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Method
Rel. frost
Last spring frost (0°C) 25 May Frost 9 of 10 years · 20 years of data
Frost-free season 72 days 25 May – 5 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)
6 – 20 Apr
5 Jun
5-7 wk
25 May
10 Jul
0 wk
26 May
30 Jun
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
17 Jun
4-6 wk
25 May
15 Jul
0 wk
26 May
5 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
25 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
3 – 10 May
3-4 wk
31 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
26 Apr – 3 May
19 May
4-5 wk
31 May
16 Jun
1 wk after
7 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
5 – 12 Jun
3-4 wk
3 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
2 – 30 Mar
16 Mar
8-12 wk
25 May
0 wk
25 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
22 May
0 wk
22 May
0 wk
Maize
Zea mays
Season too short
27 Apr – 4 May
3-4 wk
25 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
24 May
3-4 wk
27 May
14 Jun
0 wk
7 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
16 Jun
0 wk
25 May
6 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
25 May
1 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
4-6 wk
4 Jun
1 wk after
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
1 Jun
5-7 wk
25 May
6 Jul
0 wk
26 May
26 Jun
0 wk
Pumpkin
Cucurbita pepo
Season too short
3 – 10 May
3-4 wk
31 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
27 Apr – 4 May
11 May
3-4 wk
25 May
1 Jun
0 wk
31 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
20 Jun
3-4 wk
25 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
4 May
2-4 wk
25 May
0 wk
25 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
22 May
0 wk
22 May
0 wk
Spinach
Spinacia oleracea
27 Apr – 4 May
11 Jul
3-4 wk
25 May
1 Aug
0 wk
22 May
22 Jul
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
27 Apr – 11 May
2-4 wk
25 May
0 wk
7 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
5 Jun
3-4 wk
25 May
26 Jun
0 wk
26 May
16 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
1 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
1 May
8-10 wk
25 May
26 Jun
0 wk
19 Jun
4 wk after
Dill
Anethum graveolens
26 May
14 Jun
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
30 May
6-8 wk
25 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
10 May
8-12 wk
25 May
5 Jul
0 wk
19 Jun
25 Jun
4 wk after
Coriander
Coriandrum sativum
25 May
4 Jul
0 wk
7 Jun
24 Jun
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
1 May
8-10 wk
27 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
16 – 30 Mar
6 May
8-10 wk
25 May
1 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
14 May
6-8 wk
25 May
25 Jun
0 wk
19 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
14 May
6-8 wk
25 May
25 Jun
0 wk
26 May
15 Jun
0 wk
Rosemary
Salvia rosmarinus
Greenhouse
16 Feb – 16 Mar
18 Mar
10-14 wk
25 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
Season too short
3 – 10 May
3-4 wk
31 May
1 wk after
Cornflower
Centaurea cyanus
25 May
5 Jul
0 wk
26 May
25 Jun
0 wk
Statice
Limonium sinuatum
Season too short
16 – 30 Mar
8-10 wk
25 May
0 wk
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
26 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
5 Apr – 3 May
4-8 wk
31 May
1 wk after
31 May
1 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
7 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Season too short
8 Mar – 5 Apr
26 Mar
8-12 wk
31 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
4-6 wk
7 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
16 – 30 Mar
1 Apr
8-10 wk
25 May
27 May
0 wk
Love in a mist
Nigella damascena
25 May
11 Jun
0 wk
26 May
1 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
26 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
2 – 30 Mar
1 Apr
8-12 wk
25 May
27 May
0 wk
Cardoon
Cynara cardunculus
Season too short
2 – 30 Mar
8 Mar
8-12 wk
25 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
5 – 19 Apr
6-8 wk
31 May
1 wk after
Corn poppy
Papaver rhoeas
25 May
26 Jun
0 wk
26 May
16 Jun
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
21 Apr
8-12 wk
25 May
16 Jun
0 wk
4 Jun
6 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
22 Mar – 5 Apr
8-10 wk
31 May
1 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
21 May
5-8 wk
25 May
25 Jun
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
15 May
6-8 wk
25 May
26 Jun
0 wk
7 Jun
16 Jun
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
19 Apr – 3 May
4-6 wk
31 May
1 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
16 May
8-10 wk
25 May
11 Jul
0 wk
4 Jun
1 Jul
1 wk after
Petunia
Petunia
Season too short
2 – 30 Mar
8-12 wk
25 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
30 Mar – 13 Apr
15 Apr
6-8 wk
25 May
27 May
0 wk
19 Jun
4 wk after
Common zinnia
Zinnia elegans
Season too short
13 – 27 Apr
4-6 wk
25 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
26 Apr – 10 May
3-5 wk
31 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
13 – 27 Apr
4-6 wk
25 May
0 wk
7 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
15 Mar – 12 Apr
8-12 wk
7 Jun
2 wk after
Bee balm
Monarda didyma
2 – 30 Mar
1 Apr
8-12 wk
25 May
27 May
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
31 Mar
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
2 Jun
0 wk
26 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
20 May
6-8 wk
25 May
1 Jul
0 wk
9 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
19 May
4-6 wk
25 May
16 Jun
0 wk
7 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
8 – 22 Mar
10-12 wk
31 May
1 wk after
Sunflower
Helianthus annuus
Greenhouse
27 Apr – 4 May
26 May
3-4 wk
25 May
16 Jun
0 wk
31 May
6 Jun
1 wk after
China aster
Callistephus chinensis
Fleece
5 – 19 Apr
24 Apr
6-8 wk
31 May
5 Jun
1 wk after
19 Jun
4 wk after
Annual phlox
Phlox drummondii
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
1 Apr
8-12 wk
25 May
27 May
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
Black-eyed Susan
Rudbeckia hirta
Fleece
30 Mar – 13 Apr
14 Apr
6-8 wk
25 May
26 May
0 wk
19 Jun
4 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
22 Mar
8-10 wk
25 May
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
22 Mar – 19 Apr
6-10 wk
31 May
1 wk after
California goldenpoppy
Eschscholzia californica
25 May
5 Jun
0 wk
26 May
26 May
0 wk
Painted tongue
Salpiglossis sinuata
Greenhouse
16 – 30 Mar
21 Apr
8-10 wk
25 May
16 Jun
0 wk
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
7 Jun
2 wk after