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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
17 Jun
5-7 wk
20 May
22 Jul
0 wk
13 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
29 Jun
4-6 wk
20 May
27 Jul
0 wk
13 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
10 Mar – 7 Apr
12 Apr
8-12 wk
2 Jun
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Apr
12 Jun
5-7 wk
20 May
17 Jul
0 wk
8 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
24 – 31 May
6 Jun
3-4 wk
21 Jun
27 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 May
8 Jun
4-5 wk
21 Jun
6 Jul
5 wk after
25 Jun
26 Jun
5 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
2 Apr
8-12 wk
20 May
28 May
0 wk
30 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
17 Jun
1 wk before
13 May
7 Jun
1 wk before
Maize
Zea mays
5 – 12 May
27 May
3-4 wk
2 Jun
17 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 Apr – 1 May
6 Jul
3-4 wk
22 May
27 Jul
0 wk
30 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 May
7 Jul
0 wk
8 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Apr
12 Jun
5-7 wk
20 May
17 Jul
0 wk
8 May
7 Jul
2 wk before
Potato
Solanum tuberosum
13 – 27 Apr
8 Jun
4-6 wk
25 May
6 Jul
1 wk after
25 May
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Apr
22 Jun
5-7 wk
20 May
27 Jul
0 wk
13 May
17 Jul
1 wk before
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
20 Jun
3-4 wk
22 May
11 Jul
0 wk
30 May
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
24 Jun
4-6 wk
20 May
22 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Apr
11 Jul
3-4 wk
20 May
1 Aug
0 wk
13 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Apr
24 Jun
4-6 wk
20 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Apr
3 Jun
2-4 wk
8 May
17 Jun
2 wk before
8 May
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
17 Jun
1 wk before
13 May
7 Jun
1 wk before
Spinach
Spinacia oleracea
22 – 29 Apr
26 Jul
3-4 wk
20 May
16 Aug
0 wk
2 May
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
10 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Apr
6 May
6-8 wk
2 Jun
17 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
25 Jun
28 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
24 Jun
4-6 wk
20 May
22 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Apr
26 Jun
3-4 wk
20 May
17 Jul
0 wk
13 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
10 – 24 May
31 May
4-6 wk
21 Jun
28 Jun
5 wk after
Lemon balm
Melissa officinalis
11 – 25 Mar
22 May
8-10 wk
20 May
17 Jul
0 wk
10 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
13 May
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
25 Mar – 8 Apr
5 Jun
6-8 wk
20 May
17 Jul
0 wk
13 May
7 Jul
1 wk before
Spearmint
Mentha spicata
25 Feb – 25 Mar
22 May
8-12 wk
20 May
17 Jul
0 wk
10 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
20 May
16 Aug
0 wk
30 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
13 – 27 Mar
7 May
8-10 wk
22 May
2 Jul
0 wk
Common thyme
Thymus vulgaris
11 – 25 Mar
12 May
8-10 wk
20 May
7 Jul
0 wk
Oregano
Origanum vulgare
25 Mar – 8 Apr
26 May
6-8 wk
20 May
7 Jul
0 wk
10 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
25 Mar – 8 Apr
26 May
6-8 wk
20 May
7 Jul
0 wk
13 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
13 Feb – 13 Mar
8 Apr
10-14 wk
22 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
24 – 31 May
7 Jun
3-4 wk
21 Jun
28 Jun
5 wk after
Cornflower
Centaurea cyanus
20 May
17 Jul
0 wk
13 May
7 Jul
1 wk before
Statice
Limonium sinuatum
24 Mar – 7 Apr
9 May
8-10 wk
2 Jun
4 Jul
2 wk after
Sweet William
Dianthus barbatus
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
25 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
23 May
6-8 wk
2 Jun
4 Jul
2 wk after
28 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Apr
26 May
6-8 wk
31 May
7 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Apr – 13 May
9 Jun
4-8 wk
10 Jun
7 Jul
3 wk after
10 Jun
27 Jun
3 wk after
Foxglove
Digitalis purpurea
11 – 25 Mar
8-10 wk
20 May
0 wk
30 May
1 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
2 Jun
6-8 wk
2 Jun
14 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
22 Apr
8-10 wk
22 May
17 Jun
0 wk
Love in a mist
Nigella damascena
20 May
2 Jul
0 wk
13 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
13 May
6-8 wk
2 Jun
24 Jun
2 wk after
28 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
27 Feb – 27 Mar
22 Apr
8-12 wk
22 May
17 Jun
0 wk
Cardoon
Cynara cardunculus
10 Mar – 7 Apr
23 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
17 Jul
0 wk
13 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Feb – 25 Mar
12 May
8-12 wk
20 May
7 Jul
0 wk
25 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
12 – 26 Apr
19 May
8-10 wk
21 Jun
14 Jul
5 wk after
Sweet pea
Lathyrus odoratus
25 Mar – 15 Apr
2 Jun
5-8 wk
20 May
7 Jul
0 wk
Stock
Matthiola incana
25 Mar – 8 Apr
5 Jun
6-8 wk
20 May
17 Jul
0 wk
30 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
25 Mar – 8 Apr
6 May
6-8 wk
20 May
17 Jun
0 wk
30 May
7 Jun
1 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
22 May
8-10 wk
20 May
17 Jul
0 wk
25 May
7 Jul
1 wk after
Petunia
Petunia
10 Mar – 7 Apr
9 May
8-12 wk
2 Jun
4 Jul
2 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Mar – 10 Apr
6 May
6-8 wk
22 May
17 Jun
0 wk
25 Jun
5 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
9 Jun
4-6 wk
2 Jun
7 Jul
2 wk after
25 Jun
27 Jun
5 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
22 Apr
8-12 wk
20 May
17 Jun
0 wk
10 Jun
3 wk after
Yarrow
Achillea millefolium
25 Mar – 8 Apr
6 Apr
6-8 wk
20 May
0 wk
30 May
1 wk after
Safflower
Carthamus tinctorius
20 May
17 Jun
0 wk
13 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
25 Mar – 8 Apr
26 May
6-8 wk
20 May
7 Jul
0 wk
11 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
8 – 22 Apr
9 Jun
4-6 wk
20 May
7 Jul
0 wk
30 May
27 Jun
1 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
16 Jun
3-4 wk
2 Jun
7 Jul
2 wk after
10 Jun
27 Jun
3 wk after
China aster
Callistephus chinensis
7 – 21 Apr
5 Jun
6-8 wk
2 Jun
17 Jul
2 wk after
25 Jun
7 Jul
5 wk after
Annual phlox
Phlox drummondii
31 Mar – 14 Apr
2 Jun
6-8 wk
26 May
14 Jul
1 wk after
25 Jun
4 Jul
5 wk after
Hollyhock
Alcea rosea
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
30 May
1 wk after
Alpine delphinium
Delphinium elatum
25 Feb – 25 Mar
22 Apr
8-12 wk
20 May
17 Jun
0 wk
10 Jun
3 wk after
African marigold
Tagetes erecta
7 – 21 Apr
2 Jun
6-8 wk
2 Jun
14 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
27 Mar – 10 Apr
26 May
6-8 wk
22 May
7 Jul
0 wk
25 Jun
27 Jun
5 wk after
Wood sage
Salvia nemorosa
11 – 25 Mar
12 Apr
8-10 wk
20 May
7 Jun
0 wk
10 Jun
3 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
17 Jul
0 wk
13 May
7 Jul
1 wk before
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
6 May
6-8 wk
20 May
17 Jun
0 wk
30 May
7 Jun
1 wk after