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