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Method
Rel. frost
Last spring frost (0°C) 20 May Frost 1 of 4 years · 20 years of data
Frost-free season 136 days 20 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)
1 – 15 Apr
16 Jun
5-7 wk
20 May
21 Jul
0 wk
24 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
28 Jun
4-6 wk
20 May
26 Jul
0 wk
24 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
10 Mar – 7 Apr
14 Apr
8-12 wk
2 Jun
9 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Apr
11 Jun
5-7 wk
20 May
16 Jul
0 wk
20 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
24 – 31 May
8 Jun
3-4 wk
21 Jun
29 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 May
8 Jun
4-5 wk
21 Jun
6 Jul
5 wk after
8 Jul
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
31 May – 7 Jun
3-4 wk
28 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Feb – 25 Mar
1 Apr
8-12 wk
20 May
27 May
0 wk
10 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
16 Jun
1 wk after
24 May
6 Jun
1 wk after
Maize
Zea mays
5 – 12 May
29 May
3-4 wk
2 Jun
19 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 Apr – 1 May
5 Jul
3-4 wk
22 May
26 Jul
0 wk
10 Jun
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 May
6 Jul
0 wk
20 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Apr
11 Jun
5-7 wk
20 May
16 Jul
0 wk
20 May
6 Jul
0 wk
Potato
Solanum tuberosum
24 Apr – 8 May
8 Jun
4-6 wk
5 Jun
6 Jul
2 wk after
5 Jun
26 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Apr
21 Jun
5-7 wk
20 May
26 Jul
0 wk
24 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
24 – 31 May
22 Jun
3-4 wk
21 Jun
13 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Apr – 1 May
21 Jun
3-4 wk
22 May
12 Jul
0 wk
10 Jun
2 Jul
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
23 Jun
4-6 wk
20 May
21 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Apr
10 Jul
3-4 wk
20 May
31 Jul
0 wk
24 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Apr
23 Jun
4-6 wk
20 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Apr – 6 May
2 Jun
2-4 wk
20 May
16 Jun
0 wk
20 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
16 Jun
1 wk after
24 May
6 Jun
1 wk after
Spinach
Spinacia oleracea
22 – 29 Apr
25 Jul
3-4 wk
20 May
15 Aug
0 wk
16 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
11 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Apr
8 May
6-8 wk
2 Jun
19 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
24 Jun
2-4 wk
2 Jun
8 Jul
2 wk after
8 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
23 Jun
4-6 wk
20 May
21 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Apr
25 Jun
3-4 wk
20 May
16 Jul
0 wk
24 May
6 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
10 – 24 May
31 May
4-6 wk
21 Jun
28 Jun
5 wk after
Lemon balm
Melissa officinalis
11 – 25 Mar
21 May
8-10 wk
20 May
16 Jul
0 wk
24 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
24 May
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
25 Mar – 8 Apr
4 Jun
6-8 wk
20 May
16 Jul
0 wk
24 May
6 Jul
1 wk after
Spearmint
Mentha spicata
25 Feb – 25 Mar
21 May
8-12 wk
20 May
16 Jul
0 wk
24 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
20 May
15 Aug
0 wk
10 Jun
5 Aug
3 wk after
Garden sage
Salvia officinalis
13 – 27 Mar
6 May
8-10 wk
22 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
11 – 25 Mar
11 May
8-10 wk
20 May
6 Jul
0 wk
Oregano
Origanum vulgare
25 Mar – 8 Apr
25 May
6-8 wk
20 May
6 Jul
0 wk
24 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
25 Mar – 8 Apr
25 May
6-8 wk
20 May
6 Jul
0 wk
24 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
13 Feb – 13 Mar
7 Apr
10-14 wk
22 May
16 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
24 – 31 May
7 Jun
3-4 wk
21 Jun
28 Jun
5 wk after
Cornflower
Centaurea cyanus
20 May
16 Jul
0 wk
24 May
6 Jul
1 wk after
Statice
Limonium sinuatum
24 Mar – 7 Apr
6 May
8-10 wk
2 Jun
1 Jul
2 wk after
Sweet William
Dianthus barbatus
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
5 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
20 May
6-8 wk
2 Jun
1 Jul
2 wk after
2 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Apr
25 May
6-8 wk
31 May
6 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
29 Apr – 27 May
8 Jun
4-8 wk
24 Jun
6 Jul
5 wk after
24 Jun
26 Jun
5 wk after
Foxglove
Digitalis purpurea
11 – 25 Mar
8-10 wk
20 May
0 wk
10 Jun
3 wk after
Busy lizzie
Impatiens walleriana
29 Mar – 26 Apr
29 Jun
8-12 wk
21 Jun
24 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
30 May
6-8 wk
2 Jun
11 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
21 Apr – 5 May
12 May
4-6 wk
2 Jun
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Mar
21 Apr
8-10 wk
22 May
16 Jun
0 wk
Love in a mist
Nigella damascena
20 May
1 Jul
0 wk
24 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
10 May
6-8 wk
2 Jun
21 Jun
2 wk after
2 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
27 Feb – 27 Mar
21 Apr
8-12 wk
22 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
10 Mar – 7 Apr
22 Mar
8-12 wk
2 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
29 Mar – 26 Apr
23 Apr
8-12 wk
21 Jun
5 wk after
Globe amaranth
Gomphrena globosa
26 Apr – 10 May
7 May
6-8 wk
21 Jun
5 wk after
Corn poppy
Papaver rhoeas
20 May
16 Jul
0 wk
24 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
25 Feb – 25 Mar
11 May
8-12 wk
20 May
6 Jul
0 wk
5 Jun
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
12 – 26 Apr
16 May
8-10 wk
21 Jun
11 Jul
5 wk after
Sweet pea
Lathyrus odoratus
25 Mar – 15 Apr
1 Jun
5-8 wk
20 May
6 Jul
0 wk
Stock
Matthiola incana
25 Mar – 8 Apr
4 Jun
6-8 wk
20 May
16 Jul
0 wk
10 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
25 Mar – 8 Apr
5 May
6-8 wk
20 May
16 Jun
0 wk
10 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
10 – 24 May
16 May
4-6 wk
21 Jun
5 wk after
Garden pansy
Viola × wittrockiana
11 – 25 Mar
21 May
8-10 wk
20 May
16 Jul
0 wk
5 Jun
6 Jul
2 wk after
Petunia
Petunia
10 Mar – 7 Apr
6 May
8-12 wk
2 Jun
1 Jul
2 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Mar – 10 Apr
5 May
6-8 wk
22 May
16 Jun
0 wk
8 Jul
7 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
11 Jun
4-6 wk
2 Jun
9 Jul
2 wk after
Common morning glory
Ipomoea purpurea
17 – 31 May
7 Jun
3-5 wk
21 Jun
28 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
8 Jun
4-6 wk
2 Jun
6 Jul
2 wk after
8 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
19 Apr – 17 May
23 May
8-12 wk
12 Jul
18 Jul
8 wk after
Bee balm
Monarda didyma
25 Feb – 25 Mar
21 Apr
8-12 wk
20 May
16 Jun
0 wk
24 Jun
5 wk after
Yarrow
Achillea millefolium
25 Mar – 8 Apr
5 Apr
6-8 wk
20 May
0 wk
10 Jun
3 wk after
Safflower
Carthamus tinctorius
20 May
16 Jun
0 wk
24 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
25 Mar – 8 Apr
25 May
6-8 wk
20 May
6 Jul
0 wk
2 May
26 Jun
3 wk before
Bishop's flower
Ammi majus
8 – 22 Apr
8 Jun
4-6 wk
20 May
6 Jul
0 wk
10 Jun
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
29 Mar – 12 Apr
31 Mar
10-12 wk
21 Jun
5 wk after
Sunflower
Helianthus annuus
5 – 12 May
15 Jun
3-4 wk
2 Jun
6 Jul
2 wk after
24 Jun
26 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
4 Jun
6-8 wk
2 Jun
16 Jul
2 wk after
8 Jul
7 wk after
Annual phlox
Phlox drummondii
31 Mar – 14 Apr
30 May
6-8 wk
26 May
11 Jul
1 wk after
8 Jul
7 wk after
Hollyhock
Alcea rosea
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
10 Jun
3 wk after
Alpine delphinium
Delphinium elatum
25 Feb – 25 Mar
21 Apr
8-12 wk
20 May
16 Jun
0 wk
24 Jun
5 wk after
African marigold
Tagetes erecta
7 – 21 Apr
30 May
6-8 wk
2 Jun
11 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
27 Mar – 10 Apr
25 May
6-8 wk
22 May
6 Jul
0 wk
8 Jul
7 wk after
Wood sage
Salvia nemorosa
11 – 25 Mar
11 Apr
8-10 wk
20 May
6 Jun
0 wk
24 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
12 Apr – 10 May
17 May
6-10 wk
21 Jun
28 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
20 May
16 Jul
0 wk
24 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
11 May
8-10 wk
2 Jun
6 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
25 Mar – 8 Apr
5 May
6-8 wk
20 May
16 Jun
0 wk
10 Jun
3 wk after