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Method
Rel. frost
Last spring frost (0°C) 18 May Frost 1 of 4 years · 20 years of data
Frost-free season 138 days 18 May – 3 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)
30 Mar – 13 Apr
17 Jun
5-7 wk
18 May
22 Jul
0 wk
11 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
29 Jun
4-6 wk
18 May
27 Jul
0 wk
11 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
8 Mar – 5 Apr
11 Apr
8-12 wk
31 May
6 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
12 Jun
5-7 wk
18 May
17 Jul
0 wk
6 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
22 – 29 May
5 Jun
3-4 wk
19 Jun
26 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
8 Jun
4-5 wk
19 Jun
6 Jul
5 wk after
23 Jun
26 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
29 May – 5 Jun
29 May
3-4 wk
26 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Feb – 23 Mar
2 Apr
8-12 wk
18 May
28 May
0 wk
28 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
17 Jun
1 wk before
11 May
7 Jun
1 wk before
Maize
Zea mays
3 – 10 May
26 May
3-4 wk
31 May
16 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
6 Jul
3-4 wk
20 May
27 Jul
0 wk
28 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
7 Jul
0 wk
6 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
12 Jun
5-7 wk
18 May
17 Jul
0 wk
6 May
7 Jul
2 wk before
Potato
Solanum tuberosum
11 – 25 Apr
8 Jun
4-6 wk
23 May
6 Jul
1 wk after
23 May
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
22 Jun
5-7 wk
18 May
27 Jul
0 wk
11 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 May
20 Jun
3-4 wk
19 Jun
11 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
20 Jun
3-4 wk
20 May
11 Jul
0 wk
28 May
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
24 Jun
4-6 wk
18 May
22 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
11 Jul
3-4 wk
18 May
1 Aug
0 wk
11 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
24 Jun
4-6 wk
18 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
3 Jun
2-4 wk
6 May
17 Jun
2 wk before
6 May
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
17 Jun
1 wk before
11 May
7 Jun
1 wk before
Spinach
Spinacia oleracea
20 – 27 Apr
26 Jul
3-4 wk
18 May
16 Aug
0 wk
30 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
10 wk after
Garden tomato
Solanum lycopersicum
5 – 19 Apr
5 May
6-8 wk
31 May
16 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
22 Jun
2-4 wk
31 May
6 Jul
2 wk after
23 Jun
26 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
24 Jun
4-6 wk
18 May
22 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
26 Jun
3-4 wk
18 May
17 Jul
0 wk
11 May
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
8 – 22 May
29 May
4-6 wk
19 Jun
26 Jun
5 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
22 May
8-10 wk
18 May
17 Jul
0 wk
8 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
11 May
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
5 Jun
6-8 wk
18 May
17 Jul
0 wk
11 May
7 Jul
1 wk before
Spearmint
Mentha spicata
23 Feb – 23 Mar
22 May
8-12 wk
18 May
17 Jul
0 wk
8 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
18 May
16 Aug
0 wk
28 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
7 May
8-10 wk
20 May
2 Jul
0 wk
Common thyme
Thymus vulgaris
9 – 23 Mar
12 May
8-10 wk
18 May
7 Jul
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
26 May
6-8 wk
18 May
7 Jul
0 wk
8 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
26 May
6-8 wk
18 May
7 Jul
0 wk
11 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
8 Apr
10-14 wk
20 May
17 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
22 – 29 May
5 Jun
3-4 wk
19 Jun
26 Jun
5 wk after
Cornflower
Centaurea cyanus
18 May
17 Jul
0 wk
11 May
7 Jul
1 wk before
Statice
Limonium sinuatum
22 Mar – 5 Apr
9 May
8-10 wk
31 May
4 Jul
2 wk after
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
23 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
23 May
6-8 wk
31 May
4 Jul
2 wk after
26 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Apr
26 May
6-8 wk
29 May
7 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
13 Apr – 11 May
9 Jun
4-8 wk
8 Jun
7 Jul
3 wk after
8 Jun
27 Jun
3 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
28 May
1 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
29 Jun
8-12 wk
19 Jun
24 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
2 Jun
6-8 wk
31 May
14 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
19 Apr – 3 May
12 May
4-6 wk
31 May
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
22 Apr
8-10 wk
20 May
17 Jun
0 wk
Love in a mist
Nigella damascena
18 May
2 Jul
0 wk
11 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
5 – 19 Apr
13 May
6-8 wk
31 May
24 Jun
2 wk after
26 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
22 Apr
8-12 wk
20 May
17 Jun
0 wk
Cardoon
Cynara cardunculus
8 Mar – 5 Apr
23 Mar
8-12 wk
31 May
2 wk after
Regal-foxtail
Ptilotus nobilis
27 Mar – 24 Apr
21 Apr
8-12 wk
19 Jun
5 wk after
Globe amaranth
Gomphrena globosa
24 Apr – 8 May
5 May
6-8 wk
19 Jun
5 wk after
Corn poppy
Papaver rhoeas
18 May
17 Jul
0 wk
11 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
12 May
8-12 wk
18 May
7 Jul
0 wk
23 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
19 May
8-10 wk
19 Jun
14 Jul
5 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
2 Jun
5-8 wk
18 May
7 Jul
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
5 Jun
6-8 wk
18 May
17 Jul
0 wk
28 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
6 May
6-8 wk
18 May
17 Jun
0 wk
28 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
8 – 22 May
14 May
4-6 wk
19 Jun
5 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Mar
22 May
8-10 wk
18 May
17 Jul
0 wk
23 May
7 Jul
1 wk after
Petunia
Petunia
8 Mar – 5 Apr
9 May
8-12 wk
31 May
4 Jul
2 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
6 May
6-8 wk
20 May
17 Jun
0 wk
23 Jun
5 wk after
Common zinnia
Zinnia elegans
19 Apr – 3 May
11 Jun
4-6 wk
31 May
9 Jul
2 wk after
Common morning glory
Ipomoea purpurea
15 – 29 May
5 Jun
3-5 wk
19 Jun
26 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
19 Apr – 3 May
9 Jun
4-6 wk
31 May
7 Jul
2 wk after
23 Jun
27 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
17 Apr – 15 May
21 May
8-12 wk
10 Jul
16 Jul
8 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
22 Apr
8-12 wk
18 May
17 Jun
0 wk
8 Jun
3 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
6 Apr
6-8 wk
18 May
18 May
0 wk
28 May
1 wk after
Safflower
Carthamus tinctorius
18 May
17 Jun
0 wk
11 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
26 May
6-8 wk
18 May
7 Jul
0 wk
9 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
9 Jun
4-6 wk
18 May
7 Jul
0 wk
28 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
27 Mar – 10 Apr
31 Mar
10-12 wk
19 Jun
5 wk after
Sunflower
Helianthus annuus
3 – 10 May
16 Jun
3-4 wk
31 May
7 Jul
2 wk after
8 Jun
27 Jun
3 wk after
China aster
Callistephus chinensis
5 – 19 Apr
5 Jun
6-8 wk
31 May
17 Jul
2 wk after
23 Jun
7 Jul
5 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
2 Jun
6-8 wk
24 May
14 Jul
1 wk after
23 Jun
4 Jul
5 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 May
1 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
22 Apr
8-12 wk
18 May
17 Jun
0 wk
8 Jun
3 wk after
African marigold
Tagetes erecta
5 – 19 Apr
2 Jun
6-8 wk
31 May
14 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
26 May
6-8 wk
20 May
7 Jul
0 wk
23 Jun
27 Jun
5 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
12 Apr
8-10 wk
18 May
7 Jun
0 wk
8 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
10 Apr – 8 May
15 May
6-10 wk
19 Jun
26 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
18 May
17 Jul
0 wk
11 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
11 May
8-10 wk
31 May
6 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
6 May
6-8 wk
18 May
17 Jun
0 wk
28 May
7 Jun
1 wk after