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Method
Rel. frost
Last spring frost (0°C) 27 May Frost 3 of 4 years · 20 years of data
Frost-free season 86 days 27 May – 21 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)
8 – 22 Apr
15 Jun
5-7 wk
27 May
20 Jul
0 wk
31 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
27 Jun
4-6 wk
27 May
25 Jul
0 wk
31 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
10 Mar – 7 Apr
8-12 wk
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
10 Jun
5-7 wk
27 May
15 Jul
0 wk
27 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
5 – 12 May
14 May
3-4 wk
2 Jun
4 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
22 May
4-5 wk
9 Jun
19 Jun
2 wk after
1 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
4 Mar – 1 Apr
18 Mar
8-12 wk
27 May
0 wk
6 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 May
1 wk after
31 May
1 wk after
Maize
Zea mays
Greenhouse
29 Apr – 6 May
4 May
3-4 wk
27 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
18 Jun
3-4 wk
29 May
9 Jul
0 wk
17 Jun
29 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
1 Jul
0 wk
27 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
10 Jun
5-7 wk
27 May
15 Jul
0 wk
27 May
5 Jul
0 wk
Potato
Solanum tuberosum
1 – 15 May
4 May
4-6 wk
12 Jun
2 wk after
12 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
16 Jun
5-7 wk
27 May
21 Jul
0 wk
31 May
11 Jul
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
5 – 12 May
15 Jun
3-4 wk
2 Jun
6 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
29 Apr – 6 May
20 May
3-4 wk
27 May
10 Jun
0 wk
6 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
22 Jun
4-6 wk
27 May
20 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
5 Jul
3-4 wk
27 May
26 Jul
0 wk
31 May
16 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
22 Jun
4-6 wk
27 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
14 May
2-4 wk
27 May
28 May
0 wk
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 May
1 wk after
31 May
1 wk after
Spinach
Spinacia oleracea
29 Apr – 6 May
24 Jul
3-4 wk
27 May
14 Aug
0 wk
23 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
28 Jun – 12 Jul
4-6 wk
9 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
1 – 15 Apr
13 Apr
6-8 wk
27 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
5 – 19 May
21 May
2-4 wk
2 Jun
4 Jun
1 wk after
1 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
22 Jun
4-6 wk
27 May
20 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
20 Jun
3-4 wk
27 May
11 Jul
0 wk
31 May
1 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
21 Apr – 5 May
24 May
4-6 wk
2 Jun
21 Jun
1 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
16 May
8-10 wk
27 May
11 Jul
0 wk
1 Jul
1 Jul
5 wk after
Dill
Anethum graveolens
31 May
9 Jul
1 wk after
Wild chives
Allium schoenoprasum
1 – 15 Apr
3 Jun
6-8 wk
27 May
15 Jul
0 wk
31 May
5 Jul
1 wk after
Spearmint
Mentha spicata
4 Mar – 1 Apr
20 May
8-12 wk
27 May
15 Jul
0 wk
1 Jul
5 Jul
5 wk after
Coriander
Coriandrum sativum
27 May
29 Jul
0 wk
17 Jun
19 Jul
3 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
5 May
8-10 wk
29 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
10 May
8-10 wk
27 May
5 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
24 May
6-8 wk
27 May
5 Jul
0 wk
1 Jul
5 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
24 May
6-8 wk
27 May
5 Jul
0 wk
31 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
18 Feb – 18 Mar
26 Mar
10-14 wk
27 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
5 – 12 May
31 May
3-4 wk
2 Jun
21 Jun
1 wk after
Cornflower
Centaurea cyanus
27 May
15 Jul
0 wk
31 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
24 Mar – 7 Apr
17 Apr
8-10 wk
2 Jun
12 Jun
1 wk after
Sweet William
Dianthus barbatus
1 – 15 Apr
6-8 wk
27 May
0 wk
12 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
7 – 21 Apr
1 May
6-8 wk
2 Jun
12 Jun
1 wk after
25 Jul
8 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
30 Apr
6-8 wk
7 Jun
11 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 May – 3 Jun
14 May
4-8 wk
1 Jul
5 wk after
1 Jul
5 wk after
Foxglove
Digitalis purpurea
18 Mar – 1 Apr
8-10 wk
27 May
0 wk
17 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
17 Mar – 14 Apr
11 Jun
8-12 wk
9 Jun
6 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
7 – 21 Apr
11 May
6-8 wk
2 Jun
22 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
18 Mar – 1 Apr
16 Apr
8-10 wk
27 May
11 Jun
0 wk
Love in a mist
Nigella damascena
27 May
26 Jun
0 wk
31 May
16 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
7 – 21 Apr
21 Apr
6-8 wk
2 Jun
2 Jun
1 wk after
25 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
Fleece
4 Mar – 1 Apr
16 Apr
8-12 wk
27 May
11 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
4 Mar – 1 Apr
21 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
10 Mar – 7 Apr
16 Apr
8-12 wk
2 Jun
11 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
7 – 21 Apr
30 Apr
6-8 wk
2 Jun
11 Jun
1 wk after
Corn poppy
Papaver rhoeas
27 May
11 Jul
0 wk
31 May
1 Jul
1 wk after
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
6 May
8-12 wk
27 May
1 Jul
0 wk
12 Jun
21 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
27 Apr
8-10 wk
9 Jun
22 Jun
2 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
31 May
5-8 wk
27 May
5 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
30 May
6-8 wk
27 May
11 Jul
0 wk
17 Jun
1 Jul
3 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
4 May
6-8 wk
27 May
15 Jun
0 wk
17 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
21 Apr – 5 May
9 May
4-6 wk
2 Jun
6 Jun
1 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
20 May
8-10 wk
27 May
15 Jul
0 wk
12 Jun
5 Jul
2 wk after
Petunia
Petunia
Fleece
10 Mar – 7 Apr
17 Apr
8-12 wk
2 Jun
12 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
Fleece
1 – 15 Apr
30 Apr
6-8 wk
27 May
11 Jun
0 wk
1 Jul
5 wk after
Common zinnia
Zinnia elegans
Fleece
21 Apr – 5 May
24 May
4-6 wk
2 Jun
21 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
28 Apr – 12 May
31 May
3-5 wk
2 Jun
21 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
21 Apr – 5 May
21 May
4-6 wk
2 Jun
18 Jun
1 wk after
1 Jul
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
17 Mar – 14 Apr
16 May
8-12 wk
9 Jun
11 Jul
2 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
16 Apr
8-12 wk
27 May
11 Jun
0 wk
1 Jul
5 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
4 Apr
6-8 wk
27 May
0 wk
17 Jun
3 wk after
Safflower
Carthamus tinctorius
27 May
15 Jun
0 wk
31 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
24 May
6-8 wk
27 May
5 Jul
0 wk
9 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
3 Jun
4-6 wk
27 May
1 Jul
0 wk
17 Jun
21 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
10 – 24 Mar
20 Mar
10-12 wk
2 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
23 May
3-4 wk
9 Jun
13 Jun
2 wk after
1 Jul
5 wk after
China aster
Callistephus chinensis
14 – 28 Apr
12 May
6-8 wk
9 Jun
23 Jun
2 wk after
15 Jul
7 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
26 Apr
6-8 wk
2 Jun
7 Jun
1 wk after
15 Jul
7 wk after
Hollyhock
Alcea rosea
1 – 15 Apr
6-8 wk
27 May
0 wk
17 Jun
3 wk after
Alpine delphinium
Delphinium elatum
4 Mar – 1 Apr
16 Apr
8-12 wk
27 May
11 Jun
0 wk
1 Jul
5 wk after
African marigold
Tagetes erecta
Fleece
7 – 21 Apr
11 May
6-8 wk
2 Jun
22 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
2 May
6-8 wk
29 May
13 Jun
0 wk
15 Jul
7 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
6 Apr
8-10 wk
27 May
1 Jun
0 wk
1 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
24 Mar – 21 Apr
10 May
6-10 wk
2 Jun
21 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
27 May
4 Jul
0 wk
31 May
24 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
24 Mar – 7 Apr
24 Apr
8-10 wk
2 Jun
19 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
4 May
6-8 wk
27 May
15 Jun
0 wk
17 Jun
3 wk after