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Method
Rel. frost
Last spring frost (0°C) 22 May Frost 3 of 4 years · 20 years of data
Frost-free season 108 days 22 May – 7 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)
3 – 17 Apr
13 Jun
5-7 wk
22 May
18 Jul
0 wk
23 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
25 Jun
4-6 wk
22 May
23 Jul
0 wk
23 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
5 Mar – 2 Apr
9 Mar
8-12 wk
28 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
8 Jun
5-7 wk
22 May
13 Jul
0 wk
22 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
30 Apr – 7 May
23 May
3-4 wk
28 May
13 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
26 May
4-5 wk
4 Jun
23 Jun
2 wk after
16 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jun
3-4 wk
30 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
27 Feb – 27 Mar
18 Mar
8-12 wk
22 May
0 wk
28 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
26 May
0 wk
23 May
0 wk
Maize
Zea mays
Greenhouse
24 Apr – 1 May
13 May
3-4 wk
22 May
3 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
22 Jun
3-4 wk
24 May
13 Jul
0 wk
4 Jun
3 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
3 Jul
0 wk
22 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
8 Jun
5-7 wk
22 May
13 Jul
0 wk
22 May
3 Jul
0 wk
Potato
Solanum tuberosum
20 Apr – 4 May
4 May
4-6 wk
1 Jun
1 Jun
1 wk after
1 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
18 Jun
5-7 wk
22 May
23 Jul
0 wk
23 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
7 – 14 May
28 May
3-4 wk
4 Jun
18 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Apr – 3 May
12 May
3-4 wk
24 May
2 Jun
0 wk
4 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
20 Jun
4-6 wk
22 May
18 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
7 Jul
3-4 wk
22 May
28 Jul
0 wk
23 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
20 Jun
4-6 wk
22 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
16 May
2-4 wk
22 May
30 May
0 wk
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
26 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
24 Apr – 1 May
22 Jul
3-4 wk
22 May
12 Aug
0 wk
19 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
27 Mar – 10 Apr
22 Apr
6-8 wk
22 May
3 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
30 Apr – 14 May
30 May
2-4 wk
28 May
13 Jun
1 wk after
16 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
20 Jun
4-6 wk
22 May
18 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
22 Jun
3-4 wk
22 May
13 Jul
0 wk
23 May
3 Jul
0 wk

Herbs

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