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