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