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