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Method
Rel. frost
Last spring frost (0°C) 20 Jun Frost 1 of 10 years · 20 years of data
Frost-free season 98 days 20 Jun – 26 Sep
Probability that frost is over

90% = 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)
2 – 16 May
15 Jun
5-7 wk
20 Jun
20 Jul
0 wk
24 Jun
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 May
27 Jun
4-6 wk
20 Jun
25 Jul
0 wk
24 Jun
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
3 Apr – 1 May
8-12 wk
26 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 May
10 Jun
5-7 wk
20 Jun
15 Jul
0 wk
20 Jun
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 May – 5 Jun
7 Jun
4-5 wk
3 Jul
5 Jul
2 wk after
25 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jul
3-4 wk
29 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
28 Mar – 25 Apr
31 Mar
8-12 wk
20 Jun
0 wk
20 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
16 Jun
1 wk before
16 Jun
1 wk before
Maize
Zea mays
Season too short
23 – 30 May
3-4 wk
20 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 May – 1 Jun
4 Jul
3-4 wk
22 Jun
25 Jul
0 wk
11 Jul
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Jun
5 Jul
0 wk
20 Jun
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 May
10 Jun
5-7 wk
20 Jun
15 Jul
0 wk
20 Jun
5 Jul
0 wk
Potato
Solanum tuberosum
Fleece
13 – 27 May
19 May
4-6 wk
24 Jun
1 wk after
24 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 May
20 Jun
5-7 wk
20 Jun
25 Jul
0 wk
24 Jun
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
23 – 30 May
25 May
3-4 wk
20 Jun
0 wk
30 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 May
22 Jun
4-6 wk
20 Jun
20 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 May
9 Jul
3-4 wk
20 Jun
30 Jul
0 wk
24 Jun
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 May
22 Jun
4-6 wk
20 Jun
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
15 – 29 May
1 Jun
2-4 wk
12 Jun
15 Jun
1 wk before
12 Jun
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
16 Jun
1 wk before
16 Jun
1 wk before
Spinach
Spinacia oleracea
23 – 30 May
24 Jul
3-4 wk
20 Jun
14 Aug
0 wk
16 Jun
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
22 Jul – 5 Aug
4-6 wk
2 Sep
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
23 May – 6 Jun
2-4 wk
20 Jun
0 wk
11 Jul
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 May
22 Jun
4-6 wk
20 Jun
20 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 May
24 Jun
3-4 wk
20 Jun
15 Jul
0 wk
24 Jun
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
Season too short
15 – 29 May
4-6 wk
26 Jun
1 wk after
Lemon balm
Melissa officinalis
11 – 25 Apr
20 May
8-10 wk
20 Jun
15 Jul
0 wk
25 Jul
5 wk after
Dill
Anethum graveolens
24 Jun
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
25 Apr – 9 May
3 Jun
6-8 wk
20 Jun
15 Jul
0 wk
24 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
28 Mar – 25 Apr
20 May
8-12 wk
20 Jun
15 Jul
0 wk
25 Jul
5 wk after
Coriander
Coriandrum sativum
20 Jun
14 Aug
0 wk
11 Jul
4 Aug
3 wk after
Garden sage
Salvia officinalis
13 – 27 Apr
5 May
8-10 wk
22 Jun
30 Jun
0 wk
Common thyme
Thymus vulgaris
11 – 25 Apr
10 May
8-10 wk
20 Jun
5 Jul
0 wk
Oregano
Origanum vulgare
25 Apr – 9 May
24 May
6-8 wk
20 Jun
5 Jul
0 wk
25 Jul
5 wk after
Parsley
Petroselinum crispum
25 Apr – 9 May
24 May
6-8 wk
20 Jun
5 Jul
0 wk
24 Jun
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
16 Mar – 13 Apr
6 Apr
10-14 wk
22 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
29 May – 5 Jun
3-4 wk
26 Jun
1 wk after
Cornflower
Centaurea cyanus
20 Jun
15 Jul
0 wk
24 Jun
5 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
11 – 25 Apr
17 Apr
8-10 wk
20 Jun
0 wk
Sweet William
Dianthus barbatus
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
6 Jul
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
25 Apr – 9 May
1 May
6-8 wk
20 Jun
0 wk
31 Jul
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
25 Apr – 9 May
9 May
6-8 wk
20 Jun
20 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
5 May – 2 Jun
23 May
4-8 wk
30 Jun
1 wk after
30 Jun
1 wk after
Foxglove
Digitalis purpurea
11 – 25 Apr
8-10 wk
20 Jun
0 wk
11 Jul
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
10 Apr – 8 May
22 Apr
8-12 wk
3 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
25 Apr – 9 May
11 May
6-8 wk
20 Jun
22 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
22 May – 5 Jun
4-6 wk
3 Jul
2 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Apr
20 Apr
8-10 wk
22 Jun
0 wk
Love in a mist
Nigella damascena
20 Jun
30 Jun
0 wk
24 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
31 Jul
6 wk after
Purple-top vervain
Verbena bonariensis
30 Mar – 27 Apr
20 Apr
8-12 wk
22 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
3 Apr – 1 May
8-12 wk
26 Jun
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
3 Apr – 1 May
8-12 wk
26 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
1 – 15 May
6-8 wk
26 Jun
1 wk after
Corn poppy
Papaver rhoeas
20 Jun
15 Jul
0 wk
24 Jun
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
28 Mar – 25 Apr
10 May
8-12 wk
20 Jun
5 Jul
0 wk
6 Jul
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
17 Apr – 1 May
27 Apr
8-10 wk
26 Jun
1 wk after
Sweet pea
Lathyrus odoratus
25 Apr – 16 May
31 May
5-8 wk
20 Jun
5 Jul
0 wk
Stock
Matthiola incana
25 Apr – 9 May
3 Jun
6-8 wk
20 Jun
15 Jul
0 wk
11 Jul
3 wk after
Wormwood
Artemisia absinthium
25 Apr – 9 May
4 May
6-8 wk
20 Jun
0 wk
11 Jul
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
15 – 29 May
4-6 wk
26 Jun
1 wk after
Garden pansy
Viola × wittrockiana
11 – 25 Apr
20 May
8-10 wk
20 Jun
15 Jul
0 wk
6 Jul
2 wk after
Petunia
Petunia
Greenhouse
28 Mar – 25 Apr
17 Apr
8-12 wk
20 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
27 Apr – 11 May
4 May
6-8 wk
22 Jun
0 wk
8 Aug
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
9 – 23 May
15 May
4-6 wk
20 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
22 May – 5 Jun
3-5 wk
26 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
9 – 23 May
23 May
4-6 wk
20 Jun
20 Jun
0 wk
11 Jul
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
10 Apr – 8 May
8-12 wk
3 Jul
2 wk after
Bee balm
Monarda didyma
28 Mar – 25 Apr
20 Apr
8-12 wk
20 Jun
0 wk
25 Jul
5 wk after
Yarrow
Achillea millefolium
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
11 Jul
3 wk after
Safflower
Carthamus tinctorius
20 Jun
0 wk
24 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
25 Apr – 9 May
24 May
6-8 wk
20 Jun
5 Jul
0 wk
2 Jun
25 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 May
7 Jun
4-6 wk
20 Jun
5 Jul
0 wk
11 Jul
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
3 – 17 Apr
10-12 wk
26 Jun
1 wk after
Sunflower
Helianthus annuus
5 – 12 Jun
14 Jun
3-4 wk
3 Jul
5 Jul
2 wk after
25 Jul
5 wk after
China aster
Callistephus chinensis
8 – 22 May
3 Jun
6-8 wk
3 Jul
15 Jul
2 wk after
8 Aug
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
25 Apr – 9 May
11 May
6-8 wk
20 Jun
22 Jun
0 wk
11 Jul
3 wk after
Hollyhock
Alcea rosea
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
11 Jul
3 wk after
Alpine delphinium
Delphinium elatum
28 Mar – 25 Apr
20 Apr
8-12 wk
20 Jun
0 wk
25 Jul
5 wk after
African marigold
Tagetes erecta
Greenhouse
25 Apr – 9 May
11 May
6-8 wk
20 Jun
22 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
27 Apr – 11 May
24 May
6-8 wk
22 Jun
5 Jul
0 wk
8 Aug
7 wk after
Wood sage
Salvia nemorosa
11 – 25 Apr
8-10 wk
20 Jun
0 wk
25 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
17 Apr – 15 May
6-10 wk
26 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
20 Jun
15 Jul
0 wk
24 Jun
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
24 Apr – 8 May
10 May
8-10 wk
3 Jul
5 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
25 Apr – 9 May
4 May
6-8 wk
20 Jun
0 wk
11 Jul
3 wk after