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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 3 of 4 years · 20 years of data
Frost-free season 119 days 19 May – 15 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)
31 Mar – 14 Apr
15 Jun
5-7 wk
19 May
20 Jul
0 wk
23 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
27 Jun
4-6 wk
19 May
25 Jul
0 wk
23 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
2 – 30 Mar
28 Mar
8-12 wk
25 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
10 Jun
5-7 wk
19 May
15 Jul
0 wk
19 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
4 – 11 May
22 May
3-4 wk
1 Jun
12 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
18 May
4-5 wk
20 Jun
5 wk after
7 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
24 Feb – 24 Mar
17 Mar
8-12 wk
19 May
0 wk
9 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
1 Jun
1 wk after
23 May
1 wk after
Maize
Zea mays
Fleece
27 Apr – 4 May
12 May
3-4 wk
25 May
2 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
22 Jun
3-4 wk
21 May
13 Jul
0 wk
9 Jun
3 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
5 Jul
0 wk
19 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
10 Jun
5-7 wk
19 May
15 Jul
0 wk
19 May
5 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
16 May
4-6 wk
4 Jun
13 Jun
2 wk after
4 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
20 Jun
5-7 wk
19 May
25 Jul
0 wk
23 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
23 – 30 May
27 May
3-4 wk
20 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
21 May
3-4 wk
21 May
11 Jun
0 wk
9 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
22 Jun
4-6 wk
19 May
20 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
9 Jul
3-4 wk
19 May
30 Jul
0 wk
23 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
22 Jun
4-6 wk
19 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
22 May
2-4 wk
19 May
5 Jun
0 wk
19 May
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
1 Jun
1 wk after
23 May
1 wk after
Spinach
Spinacia oleracea
21 – 28 Apr
24 Jul
3-4 wk
19 May
14 Aug
0 wk
15 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
30 Mar – 13 Apr
21 Apr
6-8 wk
25 May
2 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 May
29 May
2-4 wk
1 Jun
12 Jun
2 wk after
7 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
22 Jun
4-6 wk
19 May
20 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
24 Jun
3-4 wk
19 May
15 Jul
0 wk
23 May
5 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
20 Apr – 4 May
21 May
4-6 wk
1 Jun
18 Jun
2 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
20 May
8-10 wk
19 May
15 Jul
0 wk
23 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
23 May
13 Jul
1 wk after
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
3 Jun
6-8 wk
19 May
15 Jul
0 wk
23 May
5 Jul
1 wk after
Spearmint
Mentha spicata
24 Feb – 24 Mar
20 May
8-12 wk
19 May
15 Jul
0 wk
23 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
19 May
2 Aug
0 wk
9 Jun
23 Jul
3 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
5 May
8-10 wk
21 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
10 – 24 Mar
10 May
8-10 wk
19 May
5 Jul
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
23 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
23 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
12 Feb – 12 Mar
19 Mar
10-14 wk
21 May
28 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
4 – 11 May
28 May
3-4 wk
1 Jun
18 Jun
2 wk after
Cornflower
Centaurea cyanus
19 May
15 Jul
0 wk
23 May
5 Jul
1 wk after
Statice
Limonium sinuatum
23 Mar – 6 Apr
17 Apr
8-10 wk
1 Jun
12 Jun
2 wk after
Sweet William
Dianthus barbatus
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
4 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
1 May
6-8 wk
1 Jun
12 Jun
2 wk after
1 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
4 – 18 Apr
6 May
6-8 wk
30 May
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
28 Apr – 26 May
20 May
4-8 wk
23 Jun
5 wk after
23 Jun
5 wk after
Foxglove
Digitalis purpurea
10 – 24 Mar
8-10 wk
19 May
0 wk
9 Jun
3 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
8 Jun
8-12 wk
20 Jun
3 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
11 May
6-8 wk
1 Jun
22 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
21 Apr
4-6 wk
1 Jun
2 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
8 Apr
8-10 wk
21 May
3 Jun
0 wk
Love in a mist
Nigella damascena
19 May
30 Jun
0 wk
23 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
1 wk after
17 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
8 Apr
8-12 wk
21 May
3 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
2 – 30 Mar
21 Mar
8-12 wk
25 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
9 Mar – 6 Apr
13 Apr
8-12 wk
1 Jun
8 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
6 – 20 Apr
27 Apr
6-8 wk
1 Jun
8 Jun
2 wk after
Corn poppy
Papaver rhoeas
19 May
15 Jul
0 wk
23 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
24 Feb – 24 Mar
10 May
8-12 wk
19 May
5 Jul
0 wk
4 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
11 – 25 Apr
27 Apr
8-10 wk
20 Jun
22 Jun
5 wk after
Sweet pea
Lathyrus odoratus
24 Mar – 14 Apr
31 May
5-8 wk
19 May
5 Jul
0 wk
Stock
Matthiola incana
24 Mar – 7 Apr
3 Jun
6-8 wk
19 May
15 Jul
0 wk
9 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
24 Mar – 7 Apr
4 May
6-8 wk
19 May
15 Jun
0 wk
9 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
13 – 27 Apr
15 May
4-6 wk
25 May
12 Jun
1 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Mar
20 May
8-10 wk
19 May
15 Jul
0 wk
4 Jun
5 Jul
2 wk after
Petunia
Petunia
9 Mar – 6 Apr
17 Apr
8-12 wk
1 Jun
12 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
22 Apr
6-8 wk
21 May
3 Jun
0 wk
7 Jul
7 wk after
Common zinnia
Zinnia elegans
20 Apr – 4 May
21 May
4-6 wk
1 Jun
18 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
27 Apr – 11 May
28 May
3-5 wk
1 Jun
18 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
20 Apr – 4 May
20 May
4-6 wk
1 Jun
17 Jun
2 wk after
7 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
28 Mar – 25 Apr
13 May
8-12 wk
20 Jun
8 Jul
5 wk after
Bee balm
Monarda didyma
24 Feb – 24 Mar
20 Apr
8-12 wk
19 May
15 Jun
0 wk
23 Jun
5 wk after
Yarrow
Achillea millefolium
24 Mar – 7 Apr
4 Apr
6-8 wk
19 May
0 wk
9 Jun
3 wk after
Safflower
Carthamus tinctorius
19 May
15 Jun
0 wk
23 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
1 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
7 – 21 Apr
7 Jun
4-6 wk
19 May
5 Jul
0 wk
9 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
27 Mar
10-12 wk
25 May
5 Jun
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
27 May
3-4 wk
1 Jun
17 Jun
2 wk after
23 Jun
5 wk after
China aster
Callistephus chinensis
6 – 20 Apr
16 May
6-8 wk
1 Jun
27 Jun
2 wk after
7 Jul
7 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
11 May
6-8 wk
25 May
22 Jun
1 wk after
7 Jul
7 wk after
Hollyhock
Alcea rosea
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
9 Jun
3 wk after
Alpine delphinium
Delphinium elatum
24 Feb – 24 Mar
20 Apr
8-12 wk
19 May
15 Jun
0 wk
23 Jun
5 wk after
African marigold
Tagetes erecta
6 – 20 Apr
11 May
6-8 wk
1 Jun
22 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
6 May
6-8 wk
21 May
17 Jun
0 wk
7 Jul
7 wk after
Wood sage
Salvia nemorosa
10 – 24 Mar
10 Apr
8-10 wk
19 May
5 Jun
0 wk
23 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
23 Mar – 20 Apr
7 May
6-10 wk
1 Jun
18 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
19 May
10 Jul
0 wk
23 May
30 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
20 Apr
8-10 wk
1 Jun
15 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
24 Mar – 7 Apr
4 May
6-8 wk
19 May
15 Jun
0 wk
9 Jun
3 wk after