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Method
Rel. frost
Last spring frost (0°C) 26 May Frost 3 of 4 years · 20 years of data
Frost-free season 97 days 26 May – 31 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)
7 – 21 Apr
11 Jun
5-7 wk
26 May
16 Jul
0 wk
27 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
23 Jun
4-6 wk
26 May
21 Jul
0 wk
27 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
9 Mar – 6 Apr
22 Mar
8-12 wk
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Apr
6 Jun
5-7 wk
26 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
4 – 11 May
24 May
3-4 wk
1 Jun
14 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
4 – 11 May
26 May
4-5 wk
8 Jun
23 Jun
2 wk after
20 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
3 – 31 Mar
19 Mar
8-12 wk
26 May
0 wk
26 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
23 May
27 May
0 wk
23 May
0 wk
Maize
Zea mays
Greenhouse
28 Apr – 5 May
14 May
3-4 wk
26 May
4 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
22 Jun
3-4 wk
28 May
13 Jul
0 wk
8 Jun
3 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 May
29 Jun
0 wk
26 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Apr
6 Jun
5-7 wk
26 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Potato
Solanum tuberosum
Fleece
15 – 29 Apr
10 May
4-6 wk
27 May
7 Jun
0 wk
27 May
28 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Apr
14 Jun
5-7 wk
26 May
19 Jul
0 wk
27 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
11 – 18 May
29 May
3-4 wk
8 Jun
19 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
28 Apr – 5 May
16 May
3-4 wk
26 May
6 Jun
0 wk
1 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
18 Jun
4-6 wk
26 May
16 Jul
0 wk
Lettuce
Lactuca sativa
28 Apr – 5 May
3 Jul
3-4 wk
26 May
24 Jul
0 wk
27 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Apr
18 Jun
4-6 wk
26 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Apr – 12 May
9 May
2-4 wk
26 May
0 wk
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
23 May
27 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
28 Apr – 5 May
20 Jul
3-4 wk
26 May
10 Aug
0 wk
23 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
31 Mar – 14 Apr
23 Apr
6-8 wk
26 May
4 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
4 – 18 May
31 May
2-4 wk
1 Jun
14 Jun
1 wk after
20 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
18 Jun
4-6 wk
26 May
16 Jul
0 wk
Garden pea
Pisum sativum
28 Apr – 5 May
18 Jun
3-4 wk
26 May
9 Jul
0 wk
27 May
29 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
20 Apr – 4 May
25 May
4-6 wk
1 Jun
22 Jun
1 wk after
Lemon balm
Melissa officinalis
17 – 31 Mar
14 May
8-10 wk
26 May
9 Jul
0 wk
20 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
27 May
13 Jul
0 wk
Wild chives
Allium schoenoprasum
31 Mar – 14 Apr
30 May
6-8 wk
26 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Spearmint
Mentha spicata
3 – 31 Mar
16 May
8-12 wk
26 May
11 Jul
0 wk
20 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
26 May
2 Aug
0 wk
8 Jun
23 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
1 May
8-10 wk
28 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
17 – 31 Mar
6 May
8-10 wk
26 May
1 Jul
0 wk
Oregano
Origanum vulgare
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
0 wk
20 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
0 wk
27 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
17 Feb – 17 Mar
27 Mar
10-14 wk
26 May
5 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
4 – 11 May
1 Jun
3-4 wk
1 Jun
22 Jun
1 wk after
Cornflower
Centaurea cyanus
26 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Statice
Limonium sinuatum
Fleece
23 Mar – 6 Apr
20 Apr
8-10 wk
1 Jun
15 Jun
1 wk after
Sweet William
Dianthus barbatus
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
6 – 20 Apr
4 May
6-8 wk
1 Jun
15 Jun
1 wk after
15 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
1 May
6-8 wk
6 Jun
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
13 Apr – 11 May
26 May
4-8 wk
8 Jun
23 Jun
2 wk after
8 Jun
13 Jun
2 wk after
Foxglove
Digitalis purpurea
17 – 31 Mar
8-10 wk
26 May
0 wk
8 Jun
2 wk after
Busy lizzie
Impatiens walleriana
4 Apr – 2 May
25 May
8-12 wk
27 Jun
20 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Apr
7 May
6-8 wk
8 Jun
18 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
8 Apr
8-10 wk
28 May
3 Jun
0 wk
Love in a mist
Nigella damascena
26 May
24 Jun
0 wk
27 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
6 – 20 Apr
24 Apr
6-8 wk
1 Jun
5 Jun
1 wk after
15 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
5 Mar – 2 Apr
8 Apr
8-12 wk
28 May
3 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
3 – 31 Mar
17 Mar
8-12 wk
26 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
9 Mar – 6 Apr
17 Apr
8-12 wk
1 Jun
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
6 – 20 Apr
1 May
6-8 wk
1 Jun
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
26 May
9 Jul
0 wk
27 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
3 – 31 Mar
4 May
8-12 wk
26 May
29 Jun
0 wk
5 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
18 Apr – 2 May
23 Apr
8-10 wk
27 Jun
5 wk after
Sweet pea
Lathyrus odoratus
31 Mar – 21 Apr
27 May
5-8 wk
26 May
1 Jul
0 wk
Stock
Matthiola incana
31 Mar – 14 Apr
28 May
6-8 wk
26 May
9 Jul
0 wk
8 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
31 Mar – 14 Apr
30 Apr
6-8 wk
26 May
11 Jun
0 wk
8 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
20 Apr – 4 May
10 May
4-6 wk
1 Jun
7 Jun
1 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Mar
16 May
8-10 wk
26 May
11 Jul
0 wk
5 Jun
1 Jul
1 wk after
Petunia
Petunia
Fleece
9 Mar – 6 Apr
20 Apr
8-12 wk
1 Jun
15 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Apr
22 Apr
6-8 wk
28 May
3 Jun
0 wk
8 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
20 Apr – 4 May
25 May
4-6 wk
1 Jun
22 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
27 Apr – 11 May
1 Jun
3-5 wk
1 Jun
22 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
27 Apr – 11 May
15 May
4-6 wk
8 Jun
12 Jun
2 wk after
8 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
4 Apr – 2 May
29 Apr
8-12 wk
27 Jun
5 wk after
Bee balm
Monarda didyma
3 – 31 Mar
14 Apr
8-12 wk
26 May
9 Jun
0 wk
20 Jun
4 wk after
Yarrow
Achillea millefolium
31 Mar – 14 Apr
31 Mar
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Safflower
Carthamus tinctorius
26 May
11 Jun
0 wk
27 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
0 wk
10 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
14 – 28 Apr
1 Jun
4-6 wk
26 May
29 Jun
0 wk
8 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
9 – 23 Mar
25 Mar
10-12 wk
1 Jun
3 Jun
1 wk after
Sunflower
Helianthus annuus
11 – 18 May
25 May
3-4 wk
8 Jun
15 Jun
2 wk after
20 Jun
4 wk after
China aster
Callistephus chinensis
13 – 27 Apr
14 May
6-8 wk
8 Jun
25 Jun
2 wk after
8 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
7 May
6-8 wk
1 Jun
18 Jun
1 wk after
8 Jul
6 wk after
Hollyhock
Alcea rosea
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Mar
14 Apr
8-12 wk
26 May
9 Jun
0 wk
20 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Apr
7 May
6-8 wk
8 Jun
18 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
0 wk
8 Jul
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
4 Apr
8-10 wk
26 May
30 May
0 wk
20 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
23 Mar – 20 Apr
11 May
6-10 wk
1 Jun
22 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
26 May
5 Jul
0 wk
27 May
25 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
23 Mar – 6 Apr
28 Apr
8-10 wk
1 Jun
23 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
31 Mar – 14 Apr
30 Apr
6-8 wk
26 May
11 Jun
0 wk
8 Jun
2 wk after