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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 3 of 4 years · 20 years of data
Frost-free season 103 days 19 May – 30 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)
31 Mar – 14 Apr
12 Jun
5-7 wk
19 May
17 Jul
0 wk
20 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
24 Jun
4-6 wk
19 May
22 Jul
0 wk
20 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
15 Mar
8-12 wk
25 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
7 Jun
5-7 wk
19 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
27 Apr – 4 May
24 May
3-4 wk
25 May
14 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
24 May
4-5 wk
1 Jun
21 Jun
2 wk after
13 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
24 Feb – 24 Mar
17 Mar
8-12 wk
19 May
0 wk
25 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 May
24 May
0 wk
20 May
0 wk
Maize
Zea mays
Fleece
27 Apr – 4 May
29 Apr
3-4 wk
25 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
20 Jun
3-4 wk
21 May
11 Jul
0 wk
1 Jun
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
29 Jun
0 wk
19 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
7 Jun
5-7 wk
19 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
28 Apr
4-6 wk
29 May
1 wk after
29 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
14 Jun
5-7 wk
19 May
19 Jul
0 wk
20 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
4 – 11 May
29 May
3-4 wk
1 Jun
19 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
12 May
3-4 wk
21 May
2 Jun
0 wk
1 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
3 Jul
3-4 wk
19 May
24 Jul
0 wk
20 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
16 May
2-4 wk
19 May
30 May
0 wk
19 May
20 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 May
24 May
0 wk
20 May
0 wk
Spinach
Spinacia oleracea
21 – 28 Apr
21 Jul
3-4 wk
19 May
11 Aug
0 wk
16 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
30 Mar – 13 Apr
8 Apr
6-8 wk
25 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
27 Apr – 11 May
31 May
2-4 wk
25 May
14 Jun
1 wk after
13 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
18 Jun
3-4 wk
19 May
9 Jul
0 wk
20 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
20 Apr – 4 May
7 May
4-6 wk
1 Jun
4 Jun
2 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
14 May
8-10 wk
19 May
9 Jul
0 wk
13 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
20 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
31 May
6-8 wk
19 May
12 Jul
0 wk
20 May
2 Jul
0 wk
Spearmint
Mentha spicata
24 Feb – 24 Mar
17 May
8-12 wk
19 May
12 Jul
0 wk
13 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
19 May
31 Jul
0 wk
1 Jun
21 Jul
2 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
2 May
8-10 wk
21 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
10 – 24 Mar
7 May
8-10 wk
19 May
2 Jul
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
21 May
6-8 wk
19 May
2 Jul
0 wk
13 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
21 May
6-8 wk
19 May
2 Jul
0 wk
20 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
12 Feb – 12 Mar
16 Mar
10-14 wk
21 May
25 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
4 – 11 May
14 May
3-4 wk
1 Jun
4 Jun
2 wk after
Cornflower
Centaurea cyanus
19 May
12 Jul
0 wk
20 May
2 Jul
0 wk
Statice
Limonium sinuatum
23 Mar – 6 Apr
8 Apr
8-10 wk
1 Jun
3 Jun
2 wk after
Sweet William
Dianthus barbatus
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
29 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
22 Apr
6-8 wk
1 Jun
3 Jun
2 wk after
25 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
4 – 18 Apr
29 Apr
6-8 wk
30 May
10 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
6 Apr – 4 May
22 May
4-8 wk
1 Jun
19 Jun
2 wk after
1 Jun
9 Jun
2 wk after
Foxglove
Digitalis purpurea
10 – 24 Mar
8-10 wk
19 May
0 wk
1 Jun
2 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
25 May
8-12 wk
20 Jun
20 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
2 May
6-8 wk
1 Jun
13 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
2 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
6 Apr
8-10 wk
21 May
1 Jun
0 wk
Love in a mist
Nigella damascena
19 May
24 Jun
0 wk
20 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
24 Apr
6-8 wk
25 May
5 Jun
1 wk after
8 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
6 Apr
8-12 wk
21 May
1 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
24 Feb – 24 Mar
18 Mar
8-12 wk
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
2 – 30 Mar
15 Apr
8-12 wk
25 May
10 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
30 Mar – 13 Apr
29 Apr
6-8 wk
25 May
10 Jun
1 wk after
Corn poppy
Papaver rhoeas
19 May
9 Jul
0 wk
20 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
24 Feb – 24 Mar
4 May
8-12 wk
19 May
29 Jun
0 wk
29 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
23 Mar – 6 Apr
30 Apr
8-10 wk
1 Jun
25 Jun
2 wk after
Sweet pea
Lathyrus odoratus
24 Mar – 14 Apr
28 May
5-8 wk
19 May
2 Jul
0 wk
Stock
Matthiola incana
24 Mar – 7 Apr
28 May
6-8 wk
19 May
9 Jul
0 wk
1 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
24 Mar – 7 Apr
1 May
6-8 wk
19 May
12 Jun
0 wk
1 Jun
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
13 – 27 Apr
8 May
4-6 wk
25 May
5 Jun
1 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Mar
17 May
8-10 wk
19 May
12 Jul
0 wk
29 May
2 Jul
1 wk after
Petunia
Petunia
9 Mar – 6 Apr
8 Apr
8-12 wk
1 Jun
3 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
20 Apr
6-8 wk
21 May
1 Jun
0 wk
1 Jul
6 wk after
Common zinnia
Zinnia elegans
20 Apr – 4 May
7 May
4-6 wk
1 Jun
4 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
27 Apr – 11 May
14 May
3-5 wk
1 Jun
4 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
20 Apr – 4 May
13 May
4-6 wk
1 Jun
10 Jun
2 wk after
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
9 Mar – 6 Apr
15 May
8-12 wk
1 Jun
10 Jul
2 wk after
Bee balm
Monarda didyma
24 Feb – 24 Mar
14 Apr
8-12 wk
19 May
9 Jun
0 wk
13 Jun
4 wk after
Yarrow
Achillea millefolium
24 Mar – 7 Apr
1 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Safflower
Carthamus tinctorius
19 May
12 Jun
0 wk
20 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
24 Mar – 7 Apr
21 May
6-8 wk
19 May
2 Jul
0 wk
3 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
7 – 21 Apr
1 Jun
4-6 wk
19 May
29 Jun
0 wk
1 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
21 Mar
10-12 wk
25 May
30 May
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
24 May
3-4 wk
1 Jun
14 Jun
2 wk after
13 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
13 May
6-8 wk
1 Jun
24 Jun
2 wk after
1 Jul
6 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
1 wk after
1 Jul
6 wk after
Hollyhock
Alcea rosea
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Alpine delphinium
Delphinium elatum
24 Feb – 24 Mar
14 Apr
8-12 wk
19 May
9 Jun
0 wk
13 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
2 May
6-8 wk
1 Jun
13 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
3 May
6-8 wk
21 May
14 Jun
0 wk
1 Jul
6 wk after
Wood sage
Salvia nemorosa
10 – 24 Mar
4 Apr
8-10 wk
19 May
30 May
0 wk
13 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
23 Mar – 20 Apr
23 Apr
6-10 wk
1 Jun
4 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
19 May
8 Jul
0 wk
20 May
28 Jun
0 wk
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
11 Apr
8-10 wk
1 Jun
6 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
24 Mar – 7 Apr
1 May
6-8 wk
19 May
12 Jun
0 wk
1 Jun
2 Jun
2 wk after