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Method
Rel. frost
Last spring frost (0°C) 29 May Frost 3 of 4 years · 20 years of data
Frost-free season 87 days 29 May – 24 Aug
Probability that frost is over

25% = 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)
10 – 24 Apr
13 Jun
5-7 wk
29 May
18 Jul
0 wk
30 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
17 Apr – 1 May
25 Jun
4-6 wk
29 May
23 Jul
0 wk
30 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
12 Mar – 9 Apr
21 Mar
8-12 wk
4 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Apr
8 Jun
5-7 wk
29 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
7 – 14 May
30 May
3-4 wk
4 Jun
20 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
7 – 14 May
20 May
4-5 wk
11 Jun
17 Jun
2 wk after
23 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
6 Mar – 3 Apr
27 Mar
8-12 wk
29 May
0 wk
29 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
30 May
0 wk
30 May
0 wk
Maize
Zea mays
Greenhouse
1 – 8 May
20 May
3-4 wk
29 May
10 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
16 Jun
3-4 wk
31 May
7 Jul
0 wk
11 Jun
27 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 May
29 Jun
0 wk
29 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Apr
8 Jun
5-7 wk
29 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Potato
Solanum tuberosum
27 Apr – 11 May
4 May
4-6 wk
8 Jun
1 wk after
8 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Apr
14 Jun
5-7 wk
29 May
19 Jul
0 wk
30 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
14 – 21 May
4 Jun
3-4 wk
11 Jun
25 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 May
7 May
3-4 wk
31 May
0 wk
11 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 Apr – 1 May
20 Jun
4-6 wk
29 May
18 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 May
3 Jul
3-4 wk
29 May
24 Jul
0 wk
30 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Apr – 1 May
20 Jun
4-6 wk
29 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 May
16 May
2-4 wk
29 May
30 May
0 wk
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 May
0 wk
30 May
0 wk
Spinach
Spinacia oleracea
1 – 8 May
22 Jul
3-4 wk
29 May
12 Aug
0 wk
26 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
23 Jun – 7 Jul
4-6 wk
4 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
3 – 17 Apr
29 Apr
6-8 wk
29 May
10 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
7 – 21 May
6 Jun
2-4 wk
4 Jun
20 Jun
1 wk after
23 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 Apr – 1 May
20 Jun
4-6 wk
29 May
18 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 May
18 Jun
3-4 wk
29 May
9 Jul
0 wk
30 May
29 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
Greenhouse
23 Apr – 7 May
24 May
4-6 wk
4 Jun
21 Jun
1 wk after
Lemon balm
Melissa officinalis
20 Mar – 3 Apr
14 May
8-10 wk
29 May
9 Jul
0 wk
23 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
30 May
7 Jul
0 wk
Wild chives
Allium schoenoprasum
3 – 17 Apr
1 Jun
6-8 wk
29 May
13 Jul
0 wk
30 May
3 Jul
0 wk
Spearmint
Mentha spicata
6 Mar – 3 Apr
18 May
8-12 wk
29 May
13 Jul
0 wk
23 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
29 May
27 Jul
0 wk
11 Jun
17 Jul
2 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
3 May
8-10 wk
31 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
20 Mar – 3 Apr
8 May
8-10 wk
29 May
3 Jul
0 wk
Oregano
Origanum vulgare
3 – 17 Apr
22 May
6-8 wk
29 May
3 Jul
0 wk
23 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
3 – 17 Apr
22 May
6-8 wk
29 May
3 Jul
0 wk
30 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
22 Feb – 22 Mar
12 Mar
10-14 wk
31 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
Greenhouse
7 – 14 May
31 May
3-4 wk
4 Jun
21 Jun
1 wk after
Cornflower
Centaurea cyanus
29 May
13 Jul
0 wk
30 May
3 Jul
0 wk
Statice
Limonium sinuatum
Fleece
26 Mar – 9 Apr
19 Apr
8-10 wk
4 Jun
14 Jun
1 wk after
Sweet William
Dianthus barbatus
3 – 17 Apr
6-8 wk
29 May
0 wk
8 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
9 – 23 Apr
3 May
6-8 wk
4 Jun
14 Jun
1 wk after
18 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Apr
30 Apr
6-8 wk
9 Jun
11 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
28 Apr – 26 May
14 May
4-8 wk
23 Jun
4 wk after
23 Jun
4 wk after
Foxglove
Digitalis purpurea
20 Mar – 3 Apr
8-10 wk
29 May
0 wk
11 Jun
2 wk after
Busy lizzie
Impatiens walleriana
7 Apr – 5 May
31 May
8-12 wk
30 Jun
26 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
7 May
6-8 wk
11 Jun
18 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
30 Apr – 14 May
4-6 wk
11 Jun
2 wk after
Chinese lantern
Physalis alkekengi
22 Mar – 5 Apr
2 Apr
8-10 wk
31 May
0 wk
Love in a mist
Nigella damascena
29 May
24 Jun
0 wk
30 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
9 – 23 Apr
23 Apr
6-8 wk
4 Jun
4 Jun
1 wk after
18 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
8 Mar – 5 Apr
2 Apr
8-12 wk
31 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
6 Mar – 3 Apr
19 Mar
8-12 wk
29 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
12 Mar – 9 Apr
16 Apr
8-12 wk
4 Jun
11 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
9 – 23 Apr
30 Apr
6-8 wk
4 Jun
11 Jun
1 wk after
Corn poppy
Papaver rhoeas
29 May
9 Jul
0 wk
30 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
6 Mar – 3 Apr
4 May
8-12 wk
29 May
29 Jun
0 wk
8 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
2 – 16 Apr
29 Apr
8-10 wk
11 Jun
24 Jun
2 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Apr
29 May
5-8 wk
29 May
3 Jul
0 wk
Stock
Matthiola incana
3 – 17 Apr
28 May
6-8 wk
29 May
9 Jul
0 wk
11 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Apr
2 May
6-8 wk
29 May
13 Jun
0 wk
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
23 Apr – 7 May
9 May
4-6 wk
4 Jun
6 Jun
1 wk after
Garden pansy
Viola × wittrockiana
20 Mar – 3 Apr
18 May
8-10 wk
29 May
13 Jul
0 wk
8 Jun
3 Jul
1 wk after
Petunia
Petunia
Fleece
12 Mar – 9 Apr
19 Apr
8-12 wk
4 Jun
14 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Apr
16 Apr
6-8 wk
31 May
0 wk
11 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
23 Apr – 7 May
24 May
4-6 wk
4 Jun
21 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
30 Apr – 14 May
31 May
3-5 wk
4 Jun
21 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
30 Apr – 14 May
14 May
4-6 wk
11 Jun
11 Jun
2 wk after
11 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
19 Mar – 16 Apr
16 May
8-12 wk
11 Jun
11 Jul
2 wk after
Bee balm
Monarda didyma
6 Mar – 3 Apr
14 Apr
8-12 wk
29 May
9 Jun
0 wk
23 Jun
4 wk after
Yarrow
Achillea millefolium
3 – 17 Apr
6-8 wk
29 May
0 wk
11 Jun
2 wk after
Safflower
Carthamus tinctorius
29 May
13 Jun
0 wk
30 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Apr
22 May
6-8 wk
29 May
3 Jul
0 wk
13 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
17 Apr – 1 May
1 Jun
4-6 wk
29 May
29 Jun
0 wk
11 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
12 – 26 Mar
23 Mar
10-12 wk
4 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
7 – 14 May
2 Jun
3-4 wk
4 Jun
23 Jun
1 wk after
11 Jun
13 Jun
2 wk after
China aster
Callistephus chinensis
16 – 30 Apr
9 May
6-8 wk
11 Jun
20 Jun
2 wk after
11 Jul
6 wk after
Annual phlox
Phlox drummondii
9 – 23 Apr
7 May
6-8 wk
4 Jun
18 Jun
1 wk after
11 Jul
6 wk after
Hollyhock
Alcea rosea
3 – 17 Apr
6-8 wk
29 May
0 wk
11 Jun
2 wk after
Alpine delphinium
Delphinium elatum
6 Mar – 3 Apr
14 Apr
8-12 wk
29 May
9 Jun
0 wk
23 Jun
4 wk after
African marigold
Tagetes erecta
16 – 30 Apr
7 May
6-8 wk
11 Jun
18 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Apr
29 Apr
6-8 wk
31 May
10 Jun
0 wk
11 Jul
6 wk after
Wood sage
Salvia nemorosa
20 Mar – 3 Apr
4 Apr
8-10 wk
29 May
30 May
0 wk
23 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
26 Mar – 23 Apr
10 May
6-10 wk
4 Jun
21 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
29 May
3 Jul
0 wk
30 May
23 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
26 Mar – 9 Apr
22 Apr
8-10 wk
4 Jun
17 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Apr
2 May
6-8 wk
29 May
13 Jun
0 wk
11 Jun
2 wk after