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