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