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Method
Rel. frost
Last spring frost (0°C) 29 May Frost 3 of 4 years · 20 years of data
Frost-free season 87 days 29 May – 24 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)
10 – 24 Apr
11 Jun
5-7 wk
29 May
16 Jul
0 wk
30 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
17 Apr – 1 May
23 Jun
4-6 wk
29 May
21 Jul
0 wk
30 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Apr
6 Jun
5-7 wk
29 May
11 Jul
0 wk
29 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
7 – 14 May
22 May
3-4 wk
4 Jun
12 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
7 – 14 May
14 May
4-5 wk
11 Jun
11 Jun
2 wk after
23 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
6 Mar – 3 Apr
23 Mar
8-12 wk
29 May
0 wk
29 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
30 May
0 wk
30 May
0 wk
Maize
Zea mays
Greenhouse
1 – 8 May
12 May
3-4 wk
29 May
2 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
10 Jun
3-4 wk
31 May
1 Jul
0 wk
11 Jun
21 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 May
27 Jun
0 wk
29 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Apr
6 Jun
5-7 wk
29 May
11 Jul
0 wk
29 May
1 Jul
0 wk
Potato
Solanum tuberosum
27 Apr – 11 May
28 Apr
4-6 wk
8 Jun
1 wk after
8 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Apr
12 Jun
5-7 wk
29 May
17 Jul
0 wk
30 May
7 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
14 – 21 May
27 May
3-4 wk
11 Jun
17 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
1 – 8 May
17 May
3-4 wk
29 May
7 Jun
0 wk
4 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 Apr – 1 May
18 Jun
4-6 wk
29 May
16 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 May
1 Jul
3-4 wk
29 May
22 Jul
0 wk
30 May
12 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Apr – 1 May
18 Jun
4-6 wk
29 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 May
10 May
2-4 wk
29 May
0 wk
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 May
0 wk
30 May
0 wk
Spinach
Spinacia oleracea
1 – 8 May
18 Jul
3-4 wk
29 May
8 Aug
0 wk
26 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
23 Jun – 7 Jul
4-6 wk
4 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
3 – 17 Apr
21 Apr
6-8 wk
29 May
2 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
7 – 21 May
29 May
2-4 wk
4 Jun
12 Jun
1 wk after
23 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 Apr – 1 May
18 Jun
4-6 wk
29 May
16 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 May
16 Jun
3-4 wk
29 May
7 Jul
0 wk
30 May
27 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
23 Apr – 7 May
21 May
4-6 wk
4 Jun
18 Jun
1 wk after
Lemon balm
Melissa officinalis
20 Mar – 3 Apr
12 May
8-10 wk
29 May
7 Jul
0 wk
23 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
30 May
1 Jul
0 wk
Wild chives
Allium schoenoprasum
3 – 17 Apr
30 May
6-8 wk
29 May
11 Jul
0 wk
30 May
1 Jul
0 wk
Spearmint
Mentha spicata
6 Mar – 3 Apr
16 May
8-12 wk
29 May
11 Jul
0 wk
23 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
29 May
21 Jul
0 wk
11 Jun
11 Jul
2 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
1 May
8-10 wk
31 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
20 Mar – 3 Apr
6 May
8-10 wk
29 May
1 Jul
0 wk
Oregano
Origanum vulgare
3 – 17 Apr
20 May
6-8 wk
29 May
1 Jul
0 wk
23 Jun
4 wk after
Parsley
Petroselinum crispum
3 – 17 Apr
20 May
6-8 wk
29 May
1 Jul
0 wk
30 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
20 Feb – 20 Mar
24 Mar
10-14 wk
29 May
2 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
7 – 14 May
28 May
3-4 wk
4 Jun
18 Jun
1 wk after
Cornflower
Centaurea cyanus
29 May
11 Jul
0 wk
30 May
1 Jul
0 wk
Statice
Limonium sinuatum
Fleece
26 Mar – 9 Apr
17 Apr
8-10 wk
4 Jun
12 Jun
1 wk after
Sweet William
Dianthus barbatus
3 – 17 Apr
6-8 wk
29 May
0 wk
8 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
9 – 23 Apr
1 May
6-8 wk
4 Jun
12 Jun
1 wk after
18 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Apr
27 Apr
6-8 wk
9 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
16 Apr – 14 May
23 May
4-8 wk
11 Jun
20 Jun
2 wk after
11 Jun
2 wk after
Foxglove
Digitalis purpurea
20 Mar – 3 Apr
8-10 wk
29 May
0 wk
11 Jun
2 wk after
Busy lizzie
Impatiens walleriana
7 Apr – 5 May
23 May
8-12 wk
30 Jun
18 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
29 Apr
6-8 wk
11 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
30 Apr – 14 May
4-6 wk
11 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
20 Mar – 3 Apr
12 Apr
8-10 wk
29 May
7 Jun
0 wk
Love in a mist
Nigella damascena
29 May
22 Jun
0 wk
30 May
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
9 – 23 Apr
21 Apr
6-8 wk
4 Jun
1 wk after
18 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
Fleece
6 Mar – 3 Apr
12 Apr
8-12 wk
29 May
7 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
6 Mar – 3 Apr
15 Mar
8-12 wk
29 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
12 Mar – 9 Apr
13 Apr
8-12 wk
4 Jun
8 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
9 – 23 Apr
27 Apr
6-8 wk
4 Jun
8 Jun
1 wk after
Corn poppy
Papaver rhoeas
29 May
7 Jul
0 wk
30 May
27 Jun
0 wk
Snapdragon
Antirrhinum majus
6 Mar – 3 Apr
2 May
8-12 wk
29 May
27 Jun
0 wk
8 Jun
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
2 – 16 Apr
27 Apr
8-10 wk
11 Jun
22 Jun
2 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Apr
27 May
5-8 wk
29 May
1 Jul
0 wk
Stock
Matthiola incana
3 – 17 Apr
26 May
6-8 wk
29 May
7 Jul
0 wk
11 Jun
27 Jun
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Apr
30 Apr
6-8 wk
29 May
11 Jun
0 wk
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
23 Apr – 7 May
6 May
4-6 wk
4 Jun
1 wk after
Garden pansy
Viola × wittrockiana
20 Mar – 3 Apr
16 May
8-10 wk
29 May
11 Jul
0 wk
8 Jun
1 Jul
1 wk after
Petunia
Petunia
Fleece
12 Mar – 9 Apr
17 Apr
8-12 wk
4 Jun
12 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
Fleece
3 – 17 Apr
26 Apr
6-8 wk
29 May
7 Jun
0 wk
23 Jun
4 wk after
Common zinnia
Zinnia elegans
Fleece
23 Apr – 7 May
21 May
4-6 wk
4 Jun
18 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
30 Apr – 14 May
28 May
3-5 wk
4 Jun
18 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
23 Apr – 7 May
23 May
4-6 wk
4 Jun
20 Jun
1 wk after
23 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
19 Mar – 16 Apr
13 May
8-12 wk
11 Jun
8 Jul
2 wk after
Bee balm
Monarda didyma
6 Mar – 3 Apr
12 Apr
8-12 wk
29 May
7 Jun
0 wk
23 Jun
4 wk after
Yarrow
Achillea millefolium
3 – 17 Apr
6-8 wk
29 May
0 wk
11 Jun
2 wk after
Safflower
Carthamus tinctorius
29 May
9 Jun
0 wk
30 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Apr
20 May
6-8 wk
29 May
1 Jul
0 wk
13 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
17 Apr – 1 May
30 May
4-6 wk
29 May
27 Jun
0 wk
11 Jun
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
12 – 26 Mar
22 Mar
10-12 wk
4 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
7 – 14 May
1 Jun
3-4 wk
4 Jun
22 Jun
1 wk after
11 Jun
12 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
9 – 23 Apr
21 May
6-8 wk
4 Jun
2 Jul
1 wk after
23 Jun
4 wk after
Annual phlox
Phlox drummondii
9 – 23 Apr
29 Apr
6-8 wk
4 Jun
10 Jun
1 wk after
11 Jul
6 wk after
Hollyhock
Alcea rosea
3 – 17 Apr
6-8 wk
29 May
0 wk
11 Jun
2 wk after
Alpine delphinium
Delphinium elatum
6 Mar – 3 Apr
12 Apr
8-12 wk
29 May
7 Jun
0 wk
23 Jun
4 wk after
African marigold
Tagetes erecta
16 – 30 Apr
29 Apr
6-8 wk
11 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
Fleece
3 – 17 Apr
11 May
6-8 wk
29 May
22 Jun
0 wk
23 Jun
4 wk after
Wood sage
Salvia nemorosa
20 Mar – 3 Apr
2 Apr
8-10 wk
29 May
0 wk
23 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
26 Mar – 23 Apr
7 May
6-10 wk
4 Jun
18 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
29 May
2 Jul
0 wk
30 May
22 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
26 Mar – 9 Apr
16 Apr
8-10 wk
4 Jun
11 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Apr
30 Apr
6-8 wk
29 May
11 Jun
0 wk
11 Jun
2 wk after