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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 3 of 4 years · 20 years of data
Frost-free season 95 days 28 May – 31 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)
9 – 23 Apr
15 Jun
5-7 wk
28 May
20 Jul
0 wk
1 Jun
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
27 Jun
4-6 wk
28 May
25 Jul
0 wk
1 Jun
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
11 Mar – 8 Apr
20 Mar
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
10 Jun
5-7 wk
28 May
15 Jul
0 wk
28 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 May
14 May
3-4 wk
10 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
21 May
4-5 wk
10 Jun
18 Jun
2 wk after
2 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
5 Mar – 2 Apr
25 Mar
8-12 wk
28 May
0 wk
7 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Jun
1 wk after
1 Jun
1 wk after
Maize
Zea mays
Greenhouse
30 Apr – 7 May
17 May
3-4 wk
28 May
7 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
17 Jun
3-4 wk
30 May
8 Jul
0 wk
18 Jun
28 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
27 Jun
0 wk
28 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
10 Jun
5-7 wk
28 May
15 Jul
0 wk
28 May
5 Jul
0 wk
Potato
Solanum tuberosum
2 – 16 May
14 May
4-6 wk
13 Jun
2 wk after
13 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
12 Jun
5-7 wk
28 May
17 Jul
0 wk
1 Jun
7 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
1 Jun
3-4 wk
10 Jun
22 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
17 May
3-4 wk
30 May
7 Jun
0 wk
18 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
22 Jun
4-6 wk
28 May
20 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
1 Jul
3-4 wk
28 May
22 Jul
0 wk
1 Jun
12 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
22 Jun
4-6 wk
28 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
21 May
2-4 wk
28 May
4 Jun
0 wk
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Jun
1 wk after
1 Jun
1 wk after
Spinach
Spinacia oleracea
30 Apr – 7 May
24 Jul
3-4 wk
28 May
14 Aug
0 wk
24 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
29 Jun – 13 Jul
4-6 wk
10 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Apr
26 Apr
6-8 wk
28 May
7 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
21 May
2-4 wk
10 Jun
2 wk after
16 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
22 Jun
4-6 wk
28 May
20 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
16 Jun
3-4 wk
28 May
7 Jul
0 wk
1 Jun
27 Jun
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
Fleece
29 Apr – 13 May
10 May
4-6 wk
10 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
12 May
8-10 wk
28 May
7 Jul
0 wk
2 Jul
5 wk after
Dill
Anethum graveolens
1 Jun
8 Jul
1 wk after
Wild chives
Allium schoenoprasum
2 – 16 Apr
3 Jun
6-8 wk
28 May
15 Jul
0 wk
1 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
5 Mar – 2 Apr
20 May
8-12 wk
28 May
15 Jul
0 wk
2 Jul
5 Jul
5 wk after
Coriander
Coriandrum sativum
28 May
28 Jul
0 wk
18 Jun
18 Jul
3 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
5 May
8-10 wk
30 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
10 May
8-10 wk
28 May
5 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
0 wk
2 Jul
5 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
0 wk
1 Jun
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
12 Mar
10-14 wk
30 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
Fleece
13 – 20 May
17 May
3-4 wk
10 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
15 Jul
0 wk
1 Jun
5 Jul
1 wk after
Statice
Limonium sinuatum
1 – 15 Apr
15 Apr
8-10 wk
10 Jun
10 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
13 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
29 Apr
6-8 wk
10 Jun
10 Jun
2 wk after
10 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
3 May
6-8 wk
8 Jun
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 May – 4 Jun
17 May
4-8 wk
2 Jul
5 wk after
2 Jul
5 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
18 Jun
3 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
28 May
8-12 wk
29 Jun
23 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
9 May
6-8 wk
10 Jun
20 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
2 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
3 Apr
8-10 wk
30 May
0 wk
Love in a mist
Nigella damascena
28 May
22 Jun
0 wk
1 Jun
12 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
8 – 22 Apr
27 Apr
6-8 wk
3 Jun
8 Jun
1 wk after
26 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
3 Apr
8-12 wk
30 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
5 Mar – 2 Apr
21 Mar
8-12 wk
28 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
11 Mar – 8 Apr
19 Apr
8-12 wk
3 Jun
14 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
8 – 22 Apr
3 May
6-8 wk
3 Jun
14 Jun
1 wk after
Corn poppy
Papaver rhoeas
28 May
7 Jul
0 wk
1 Jun
27 Jun
1 wk after
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
2 May
8-12 wk
28 May
27 Jun
0 wk
13 Jun
17 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
1 – 15 Apr
3 May
8-10 wk
10 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
31 May
5-8 wk
28 May
5 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
26 May
6-8 wk
28 May
7 Jul
0 wk
18 Jun
27 Jun
3 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
0 wk
18 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
12 May
4-6 wk
3 Jun
9 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
20 May
8-10 wk
28 May
15 Jul
0 wk
13 Jun
5 Jul
2 wk after
Petunia
Petunia
18 Mar – 15 Apr
15 Apr
8-12 wk
10 Jun
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
17 Apr
6-8 wk
30 May
0 wk
16 Jul
7 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
10 May
4-6 wk
10 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
17 May
3-5 wk
10 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
17 May
4-6 wk
10 Jun
14 Jun
2 wk after
16 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
18 Mar – 15 Apr
19 May
8-12 wk
10 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
12 Apr
8-12 wk
28 May
7 Jun
0 wk
2 Jul
5 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
4 Apr
6-8 wk
28 May
0 wk
18 Jun
3 wk after
Safflower
Carthamus tinctorius
28 May
15 Jun
0 wk
1 Jun
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
0 wk
10 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
30 May
4-6 wk
28 May
27 Jun
0 wk
18 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
24 Mar
10-12 wk
3 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
20 May
3-4 wk
10 Jun
10 Jun
2 wk after
2 Jul
5 wk after
China aster
Callistephus chinensis
15 – 29 Apr
9 May
6-8 wk
10 Jun
20 Jun
2 wk after
16 Jul
7 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
9 May
6-8 wk
3 Jun
20 Jun
1 wk after
16 Jul
7 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
18 Jun
3 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
12 Apr
8-12 wk
28 May
7 Jun
0 wk
2 Jul
5 wk after
African marigold
Tagetes erecta
15 – 29 Apr
9 May
6-8 wk
10 Jun
20 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
29 Apr
6-8 wk
30 May
10 Jun
0 wk
16 Jul
7 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
2 Apr
8-10 wk
28 May
28 May
0 wk
2 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
26 Apr
6-10 wk
10 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
30 Jun
0 wk
1 Jun
20 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
25 Mar – 8 Apr
23 Apr
8-10 wk
3 Jun
18 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
0 wk
18 Jun
3 wk after