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Method
Rel. frost
Last spring frost (0°C) 21 May Frost 3 of 4 years · 20 years of data
Frost-free season 104 days 21 May – 2 Sep
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)
2 – 16 Apr
14 Jun
5-7 wk
21 May
19 Jul
0 wk
22 May
9 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
26 Jun
4-6 wk
21 May
24 Jul
0 wk
22 May
14 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
9 Mar – 6 Apr
30 Mar
8-12 wk
1 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
9 Jun
5-7 wk
21 May
14 Jul
0 wk
21 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 May
24 May
3-4 wk
10 Jun
14 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
24 May
4-5 wk
10 Jun
21 Jun
3 wk after
15 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
18 Mar
8-12 wk
21 May
0 wk
3 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 May
2 Jun
0 wk
22 May
23 May
0 wk
Maize
Zea mays
Fleece
4 – 11 May
14 May
3-4 wk
1 Jun
4 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
20 Jun
3-4 wk
27 May
11 Jul
1 wk after
3 Jun
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
4 Jul
0 wk
21 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
9 Jun
5-7 wk
21 May
14 Jul
0 wk
21 May
4 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
17 May
4-6 wk
31 May
14 Jun
1 wk after
31 May
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
19 Jun
5-7 wk
21 May
24 Jul
0 wk
22 May
14 Jul
0 wk
Pumpkin
Cucurbita pepo
27 May – 3 Jun
29 May
3-4 wk
24 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
24 May
3-4 wk
27 May
14 Jun
1 wk after
3 Jun
4 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
21 Jun
4-6 wk
21 May
19 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
8 Jul
3-4 wk
21 May
29 Jul
0 wk
22 May
19 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
21 Jun
4-6 wk
21 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
27 May
2-4 wk
21 May
10 Jun
0 wk
21 May
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 May
2 Jun
0 wk
22 May
23 May
0 wk
Spinach
Spinacia oleracea
23 – 30 Apr
23 Jul
3-4 wk
21 May
13 Aug
0 wk
18 May
3 Aug
0 wk
Sweet potato
Ipomoea batatas
15 – 29 Jun
4-6 wk
27 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
6 – 20 Apr
23 Apr
6-8 wk
1 Jun
4 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
31 May
2-4 wk
10 Jun
14 Jun
3 wk after
3 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
21 Jun
4-6 wk
21 May
19 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
23 Jun
3-4 wk
21 May
14 Jul
0 wk
22 May
4 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
13 – 27 May
4-6 wk
24 Jun
5 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
19 May
8-10 wk
21 May
14 Jul
0 wk
15 Jun
4 Jul
4 wk after
Dill
Anethum graveolens
22 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
2 Jun
6-8 wk
21 May
14 Jul
0 wk
22 May
4 Jul
0 wk
Spearmint
Mentha spicata
26 Feb – 26 Mar
19 May
8-12 wk
21 May
14 Jul
0 wk
15 Jun
4 Jul
4 wk after
Coriander
Coriandrum sativum
21 May
31 Jul
0 wk
3 Jun
21 Jul
2 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
12 – 26 Mar
9 May
8-10 wk
21 May
4 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
23 May
6-8 wk
21 May
4 Jul
0 wk
15 Jun
24 Jun
4 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
23 May
6-8 wk
21 May
4 Jul
0 wk
22 May
24 Jun
0 wk
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
14 Mar
10-14 wk
27 May
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
27 May – 3 Jun
3-4 wk
24 Jun
5 wk after
Cornflower
Centaurea cyanus
21 May
14 Jul
0 wk
22 May
4 Jul
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
18 Apr
8-10 wk
10 Jun
13 Jun
3 wk after
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
31 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
2 May
6-8 wk
10 Jun
13 Jun
3 wk after
27 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Apr
10 May
6-8 wk
5 Jun
21 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
20 Apr – 18 May
24 May
4-8 wk
15 Jun
21 Jun
4 wk after
15 Jun
4 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
3 Jun
2 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
7 Jun
8-12 wk
24 Jun
2 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
12 May
6-8 wk
10 Jun
23 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
3 wk after
Chinese lantern
Physalis alkekengi
18 Mar – 1 Apr
6 Apr
8-10 wk
27 May
1 Jun
1 wk after
Love in a mist
Nigella damascena
21 May
29 Jun
0 wk
22 May
19 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
6 – 20 Apr
2 May
6-8 wk
1 Jun
13 Jun
2 wk after
10 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
4 Mar – 1 Apr
6 Apr
8-12 wk
27 May
1 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
2 – 30 Mar
20 Mar
8-12 wk
25 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
18 Mar – 15 Apr
12 Apr
8-12 wk
10 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
15 – 29 Apr
26 Apr
6-8 wk
10 Jun
3 wk after
Corn poppy
Papaver rhoeas
21 May
14 Jul
0 wk
22 May
4 Jul
0 wk
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
9 May
8-12 wk
21 May
4 Jul
0 wk
31 May
24 Jun
1 wk after
Flossflower
Ageratum houstonianum
15 – 29 Apr
28 Apr
8-10 wk
24 Jun
5 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
30 May
5-8 wk
21 May
4 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
2 Jun
6-8 wk
21 May
14 Jul
0 wk
3 Jun
4 Jul
2 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
3 May
6-8 wk
21 May
14 Jun
0 wk
3 Jun
4 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
20 Apr – 4 May
19 May
4-6 wk
1 Jun
16 Jun
2 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
19 May
8-10 wk
21 May
14 Jul
0 wk
31 May
4 Jul
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
18 Apr
8-12 wk
10 Jun
13 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Apr
20 Apr
6-8 wk
27 May
1 Jun
1 wk after
3 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
20 May
4-6 wk
10 Jun
17 Jun
3 wk after
Common morning glory
Ipomoea purpurea
20 May – 3 Jun
3-5 wk
24 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
24 May
4-6 wk
10 Jun
21 Jun
3 wk after
3 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
1 – 29 Apr
12 May
8-12 wk
24 Jun
7 Jul
5 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
19 Apr
8-12 wk
21 May
14 Jun
0 wk
15 Jun
4 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
3 Apr
6-8 wk
21 May
0 wk
3 Jun
2 wk after
Safflower
Carthamus tinctorius
21 May
14 Jun
0 wk
22 May
4 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
23 May
6-8 wk
21 May
4 Jul
0 wk
5 May
24 Jun
2 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
6 Jun
4-6 wk
21 May
4 Jul
0 wk
3 Jun
24 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
9 – 23 Mar
29 Mar
10-12 wk
1 Jun
7 Jun
2 wk after
Sunflower
Helianthus annuus
13 – 20 May
22 May
3-4 wk
10 Jun
12 Jun
3 wk after
15 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
11 May
6-8 wk
10 Jun
22 Jun
3 wk after
3 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
12 May
6-8 wk
1 Jun
23 Jun
2 wk after
3 Jul
6 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
3 Jun
2 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
19 Apr
8-12 wk
21 May
14 Jun
0 wk
15 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
12 May
6-8 wk
10 Jun
23 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
1 wk after
3 Jul
6 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
9 Apr
8-10 wk
21 May
4 Jun
0 wk
15 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
15 Apr – 13 May
23 Apr
6-10 wk
24 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
21 May
7 Jul
0 wk
22 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
23 Mar – 6 Apr
26 Apr
8-10 wk
1 Jun
21 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
3 May
6-8 wk
21 May
14 Jun
0 wk
3 Jun
4 Jun
2 wk after