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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 3 of 4 years · 20 years of data
Frost-free season 139 days 7 May – 23 Sep
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)
19 Mar – 2 Apr
17 Jun
5-7 wk
7 May
22 Jul
0 wk
30 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
29 Jun
4-6 wk
7 May
27 Jul
0 wk
30 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
22 Feb – 22 Mar
13 Apr
8-12 wk
17 May
8 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
12 Jun
5-7 wk
7 May
17 Jul
0 wk
25 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
15 – 22 May
21 May
3-4 wk
12 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
26 May
4-5 wk
12 Jun
23 Jun
5 wk after
12 Jun
13 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
28 Mar
8-12 wk
7 May
23 May
0 wk
17 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
30 Apr
12 Jun
1 wk before
30 Apr
2 Jun
1 wk before
Maize
Zea mays
29 Apr – 6 May
11 May
3-4 wk
27 May
1 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
6 Jul
3-4 wk
12 May
27 Jul
1 wk after
17 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
7 Jul
0 wk
25 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
12 Jun
5-7 wk
7 May
17 Jul
0 wk
25 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
31 Mar – 14 Apr
26 May
4-6 wk
12 May
23 Jun
1 wk after
12 May
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
22 Jun
5-7 wk
7 May
27 Jul
0 wk
30 Apr
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
15 – 22 May
12 Jun
3-4 wk
12 Jun
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
8 Jun
3-4 wk
12 May
29 Jun
1 wk after
17 May
19 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
24 Jun
4-6 wk
7 May
22 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
11 Jul
3-4 wk
7 May
1 Aug
0 wk
30 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
24 Jun
4-6 wk
7 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Mar – 11 Apr
2 Jun
2-4 wk
25 Apr
16 Jun
2 wk before
25 Apr
6 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Apr
12 Jun
1 wk before
30 Apr
2 Jun
1 wk before
Spinach
Spinacia oleracea
9 – 16 Apr
26 Jul
3-4 wk
7 May
16 Aug
0 wk
19 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
10 wk after
Garden tomato
Solanum lycopersicum
1 – 15 Apr
20 Apr
6-8 wk
27 May
1 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
29 Apr – 13 May
14 Jun
2-4 wk
27 May
28 Jun
3 wk after
12 Jun
18 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
24 Jun
4-6 wk
7 May
22 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
26 Jun
3-4 wk
7 May
17 Jul
0 wk
30 Apr
7 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
1 – 15 May
21 May
4-6 wk
12 Jun
18 Jun
5 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
22 May
8-10 wk
7 May
17 Jul
0 wk
28 May
7 Jul
3 wk after
Dill
Anethum graveolens
30 Apr
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
12 – 26 Mar
5 Jun
6-8 wk
7 May
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
12 Feb – 12 Mar
22 May
8-12 wk
7 May
17 Jul
0 wk
28 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
7 May
16 Aug
0 wk
17 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
7 May
8-10 wk
12 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
12 May
8-10 wk
7 May
7 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
26 May
6-8 wk
7 May
7 Jul
0 wk
28 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
26 May
6-8 wk
7 May
7 Jul
0 wk
30 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
29 Mar
10-14 wk
12 May
7 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
15 – 22 May
28 May
3-4 wk
12 Jun
18 Jun
5 wk after
Cornflower
Centaurea cyanus
7 May
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
18 Mar – 1 Apr
27 Apr
8-10 wk
27 May
22 Jun
3 wk after
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
12 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
1 – 15 Apr
11 May
6-8 wk
27 May
22 Jun
3 wk after
15 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
25 Mar – 8 Apr
14 May
6-8 wk
20 May
25 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
2 – 30 Apr
28 May
4-8 wk
28 May
25 Jun
3 wk after
28 May
15 Jun
3 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
17 May
1 wk after
Busy lizzie
Impatiens walleriana
20 Mar – 17 Apr
18 Jun
8-12 wk
12 Jun
13 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
15 – 29 Apr
1 May
4-6 wk
27 May
29 May
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
22 Apr
8-10 wk
12 May
17 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
2 Jul
0 wk
30 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
3 wk after
15 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
22 Apr
8-12 wk
12 May
17 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
23 Mar
8-12 wk
17 May
18 May
1 wk after
Regal-foxtail
Ptilotus nobilis
20 Mar – 17 Apr
13 Apr
8-12 wk
12 Jun
5 wk after
Globe amaranth
Gomphrena globosa
17 Apr – 1 May
27 Apr
6-8 wk
12 Jun
5 wk after
Corn poppy
Papaver rhoeas
7 May
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
12 May
8-12 wk
7 May
7 Jul
0 wk
12 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
3 – 17 Apr
7 May
8-10 wk
12 Jun
2 Jul
5 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
2 Jun
5-8 wk
7 May
7 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
5 Jun
6-8 wk
7 May
17 Jul
0 wk
17 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
6 May
6-8 wk
7 May
17 Jun
0 wk
17 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
1 – 15 May
6 May
4-6 wk
12 Jun
5 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
22 May
8-10 wk
7 May
17 Jul
0 wk
12 May
7 Jul
1 wk after
Petunia
Petunia
4 Mar – 1 Apr
27 Apr
8-12 wk
27 May
22 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
6 May
6-8 wk
12 May
17 Jun
1 wk after
12 Jun
5 wk after
Common zinnia
Zinnia elegans
15 – 29 Apr
31 May
4-6 wk
27 May
28 Jun
3 wk after
Common morning glory
Ipomoea purpurea
8 – 22 May
28 May
3-5 wk
12 Jun
18 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
15 – 29 Apr
28 May
4-6 wk
27 May
25 Jun
3 wk after
12 Jun
15 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
27 Mar – 24 Apr
13 May
8-12 wk
19 Jun
8 Jul
6 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
22 Apr
8-12 wk
7 May
17 Jun
0 wk
28 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
6 Apr
6-8 wk
7 May
18 May
0 wk
17 May
1 wk after
Safflower
Carthamus tinctorius
7 May
17 Jun
0 wk
30 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
26 May
6-8 wk
7 May
7 Jul
0 wk
29 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
9 Jun
4-6 wk
7 May
7 Jul
0 wk
17 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
4 – 18 Mar
27 Mar
10-12 wk
27 May
5 Jun
3 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
6 Jun
3-4 wk
27 May
27 Jun
3 wk after
28 May
17 Jun
3 wk after
China aster
Callistephus chinensis
1 – 15 Apr
26 May
6-8 wk
27 May
7 Jul
3 wk after
12 Jun
27 Jun
5 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
21 May
6-8 wk
17 May
2 Jul
1 wk after
12 Jun
22 Jun
5 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
17 May
1 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
22 Apr
8-12 wk
7 May
17 Jun
0 wk
28 May
7 Jun
3 wk after
African marigold
Tagetes erecta
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
16 May
6-8 wk
12 May
27 Jun
1 wk after
12 Jun
17 Jun
5 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
12 Apr
8-10 wk
7 May
7 Jun
0 wk
28 May
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
3 Apr – 1 May
7 May
6-10 wk
12 Jun
18 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
7 May
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
28 Apr
8-10 wk
27 May
23 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
6 May
6-8 wk
7 May
17 Jun
0 wk
17 May
7 Jun
1 wk after