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Method
Rel. frost
Last spring frost (0°C) 30 May Frost 1 of 10 years · 20 years of data
Frost-free season 113 days 30 May – 20 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)
11 – 25 Apr
12 Jun
5-7 wk
30 May
17 Jul
0 wk
31 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
18 Apr – 2 May
24 Jun
4-6 wk
30 May
22 Jul
0 wk
31 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
13 Mar – 10 Apr
8-12 wk
5 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Apr
7 Jun
5-7 wk
30 May
12 Jul
0 wk
30 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
8 – 15 May
10 May
3-4 wk
5 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
27 May – 3 Jun
4-5 wk
1 Jul
5 wk after
12 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 Jun
3-4 wk
8 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Mar – 4 Apr
28 Mar
8-12 wk
30 May
0 wk
12 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 May
12 Jun
0 wk
31 May
2 Jun
0 wk
Maize
Zea mays
Greenhouse
2 – 9 May
3-4 wk
30 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 May
1 Jul
3-4 wk
1 Jun
22 Jul
0 wk
12 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 May
2 Jul
0 wk
30 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Apr
7 Jun
5-7 wk
30 May
12 Jul
0 wk
30 May
2 Jul
0 wk
Potato
Solanum tuberosum
28 Apr – 12 May
25 May
4-6 wk
9 Jun
22 Jun
1 wk after
9 Jun
12 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Apr
17 Jun
5-7 wk
30 May
22 Jul
0 wk
31 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
15 – 22 May
15 May
3-4 wk
12 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 May
14 Jun
3-4 wk
1 Jun
5 Jul
0 wk
12 Jun
25 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Apr – 2 May
19 Jun
4-6 wk
30 May
17 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 May
6 Jul
3-4 wk
30 May
27 Jul
0 wk
31 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Apr – 2 May
19 Jun
4-6 wk
30 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
2 – 16 May
29 May
2-4 wk
30 May
12 Jun
0 wk
30 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 May
12 Jun
0 wk
31 May
2 Jun
0 wk
Spinach
Spinacia oleracea
2 – 9 May
21 Jul
3-4 wk
30 May
11 Aug
0 wk
27 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
4 – 18 Apr
9 Apr
6-8 wk
30 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
8 – 22 May
17 May
2-4 wk
5 Jun
1 wk after
24 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Apr – 2 May
19 Jun
4-6 wk
30 May
17 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 May
21 Jun
3-4 wk
30 May
12 Jul
0 wk
31 May
2 Jul
0 wk

Herbs

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