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Method
Rel. frost
Last spring frost (0°C) 23 May Frost 1 of 10 years · 20 years of data
Frost-free season 135 days 23 May – 5 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)
4 – 18 Apr
15 Jun
5-7 wk
23 May
20 Jul
0 wk
27 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
27 Jun
4-6 wk
23 May
25 Jul
0 wk
27 May
15 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
10 Jun
5-7 wk
23 May
15 Jul
0 wk
23 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
1 – 8 May
13 May
3-4 wk
29 May
3 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 May
7 Jun
4-5 wk
24 Jun
5 Jul
5 wk after
11 Jul
7 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)
28 Feb – 28 Mar
31 Mar
8-12 wk
23 May
26 May
0 wk
13 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 May
15 Jun
1 wk after
27 May
5 Jun
1 wk after
Maize
Zea mays
Greenhouse
25 Apr – 2 May
3 May
3-4 wk
23 May
24 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
4 Jul
3-4 wk
25 May
25 Jul
0 wk
13 Jun
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
5 Jul
0 wk
23 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
10 Jun
5-7 wk
23 May
15 Jul
0 wk
23 May
5 Jul
0 wk
Potato
Solanum tuberosum
27 Apr – 11 May
7 Jun
4-6 wk
8 Jun
5 Jul
2 wk after
8 Jun
25 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
20 Jun
5-7 wk
23 May
25 Jul
0 wk
27 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
8 – 15 May
18 May
3-4 wk
5 Jun
8 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Apr – 4 May
20 Jun
3-4 wk
25 May
11 Jul
0 wk
13 Jun
1 Jul
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
22 Jun
4-6 wk
23 May
20 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
9 Jul
3-4 wk
23 May
30 Jul
0 wk
27 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
22 Jun
4-6 wk
23 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Apr – 9 May
1 Jun
2-4 wk
23 May
15 Jun
0 wk
23 May
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 May
15 Jun
1 wk after
27 May
5 Jun
1 wk after
Spinach
Spinacia oleracea
25 Apr – 2 May
24 Jul
3-4 wk
23 May
14 Aug
0 wk
19 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
28 Mar – 11 Apr
12 Apr
6-8 wk
23 May
24 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
1 – 15 May
20 May
2-4 wk
29 May
3 Jun
1 wk after
27 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
22 Jun
4-6 wk
23 May
20 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
24 Jun
3-4 wk
23 May
15 Jul
0 wk
27 May
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
Greenhouse
17 Apr – 1 May
20 May
4-6 wk
29 May
17 Jun
1 wk after
Lemon balm
Melissa officinalis
14 – 28 Mar
20 May
8-10 wk
23 May
15 Jul
0 wk
27 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
27 May
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
3 Jun
6-8 wk
23 May
15 Jul
0 wk
27 May
5 Jul
1 wk after
Spearmint
Mentha spicata
28 Feb – 28 Mar
20 May
8-12 wk
23 May
15 Jul
0 wk
27 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
23 May
14 Aug
0 wk
13 Jun
4 Aug
3 wk after
Garden sage
Salvia officinalis
16 – 30 Mar
5 May
8-10 wk
25 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
14 – 28 Mar
10 May
8-10 wk
23 May
5 Jul
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
24 May
6-8 wk
23 May
5 Jul
0 wk
27 Jun
5 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
24 May
6-8 wk
23 May
5 Jul
0 wk
27 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
16 Feb – 16 Mar
6 Apr
10-14 wk
25 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
Greenhouse
1 – 8 May
27 May
3-4 wk
29 May
17 Jun
1 wk after
Cornflower
Centaurea cyanus
23 May
15 Jul
0 wk
27 May
5 Jul
1 wk after
Statice
Limonium sinuatum
27 Mar – 10 Apr
1 Apr
8-10 wk
5 Jun
2 wk after
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
10 – 24 Apr
15 Apr
6-8 wk
5 Jun
2 wk after
5 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Apr
26 Apr
6-8 wk
3 Jun
7 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
2 – 30 May
10 May
4-8 wk
27 Jun
5 wk after
27 Jun
5 wk after
Foxglove
Digitalis purpurea
14 – 28 Mar
8-10 wk
23 May
0 wk
13 Jun
3 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
14 May
8-12 wk
24 Jun
9 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Apr
25 Apr
6-8 wk
5 Jun
6 Jun
2 wk after
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
20 Apr
8-10 wk
25 May
15 Jun
0 wk
Love in a mist
Nigella damascena
23 May
30 Jun
0 wk
27 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
3 – 17 Apr
26 Apr
6-8 wk
29 May
7 Jun
1 wk after
21 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
2 – 30 Mar
20 Apr
8-12 wk
25 May
15 Jun
0 wk
Cardoon
Cynara cardunculus
13 Mar – 10 Apr
21 Mar
8-12 wk
5 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
6 Mar – 3 Apr
12 Apr
8-12 wk
29 May
7 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
3 – 17 Apr
26 Apr
6-8 wk
29 May
7 Jun
1 wk after
Corn poppy
Papaver rhoeas
23 May
15 Jul
0 wk
27 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
28 Feb – 28 Mar
10 May
8-12 wk
23 May
5 Jul
0 wk
8 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
15 – 29 Apr
8-10 wk
24 Jun
5 wk after
Sweet pea
Lathyrus odoratus
28 Mar – 18 Apr
31 May
5-8 wk
23 May
5 Jul
0 wk
Stock
Matthiola incana
28 Mar – 11 Apr
3 Jun
6-8 wk
23 May
15 Jul
0 wk
13 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
28 Mar – 11 Apr
4 May
6-8 wk
23 May
15 Jun
0 wk
13 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
17 Apr – 1 May
5 May
4-6 wk
29 May
2 Jun
1 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Mar
20 May
8-10 wk
23 May
15 Jul
0 wk
8 Jun
5 Jul
2 wk after
Petunia
Petunia
13 Mar – 10 Apr
1 Apr
8-12 wk
5 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
30 Mar – 13 Apr
4 May
6-8 wk
25 May
15 Jun
0 wk
11 Jul
7 wk after
Common zinnia
Zinnia elegans
Fleece
17 Apr – 1 May
20 May
4-6 wk
29 May
17 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
24 Apr – 8 May
27 May
3-5 wk
29 May
17 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
24 Apr – 8 May
10 May
4-6 wk
5 Jun
7 Jun
2 wk after
11 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
1 – 29 Apr
18 Apr
8-12 wk
24 Jun
5 wk after
Bee balm
Monarda didyma
28 Feb – 28 Mar
20 Apr
8-12 wk
23 May
15 Jun
0 wk
27 Jun
5 wk after
Yarrow
Achillea millefolium
28 Mar – 11 Apr
4 Apr
6-8 wk
23 May
0 wk
13 Jun
3 wk after
Safflower
Carthamus tinctorius
23 May
15 Jun
0 wk
27 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
28 Mar – 11 Apr
24 May
6-8 wk
23 May
5 Jul
0 wk
5 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
7 Jun
4-6 wk
23 May
5 Jul
0 wk
13 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
6 – 20 Mar
22 Mar
10-12 wk
29 May
31 May
1 wk after
Sunflower
Helianthus annuus
8 – 15 May
14 Jun
3-4 wk
5 Jun
5 Jul
2 wk after
27 Jun
5 wk after
China aster
Callistephus chinensis
10 – 24 Apr
3 Jun
6-8 wk
5 Jun
15 Jul
2 wk after
11 Jul
7 wk after
Annual phlox
Phlox drummondii
3 – 17 Apr
25 Apr
6-8 wk
29 May
6 Jun
1 wk after
11 Jul
7 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
20 Apr
8-12 wk
23 May
15 Jun
0 wk
27 Jun
5 wk after
African marigold
Tagetes erecta
10 – 24 Apr
25 Apr
6-8 wk
5 Jun
6 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
30 Mar – 13 Apr
24 May
6-8 wk
25 May
5 Jul
0 wk
11 Jul
7 wk after
Wood sage
Salvia nemorosa
14 – 28 Mar
10 Apr
8-10 wk
23 May
5 Jun
0 wk
27 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
20 Mar – 17 Apr
6 May
6-10 wk
29 May
17 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
23 May
15 Jul
0 wk
27 May
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
27 Mar – 10 Apr
10 May
8-10 wk
5 Jun
5 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
28 Mar – 11 Apr
4 May
6-8 wk
23 May
15 Jun
0 wk
13 Jun
3 wk after