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Method
Rel. frost
Last spring frost (0°C) 18 May Frost 3 of 4 years · 20 years of data
Frost-free season 107 days 18 May – 2 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)
30 Mar – 13 Apr
14 Jun
5-7 wk
18 May
19 Jul
0 wk
22 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
26 Jun
4-6 wk
18 May
24 Jul
0 wk
22 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
1 – 29 Mar
31 Mar
8-12 wk
24 May
26 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
9 Jun
5-7 wk
18 May
14 Jul
0 wk
18 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
3 – 10 May
25 May
3-4 wk
31 May
15 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
17 May
4-5 wk
19 Jun
5 wk after
6 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Feb – 23 Mar
19 Mar
8-12 wk
18 May
0 wk
8 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 May
3 Jun
1 wk after
22 May
24 May
1 wk after
Maize
Zea mays
Fleece
26 Apr – 3 May
15 May
3-4 wk
24 May
5 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
22 Jun
3-4 wk
20 May
13 Jul
0 wk
8 Jun
3 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
3 Jul
0 wk
18 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
9 Jun
5-7 wk
18 May
14 Jul
0 wk
18 May
4 Jul
0 wk
Potato
Solanum tuberosum
22 Apr – 6 May
17 May
4-6 wk
3 Jun
14 Jun
2 wk after
3 Jun
4 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
18 Jun
5-7 wk
18 May
23 Jul
0 wk
22 May
13 Jul
1 wk after
Pumpkin
Cucurbita pepo
22 – 29 May
30 May
3-4 wk
19 Jun
20 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
23 May
3-4 wk
20 May
13 Jun
0 wk
8 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
21 Jun
4-6 wk
18 May
19 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
7 Jul
3-4 wk
18 May
28 Jul
0 wk
22 May
18 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
21 Jun
4-6 wk
18 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Apr – 4 May
22 May
2-4 wk
18 May
5 Jun
0 wk
18 May
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 May
3 Jun
1 wk after
22 May
24 May
1 wk after
Spinach
Spinacia oleracea
20 – 27 Apr
23 Jul
3-4 wk
18 May
13 Aug
0 wk
14 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
29 Mar – 12 Apr
24 Apr
6-8 wk
24 May
5 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
1 Jun
2-4 wk
31 May
15 Jun
2 wk after
6 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
21 Jun
4-6 wk
18 May
19 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
22 Jun
3-4 wk
18 May
13 Jul
0 wk
22 May
3 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
19 Apr – 3 May
22 May
4-6 wk
31 May
19 Jun
2 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
18 May
8-10 wk
18 May
13 Jul
0 wk
22 Jun
3 Jul
5 wk after
Dill
Anethum graveolens
22 May
13 Jul
1 wk after
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
2 Jun
6-8 wk
18 May
14 Jul
0 wk
22 May
4 Jul
1 wk after
Spearmint
Mentha spicata
23 Feb – 23 Mar
19 May
8-12 wk
18 May
14 Jul
0 wk
22 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
18 May
2 Aug
0 wk
8 Jun
23 Jul
3 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
4 May
8-10 wk
20 May
29 Jun
0 wk
Common thyme
Thymus vulgaris
9 – 23 Mar
9 May
8-10 wk
18 May
4 Jul
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
23 May
6-8 wk
18 May
4 Jul
0 wk
22 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
23 May
6-8 wk
18 May
4 Jul
0 wk
22 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
18 Mar
10-14 wk
20 May
27 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
Fleece
3 – 10 May
29 May
3-4 wk
31 May
19 Jun
2 wk after
Cornflower
Centaurea cyanus
18 May
14 Jul
0 wk
22 May
4 Jul
1 wk after
Statice
Limonium sinuatum
22 Mar – 5 Apr
18 Apr
8-10 wk
31 May
13 Jun
2 wk after
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
3 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
2 May
6-8 wk
31 May
13 Jun
2 wk after
31 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Apr
6 May
6-8 wk
29 May
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
27 Apr – 25 May
20 May
4-8 wk
22 Jun
5 wk after
22 Jun
5 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
8 Jun
3 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
9 Jun
8-12 wk
19 Jun
4 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
12 May
6-8 wk
31 May
23 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
22 Apr
4-6 wk
31 May
2 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
8 Apr
8-10 wk
20 May
3 Jun
0 wk
Love in a mist
Nigella damascena
18 May
28 Jun
0 wk
22 May
18 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
29 Mar – 12 Apr
2 May
6-8 wk
24 May
13 Jun
1 wk after
16 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
8 Apr
8-12 wk
20 May
3 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
23 Feb – 23 Mar
20 Mar
8-12 wk
18 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
8 Mar – 5 Apr
14 Apr
8-12 wk
31 May
9 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
5 – 19 Apr
28 Apr
6-8 wk
31 May
9 Jun
2 wk after
Corn poppy
Papaver rhoeas
18 May
13 Jul
0 wk
22 May
3 Jul
1 wk after
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
8 May
8-12 wk
18 May
3 Jul
0 wk
3 Jun
23 Jun
2 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
28 Apr
8-10 wk
19 Jun
23 Jun
5 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
30 May
5-8 wk
18 May
4 Jul
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
1 Jun
6-8 wk
18 May
13 Jul
0 wk
8 Jun
3 Jul
3 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
3 May
6-8 wk
18 May
14 Jun
0 wk
8 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
12 – 26 Apr
15 May
4-6 wk
24 May
12 Jun
1 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Mar
19 May
8-10 wk
18 May
14 Jul
0 wk
3 Jun
4 Jul
2 wk after
Petunia
Petunia
8 Mar – 5 Apr
18 Apr
8-12 wk
31 May
13 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
22 Apr
6-8 wk
20 May
3 Jun
0 wk
6 Jul
7 wk after
Common zinnia
Zinnia elegans
19 Apr – 3 May
22 May
4-6 wk
31 May
19 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
26 Apr – 10 May
29 May
3-5 wk
31 May
19 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
19 Apr – 3 May
20 May
4-6 wk
31 May
17 Jun
2 wk after
6 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
27 Mar – 24 Apr
14 May
8-12 wk
19 Jun
9 Jul
5 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
18 Apr
8-12 wk
18 May
13 Jun
0 wk
22 Jun
5 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
3 Apr
6-8 wk
18 May
0 wk
8 Jun
3 wk after
Safflower
Carthamus tinctorius
18 May
14 Jun
0 wk
22 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
23 May
6-8 wk
18 May
4 Jul
0 wk
30 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
5 Jun
4-6 wk
18 May
3 Jul
0 wk
8 Jun
23 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
1 – 15 Mar
27 Mar
10-12 wk
24 May
5 Jun
1 wk after
Sunflower
Helianthus annuus
3 – 10 May
26 May
3-4 wk
31 May
16 Jun
2 wk after
22 Jun
5 wk after
China aster
Callistephus chinensis
5 – 19 Apr
15 May
6-8 wk
31 May
26 Jun
2 wk after
6 Jul
7 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
12 May
6-8 wk
24 May
23 Jun
1 wk after
6 Jul
7 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
8 Jun
3 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
18 Apr
8-12 wk
18 May
13 Jun
0 wk
22 Jun
5 wk after
African marigold
Tagetes erecta
5 – 19 Apr
12 May
6-8 wk
31 May
23 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
5 May
6-8 wk
20 May
16 Jun
0 wk
6 Jul
7 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
8 Apr
8-10 wk
18 May
3 Jun
0 wk
22 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
22 Mar – 19 Apr
8 May
6-10 wk
31 May
19 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
18 May
9 Jul
0 wk
22 May
29 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
19 Apr
8-10 wk
31 May
14 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
3 May
6-8 wk
18 May
14 Jun
0 wk
8 Jun
3 wk after