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Method
Rel. frost
Last spring frost (0°C) 24 May Frost 9 of 10 years · 20 years of data
Frost-free season 102 days 24 May – 3 Sep
Probability that frost is over

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