 Jun
2 wk after