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Rel. frost
Last spring frost (0°C) 20 May Frost 9 of 10 years · 20 years of data
Frost-free season 101 days 20 May – 29 Aug
Probability that frost is over

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