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Method
Rel. frost
Last spring frost (0°C) 23 May Frost 9 of 10 years · 20 years of data
Frost-free season 80 days 23 May – 11 Aug
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)
4 – 18 Apr
14 Jun
5-7 wk
23 May
19 Jul
0 wk
27 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
26 Jun
4-6 wk
23 May
24 Jul
0 wk
27 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Apr
11 Jun
5-7 wk
23 May
16 Jul
0 wk
23 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
1 – 8 May
3-4 wk
29 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
1 – 8 May
12 May
4-5 wk
5 Jun
9 Jun
2 wk after
27 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
28 Feb – 28 Mar
18 Mar
8-12 wk
23 May
0 wk
23 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
27 May
1 wk after
27 May
1 wk after
Maize
Zea mays
Season too short
25 Apr – 2 May
3-4 wk
23 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
8 Jun
3-4 wk
25 May
29 Jun
0 wk
13 Jun
19 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
15 Jun
0 wk
23 May
5 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
11 Jun
5-7 wk
23 May
16 Jul
0 wk
23 May
6 Jul
0 wk
Potato
Solanum tuberosum
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
8 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
31 May
5-7 wk
23 May
5 Jul
0 wk
27 May
25 Jun
1 wk after
Pumpkin
Cucurbita pepo
Season too short
1 – 8 May
3-4 wk
29 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
25 Apr – 2 May
15 May
3-4 wk
23 May
5 Jun
0 wk
2 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
23 Jun
4-6 wk
23 May
21 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
19 Jun
3-4 wk
23 May
10 Jul
0 wk
27 May
30 Jun
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
23 Jun
4-6 wk
23 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Apr – 9 May
7 May
2-4 wk
23 May
0 wk
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 May
1 wk after
27 May
1 wk after
Spinach
Spinacia oleracea
25 Apr – 2 May
14 Jul
3-4 wk
23 May
4 Aug
0 wk
19 May
25 Jul
1 wk before
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
25 Apr – 9 May
2-4 wk
23 May
0 wk
13 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
23 Jun
4-6 wk
23 May
21 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
4 Jun
3-4 wk
23 May
25 Jun
0 wk
27 May
15 Jun
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
Season too short
17 Apr – 1 May
4-6 wk
29 May
1 wk after
Lemon balm
Melissa officinalis
14 – 28 Mar
30 Apr
8-10 wk
23 May
25 Jun
0 wk
27 Jun
5 wk after
Dill
Anethum graveolens
27 May
29 Jun
1 wk after
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
4 Jun
6-8 wk
23 May
16 Jul
0 wk
27 May
6 Jul
1 wk after
Spearmint
Mentha spicata
28 Feb – 28 Mar
19 May
8-12 wk
23 May
14 Jul
0 wk
27 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
23 May
19 Jul
0 wk
13 Jun
9 Jul
3 wk after
Garden sage
Salvia officinalis
16 – 30 Mar
6 May
8-10 wk
25 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
14 – 28 Mar
11 May
8-10 wk
23 May
6 Jul
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
23 May
6-8 wk
23 May
4 Jul
0 wk
27 Jun
5 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
23 May
6-8 wk
23 May
4 Jul
0 wk
27 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
14 Feb – 14 Mar
12 Mar
10-14 wk
23 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
Season too short
1 – 8 May
3-4 wk
29 May
1 wk after
Cornflower
Centaurea cyanus
23 May
14 Jul
0 wk
27 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Season too short
14 – 28 Mar
8-10 wk
23 May
0 wk
Sweet William
Dianthus barbatus
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
8 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
3 Jul
6 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
7 Apr – 5 May
7 Apr
4-8 wk
2 Jun
1 wk after
2 Jun
1 wk after
Foxglove
Digitalis purpurea
14 – 28 Mar
8-10 wk
23 May
0 wk
13 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Season too short
6 Mar – 3 Apr
28 Mar
8-12 wk
29 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
24 Apr – 8 May
4-6 wk
5 Jun
2 wk after
Chinese lantern
Physalis alkekengi
16 – 30 Mar
25 Mar
8-10 wk
25 May
0 wk
Love in a mist
Nigella damascena
23 May
10 Jun
0 wk
27 May
31 May
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
3 Jul
6 wk after
Purple-top vervain
Verbena bonariensis
2 – 30 Mar
25 Mar
8-12 wk
25 May
0 wk
Cardoon
Cynara cardunculus
Season too short
28 Feb – 28 Mar
11 Mar
8-12 wk
23 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
3 – 17 Apr
6-8 wk
29 May
1 wk after
Corn poppy
Papaver rhoeas
23 May
25 Jun
0 wk
27 May
15 Jun
1 wk after
Snapdragon
Antirrhinum majus
28 Feb – 28 Mar
20 Apr
8-12 wk
23 May
15 Jun
0 wk
8 Jun
2 wk after
Flossflower
Ageratum houstonianum
Season too short
20 Mar – 3 Apr
8-10 wk
29 May
1 wk after
Sweet pea
Lathyrus odoratus
28 Mar – 18 Apr
30 May
5-8 wk
23 May
4 Jul
0 wk
Stock
Matthiola incana
28 Mar – 11 Apr
14 May
6-8 wk
23 May
25 Jun
0 wk
13 Jun
15 Jun
3 wk after
Wormwood
Artemisia absinthium
28 Mar – 11 Apr
5 May
6-8 wk
23 May
16 Jun
0 wk
13 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
17 Apr – 1 May
4-6 wk
29 May
1 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Mar
19 May
8-10 wk
23 May
14 Jul
0 wk
8 Jun
4 Jul
2 wk after
Petunia
Petunia
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
30 Mar – 13 Apr
8 Apr
6-8 wk
25 May
0 wk
11 Jul
7 wk after
Common zinnia
Zinnia elegans
Season too short
11 – 25 Apr
4-6 wk
23 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
24 Apr – 8 May
3-5 wk
29 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
11 – 25 Apr
4-6 wk
23 May
0 wk
13 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
13 Mar – 10 Apr
8-12 wk
5 Jun
2 wk after
Bee balm
Monarda didyma
28 Feb – 28 Mar
31 Mar
8-12 wk
23 May
26 May
0 wk
27 Jun
5 wk after
Yarrow
Achillea millefolium
28 Mar – 11 Apr
5 Apr
6-8 wk
23 May
0 wk
13 Jun
3 wk after
Safflower
Carthamus tinctorius
23 May
5 Jun
0 wk
27 May
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
28 Mar – 11 Apr
25 May
6-8 wk
23 May
6 Jul
0 wk
5 May
26 Jun
3 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
18 May
4-6 wk
23 May
15 Jun
0 wk
13 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
6 – 20 Mar
10-12 wk
29 May
1 wk after
Sunflower
Helianthus annuus
Fleece
1 – 8 May
20 May
3-4 wk
29 May
10 Jun
1 wk after
13 Jun
3 wk after
China aster
Callistephus chinensis
10 – 24 Apr
29 Apr
6-8 wk
5 Jun
10 Jun
2 wk after
11 Jul
7 wk after
Annual phlox
Phlox drummondii
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
13 Jun
3 wk after
Hollyhock
Alcea rosea
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
13 Jun
3 wk after
Alpine delphinium
Delphinium elatum
28 Feb – 28 Mar
31 Mar
8-12 wk
23 May
26 May
0 wk
27 Jun
5 wk after
African marigold
Tagetes erecta
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
Black-eyed Susan
Rudbeckia hirta
30 Mar – 13 Apr
19 Apr
6-8 wk
25 May
31 May
0 wk
11 Jul
7 wk after
Wood sage
Salvia nemorosa
14 – 28 Mar
21 Mar
8-10 wk
23 May
0 wk
27 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
20 Mar – 17 Apr
6-10 wk
29 May
1 wk after
California goldenpoppy
Eschscholzia californica
23 May
20 Jun
0 wk
27 May
10 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
20 Mar – 3 Apr
14 Apr
8-10 wk
29 May
9 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
28 Mar – 11 Apr
5 May
6-8 wk
23 May
16 Jun
0 wk
13 Jun
3 wk after