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Method
Rel. frost
Last spring frost (0°C) 19 May Normal year · 20 years of data
Frost-free season 129 days 19 May – 25 Sep
Probability that frost is over

50% = 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
14 Jun
5-7 wk
19 May
19 Jul
0 wk
23 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
26 Jun
4-6 wk
19 May
24 Jul
0 wk
23 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
6 Apr
8-12 wk
3 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
9 Jun
5-7 wk
19 May
14 Jul
0 wk
19 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
18 – 25 May
31 May
3-4 wk
15 Jun
21 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
Fleece
11 – 18 May
6 Jun
4-5 wk
15 Jun
4 Jul
4 wk after
23 Jun
24 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
24 Feb – 24 Mar
23 Mar
8-12 wk
19 May
0 wk
9 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
7 Jun
1 wk after
23 May
28 May
1 wk after
Maize
Zea mays
18 – 25 May
3-4 wk
15 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
3 Jul
3-4 wk
27 May
24 Jul
1 wk after
9 Jun
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
4 Jul
0 wk
19 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
9 Jun
5-7 wk
19 May
14 Jul
0 wk
19 May
4 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
20 May
4-6 wk
4 Jun
17 Jun
2 wk after
4 Jun
7 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
19 Jun
5-7 wk
19 May
24 Jul
0 wk
23 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
18 – 25 May
20 Jun
3-4 wk
15 Jun
11 Jul
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
30 May
3-4 wk
27 May
20 Jun
1 wk after
9 Jun
10 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
21 Jun
4-6 wk
19 May
19 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
8 Jul
3-4 wk
19 May
29 Jul
0 wk
23 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
21 Jun
4-6 wk
19 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
27 May
2-4 wk
19 May
10 Jun
0 wk
19 May
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
7 Jun
1 wk after
23 May
28 May
1 wk after
Spinach
Spinacia oleracea
21 – 28 Apr
23 Jul
3-4 wk
19 May
13 Aug
0 wk
15 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
11 wk after
Garden tomato
Solanum lycopersicum
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
18 May – 1 Jun
7 Jun
2-4 wk
15 Jun
21 Jun
4 wk after
7 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
21 Jun
4-6 wk
19 May
19 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
23 Jun
3-4 wk
19 May
14 Jul
0 wk
23 May
4 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
4 – 18 May
29 May
4-6 wk
15 Jun
26 Jun
4 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
19 May
8-10 wk
19 May
14 Jul
0 wk
23 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
23 May
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
2 Jun
6-8 wk
19 May
14 Jul
0 wk
23 May
4 Jul
1 wk after
Spearmint
Mentha spicata
24 Feb – 24 Mar
19 May
8-12 wk
19 May
14 Jul
0 wk
23 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
19 May
13 Aug
0 wk
9 Jun
3 Aug
3 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
4 May
8-10 wk
27 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
10 – 24 Mar
9 May
8-10 wk
19 May
4 Jul
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
23 May
6-8 wk
19 May
4 Jul
0 wk
23 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
23 May
6-8 wk
19 May
4 Jul
0 wk
23 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
30 Mar
10-14 wk
27 May
8 Jun
1 wk after

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