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Rel. frost
Last spring frost (0°C) 16 May Frost 9 of 10 years · 20 years of data
Frost-free season 118 days 16 May – 11 Sep
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)
28 Mar – 11 Apr
18 Jun
5-7 wk
16 May
23 Jul
0 wk
9 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 Apr
30 Jun
4-6 wk
16 May
28 Jul
0 wk
9 May
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
28 Mar – 11 Apr
13 Jun
5-7 wk
16 May
18 Jul
0 wk
4 May
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
17 – 24 Apr
29 May
4-5 wk
22 May
26 Jun
1 wk after
26 May
16 Jun
1 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
21 Feb – 21 Mar
8 Mar
8-12 wk
16 May
0 wk
15 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
28 Apr
23 May
3 wk before
28 Apr
13 May
3 wk before
Maize
Zea mays
Season too short
18 – 25 Apr
3-4 wk
16 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
21 Jun
3-4 wk
18 May
12 Jul
0 wk
26 May
2 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 May
26 Jun
0 wk
4 May
16 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
28 Mar – 11 Apr
13 Jun
5-7 wk
16 May
18 Jul
0 wk
4 May
8 Jul
2 wk before
Potato
Solanum tuberosum
Fleece
28 Mar – 11 Apr
7 May
4-6 wk
9 May
4 Jun
1 wk before
9 May
25 May
1 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Mar – 11 Apr
11 Jun
5-7 wk
16 May
16 Jul
0 wk
9 May
6 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
18 – 25 Apr
25 Apr
3-4 wk
16 May
16 May
0 wk
15 May
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 Apr
25 Jun
4-6 wk
16 May
23 Jul
0 wk
Lettuce
Lactuca sativa
18 – 25 Apr
30 Jun
3-4 wk
16 May
21 Jul
0 wk
9 May
11 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 Apr
25 Jun
4-6 wk
16 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Apr
6 May
2-4 wk
4 May
20 May
2 wk before
4 May
10 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
28 Apr
23 May
3 wk before
28 Apr
13 May
3 wk before
Spinach
Spinacia oleracea
18 – 25 Apr
27 Jul
3-4 wk
16 May
17 Aug
0 wk
28 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
12 – 26 Jun
4-6 wk
24 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
18 Apr – 2 May
2-4 wk
16 May
0 wk
26 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 Apr
25 Jun
4-6 wk
16 May
23 Jul
0 wk
Garden pea
Pisum sativum
18 – 25 Apr
15 Jun
3-4 wk
16 May
6 Jul
0 wk
9 May
26 Jun
1 wk before

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
10 – 24 Apr
4-6 wk
22 May
1 wk after
Lemon balm
Melissa officinalis
7 – 21 Mar
11 May
8-10 wk
16 May
6 Jul
0 wk
6 Jun
26 Jun
3 wk after
Dill
Anethum graveolens
9 May
12 Jul
1 wk before
Wild chives
Allium schoenoprasum
21 Mar – 4 Apr
6 Jun
6-8 wk
16 May
18 Jul
0 wk
9 May
8 Jul
1 wk before
Spearmint
Mentha spicata
21 Feb – 21 Mar
23 May
8-12 wk
16 May
18 Jul
0 wk
6 Jun
8 Jul
3 wk after
Coriander
Coriandrum sativum
16 May
1 Aug
0 wk
26 May
22 Jul
1 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
8 May
8-10 wk
18 May
3 Jul
0 wk
Common thyme
Thymus vulgaris
7 – 21 Mar
13 May
8-10 wk
16 May
8 Jul
0 wk
Oregano
Origanum vulgare
21 Mar – 4 Apr
27 May
6-8 wk
16 May
8 Jul
0 wk
6 Jun
28 Jun
3 wk after
Parsley
Petroselinum crispum
21 Mar – 4 Apr
27 May
6-8 wk
16 May
8 Jul
0 wk
9 May
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
Fleece
7 Feb – 7 Mar
28 Mar
10-14 wk
16 May
6 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
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Cornflower
Centaurea cyanus
16 May
18 Jul
0 wk
9 May
8 Jul
1 wk before
Statice
Limonium sinuatum
Season too short
7 – 21 Mar
8-10 wk
16 May
0 wk
Sweet William
Dianthus barbatus
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
21 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
13 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
21 Mar – 4 Apr
24 Apr
6-8 wk
16 May
5 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
20 Mar – 17 Apr
8 May
4-8 wk
15 May
5 Jun
0 wk
15 May
26 May
0 wk
Foxglove
Digitalis purpurea
7 – 21 Mar
8-10 wk
16 May
0 wk
26 May
1 wk after
Busy lizzie
Impatiens walleriana
Season too short
27 Feb – 27 Mar
28 Mar
8-12 wk
22 May
23 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
17 Apr – 1 May
4-6 wk
29 May
2 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
7 Apr
8-10 wk
18 May
2 Jun
0 wk
Love in a mist
Nigella damascena
16 May
21 Jun
0 wk
9 May
11 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
13 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
7 Apr
8-12 wk
18 May
2 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
21 Feb – 21 Mar
24 Mar
8-12 wk
16 May
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
27 Mar – 10 Apr
6-8 wk
22 May
1 wk after
Corn poppy
Papaver rhoeas
16 May
6 Jul
0 wk
9 May
26 Jun
1 wk before
Snapdragon
Antirrhinum majus
21 Feb – 21 Mar
1 May
8-12 wk
16 May
26 Jun
0 wk
21 May
16 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
13 – 27 Mar
8-10 wk
22 May
1 wk after
Sweet pea
Lathyrus odoratus
21 Mar – 11 Apr
3 Jun
5-8 wk
16 May
8 Jul
0 wk
Stock
Matthiola incana
21 Mar – 4 Apr
25 May
6-8 wk
16 May
6 Jul
0 wk
26 May
26 Jun
1 wk after
Wormwood
Artemisia absinthium
21 Mar – 4 Apr
7 May
6-8 wk
16 May
18 Jun
0 wk
26 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
10 – 24 Apr
4-6 wk
22 May
1 wk after
Garden pansy
Viola × wittrockiana
7 – 21 Mar
23 May
8-10 wk
16 May
18 Jul
0 wk
21 May
8 Jul
1 wk after
Petunia
Petunia
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
21 Apr
6-8 wk
18 May
2 Jun
0 wk
21 Jun
5 wk after
Common zinnia
Zinnia elegans
Season too short
4 – 18 Apr
4-6 wk
16 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
17 Apr – 1 May
3-5 wk
22 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
4 – 18 Apr
8 May
4-6 wk
16 May
5 Jun
0 wk
26 May
26 May
1 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
2 wk after
Bee balm
Monarda didyma
21 Feb – 21 Mar
11 Apr
8-12 wk
16 May
6 Jun
0 wk
6 Jun
3 wk after
Yarrow
Achillea millefolium
21 Mar – 4 Apr
7 Apr
6-8 wk
16 May
19 May
0 wk
26 May
1 wk after
Safflower
Carthamus tinctorius
16 May
18 Jun
0 wk
9 May
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
21 Mar – 4 Apr
27 May
6-8 wk
16 May
8 Jul
0 wk
7 Apr
28 Jun
6 wk before
Bishop's flower
Ammi majus
4 – 18 Apr
29 May
4-6 wk
16 May
26 Jun
0 wk
26 May
16 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
27 Feb – 13 Mar
10-12 wk
22 May
1 wk after
Sunflower
Helianthus annuus
Fleece
24 Apr – 1 May
5 Jun
3-4 wk
22 May
26 Jun
1 wk after
26 May
16 Jun
1 wk after
China aster
Callistephus chinensis
Fleece
27 Mar – 10 Apr
25 May
6-8 wk
22 May
6 Jul
1 wk after
6 Jun
26 Jun
3 wk after
Annual phlox
Phlox drummondii
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
26 May
1 wk after
Hollyhock
Alcea rosea
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
26 May
1 wk after
Alpine delphinium
Delphinium elatum
21 Feb – 21 Mar
11 Apr
8-12 wk
16 May
6 Jun
0 wk
6 Jun
3 wk after
African marigold
Tagetes erecta
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
1 May
6-8 wk
18 May
12 Jun
0 wk
21 Jun
5 wk after
Wood sage
Salvia nemorosa
7 – 21 Mar
1 Apr
8-10 wk
16 May
27 May
0 wk
6 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
13 Mar – 10 Apr
6-10 wk
22 May
1 wk after
California goldenpoppy
Eschscholzia californica
16 May
6 Jul
0 wk
9 May
26 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
13 – 27 Mar
27 Apr
8-10 wk
22 May
22 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
21 Mar – 4 Apr
7 May
6-8 wk
16 May
18 Jun
0 wk
26 May
8 Jun
1 wk after