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Method
Rel. frost
Last spring frost (0°C) 22 May Frost 3 of 4 years · 20 years of data
Frost-free season 93 days 22 May – 23 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)
3 – 17 Apr
10 Jun
5-7 wk
22 May
15 Jul
0 wk
23 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
22 Jun
4-6 wk
22 May
20 Jul
0 wk
23 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
5 Jun
5-7 wk
22 May
10 Jul
0 wk
22 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
30 Apr – 7 May
21 May
3-4 wk
28 May
11 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
21 May
4-5 wk
4 Jun
18 Jun
2 wk after
16 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jun
3-4 wk
30 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
27 Feb – 27 Mar
16 Mar
8-12 wk
22 May
0 wk
28 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
0 wk
23 May
0 wk
Maize
Zea mays
Greenhouse
24 Apr – 1 May
11 May
3-4 wk
22 May
1 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
17 Jun
3-4 wk
24 May
8 Jul
0 wk
4 Jun
28 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
30 Jun
0 wk
22 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
5 Jun
5-7 wk
22 May
10 Jul
0 wk
22 May
30 Jun
0 wk
Potato
Solanum tuberosum
20 Apr – 4 May
29 Apr
4-6 wk
1 Jun
1 wk after
1 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
15 Jun
5-7 wk
22 May
20 Jul
0 wk
23 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
7 – 14 May
26 May
3-4 wk
4 Jun
16 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Apr – 3 May
8 May
3-4 wk
24 May
29 May
0 wk
4 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
4 Jul
3-4 wk
22 May
25 Jul
0 wk
23 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
12 May
2-4 wk
22 May
26 May
0 wk
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
24 Apr – 1 May
19 Jul
3-4 wk
22 May
9 Aug
0 wk
19 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
27 Mar – 10 Apr
20 Apr
6-8 wk
22 May
1 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
30 Apr – 14 May
28 May
2-4 wk
28 May
11 Jun
1 wk after
16 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
19 Jun
3-4 wk
22 May
10 Jul
0 wk
23 May
30 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
16 – 30 Apr
18 May
4-6 wk
28 May
15 Jun
1 wk after
Lemon balm
Melissa officinalis
13 – 27 Mar
15 May
8-10 wk
22 May
10 Jul
0 wk
16 Jun
30 Jun
4 wk after
Dill
Anethum graveolens
23 May
8 Jul
0 wk
Wild chives
Allium schoenoprasum
27 Mar – 10 Apr
29 May
6-8 wk
22 May
10 Jul
0 wk
23 May
30 Jun
0 wk
Spearmint
Mentha spicata
27 Feb – 27 Mar
15 May
8-12 wk
22 May
10 Jul
0 wk
16 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
22 May
28 Jul
0 wk
4 Jun
18 Jul
2 wk after
Garden sage
Salvia officinalis
15 – 29 Mar
30 Apr
8-10 wk
24 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
13 – 27 Mar
5 May
8-10 wk
22 May
30 Jun
0 wk
Oregano
Origanum vulgare
27 Mar – 10 Apr
19 May
6-8 wk
22 May
30 Jun
0 wk
16 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
27 Mar – 10 Apr
19 May
6-8 wk
22 May
30 Jun
0 wk
23 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
15 Feb – 15 Mar
12 Mar
10-14 wk
24 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
30 Apr – 7 May
25 May
3-4 wk
28 May
15 Jun
1 wk after
Cornflower
Centaurea cyanus
22 May
10 Jul
0 wk
23 May
30 Jun
0 wk
Statice
Limonium sinuatum
Fleece
19 Mar – 2 Apr
19 Apr
8-10 wk
28 May
14 Jun
1 wk after
Sweet William
Dianthus barbatus
27 Mar – 10 Apr
6-8 wk
22 May
0 wk
1 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
2 – 16 Apr
3 May
6-8 wk
28 May
14 Jun
1 wk after
11 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
7 – 21 Apr
24 Apr
6-8 wk
2 Jun
5 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
21 Apr – 19 May
8 May
4-8 wk
16 Jun
4 wk after
16 Jun
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Mar
8-10 wk
22 May
0 wk
4 Jun
2 wk after
Busy lizzie
Impatiens walleriana
31 Mar – 28 Apr
22 May
8-12 wk
23 Jun
17 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
2 – 16 Apr
13 May
6-8 wk
28 May
24 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
2 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Mar
3 Apr
8-10 wk
24 May
29 May
0 wk
Love in a mist
Nigella damascena
22 May
25 Jun
0 wk
23 May
15 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
2 – 16 Apr
23 Apr
6-8 wk
28 May
4 Jun
1 wk after
11 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Mar
3 Apr
8-12 wk
24 May
29 May
0 wk
Cardoon
Cynara cardunculus
Season too short
27 Feb – 27 Mar
16 Mar
8-12 wk
22 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
5 Mar – 2 Apr
10 Apr
8-12 wk
28 May
5 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
2 – 16 Apr
24 Apr
6-8 wk
28 May
5 Jun
1 wk after
Corn poppy
Papaver rhoeas
22 May
10 Jul
0 wk
23 May
30 Jun
0 wk
Snapdragon
Antirrhinum majus
27 Feb – 27 Mar
5 May
8-12 wk
22 May
30 Jun
0 wk
1 Jun
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
26 Mar – 9 Apr
29 Apr
8-10 wk
4 Jun
24 Jun
2 wk after
Sweet pea
Lathyrus odoratus
27 Mar – 17 Apr
26 May
5-8 wk
22 May
30 Jun
0 wk
Stock
Matthiola incana
27 Mar – 10 Apr
29 May
6-8 wk
22 May
10 Jul
0 wk
4 Jun
30 Jun
2 wk after
Wormwood
Artemisia absinthium
27 Mar – 10 Apr
29 Apr
6-8 wk
22 May
10 Jun
0 wk
4 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
16 – 30 Apr
3 May
4-6 wk
28 May
31 May
1 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Mar
15 May
8-10 wk
22 May
10 Jul
0 wk
1 Jun
30 Jun
1 wk after
Petunia
Petunia
Fleece
5 Mar – 2 Apr
19 Apr
8-12 wk
28 May
14 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Mar – 12 Apr
17 Apr
6-8 wk
24 May
29 May
0 wk
4 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
16 – 30 Apr
18 May
4-6 wk
28 May
15 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
23 Apr – 7 May
25 May
3-5 wk
28 May
15 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
16 – 30 Apr
21 May
4-6 wk
28 May
18 Jun
1 wk after
16 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
31 Mar – 28 Apr
26 Apr
8-12 wk
23 Jun
5 wk after
Bee balm
Monarda didyma
27 Feb – 27 Mar
15 Apr
8-12 wk
22 May
10 Jun
0 wk
16 Jun
4 wk after
Yarrow
Achillea millefolium
27 Mar – 10 Apr
30 Mar
6-8 wk
22 May
0 wk
4 Jun
2 wk after
Safflower
Carthamus tinctorius
22 May
10 Jun
0 wk
23 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
27 Mar – 10 Apr
19 May
6-8 wk
22 May
30 Jun
0 wk
6 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
10 – 24 Apr
2 Jun
4-6 wk
22 May
30 Jun
0 wk
4 Jun
20 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
5 – 19 Mar
20 Mar
10-12 wk
28 May
29 May
1 wk after
Sunflower
Helianthus annuus
Fleece
30 Apr – 7 May
8 Jun
3-4 wk
28 May
29 Jun
1 wk after
4 Jun
19 Jun
2 wk after
China aster
Callistephus chinensis
9 – 23 Apr
9 May
6-8 wk
4 Jun
20 Jun
2 wk after
4 Jul
6 wk after
Annual phlox
Phlox drummondii
2 – 16 Apr
28 Apr
6-8 wk
28 May
9 Jun
1 wk after
4 Jul
6 wk after
Hollyhock
Alcea rosea
27 Mar – 10 Apr
6-8 wk
22 May
0 wk
4 Jun
2 wk after
Alpine delphinium
Delphinium elatum
27 Feb – 27 Mar
15 Apr
8-12 wk
22 May
10 Jun
0 wk
16 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
2 – 16 Apr
13 May
6-8 wk
28 May
24 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
29 Mar – 12 Apr
29 Apr
6-8 wk
24 May
10 Jun
0 wk
4 Jul
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Mar
5 Apr
8-10 wk
22 May
31 May
0 wk
16 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
19 Mar – 16 Apr
4 May
6-10 wk
28 May
15 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
22 May
9 Jul
0 wk
23 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
19 Mar – 2 Apr
23 Apr
8-10 wk
28 May
18 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
27 Mar – 10 Apr
29 Apr
6-8 wk
22 May
10 Jun
0 wk
4 Jun
2 wk after