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