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Method
Rel. frost
Last spring frost (0°C) 26 May Frost 3 of 4 years · 20 years of data
Frost-free season 89 days 26 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)
7 – 21 Apr
11 Jun
5-7 wk
26 May
16 Jul
0 wk
27 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
23 Jun
4-6 wk
26 May
21 Jul
0 wk
27 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Apr
6 Jun
5-7 wk
26 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
4 – 11 May
18 May
3-4 wk
1 Jun
8 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
27 Apr – 4 May
31 May
4-5 wk
1 Jun
28 Jun
1 wk after
8 Jun
18 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
3 – 31 Mar
16 Mar
8-12 wk
26 May
0 wk
26 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
23 May
25 May
0 wk
23 May
0 wk
Maize
Zea mays
Greenhouse
28 Apr – 5 May
8 May
3-4 wk
26 May
29 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
20 Jun
3-4 wk
28 May
11 Jul
0 wk
8 Jun
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 May
28 Jun
0 wk
26 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Apr
6 Jun
5-7 wk
26 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Potato
Solanum tuberosum
Fleece
15 – 29 Apr
30 Apr
4-6 wk
27 May
28 May
0 wk
27 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Apr
13 Jun
5-7 wk
26 May
18 Jul
0 wk
27 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
4 – 11 May
10 Jun
3-4 wk
1 Jun
1 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
28 Apr – 5 May
15 May
3-4 wk
26 May
5 Jun
0 wk
1 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
18 Jun
4-6 wk
26 May
16 Jul
0 wk
Lettuce
Lactuca sativa
28 Apr – 5 May
2 Jul
3-4 wk
26 May
23 Jul
0 wk
27 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Apr
18 Jun
4-6 wk
26 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
22 Apr – 6 May
16 May
2-4 wk
20 May
30 May
1 wk before
20 May
20 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
23 May
25 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
28 Apr – 5 May
20 Jul
3-4 wk
26 May
10 Aug
0 wk
23 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
31 Mar – 14 Apr
17 Apr
6-8 wk
26 May
29 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
4 – 18 May
25 May
2-4 wk
1 Jun
8 Jun
1 wk after
20 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
18 Jun
4-6 wk
26 May
16 Jul
0 wk
Garden pea
Pisum sativum
28 Apr – 5 May
17 Jun
3-4 wk
26 May
8 Jul
0 wk
27 May
28 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
20 Apr – 4 May
19 May
4-6 wk
1 Jun
16 Jun
1 wk after
Lemon balm
Melissa officinalis
17 – 31 Mar
13 May
8-10 wk
26 May
8 Jul
0 wk
20 Jun
28 Jun
4 wk after
Dill
Anethum graveolens
27 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
31 Mar – 14 Apr
30 May
6-8 wk
26 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Spearmint
Mentha spicata
3 – 31 Mar
16 May
8-12 wk
26 May
11 Jul
0 wk
20 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
26 May
31 Jul
0 wk
8 Jun
21 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
1 May
8-10 wk
28 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
17 – 31 Mar
6 May
8-10 wk
26 May
1 Jul
0 wk
Oregano
Origanum vulgare
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
0 wk
20 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
0 wk
27 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
17 Feb – 17 Mar
29 Mar
10-14 wk
26 May
7 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
4 – 11 May
26 May
3-4 wk
1 Jun
16 Jun
1 wk after
Cornflower
Centaurea cyanus
26 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Statice
Limonium sinuatum
Fleece
23 Mar – 6 Apr
17 Apr
8-10 wk
1 Jun
12 Jun
1 wk after
Sweet William
Dianthus barbatus
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
6 – 20 Apr
1 May
6-8 wk
1 Jun
12 Jun
1 wk after
15 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
2 – 16 Apr
6 May
6-8 wk
28 May
17 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
13 Apr – 11 May
20 May
4-8 wk
8 Jun
17 Jun
2 wk after
8 Jun
2 wk after
Foxglove
Digitalis purpurea
17 – 31 Mar
8-10 wk
26 May
0 wk
8 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
16 Mar – 13 Apr
6 Jun
8-12 wk
8 Jun
1 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
6 – 20 Apr
11 May
6-8 wk
1 Jun
22 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
6 Apr
8-10 wk
28 May
1 Jun
0 wk
Love in a mist
Nigella damascena
26 May
23 Jun
0 wk
27 May
13 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
31 Mar – 14 Apr
2 May
6-8 wk
26 May
13 Jun
0 wk
27 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
5 Mar – 2 Apr
6 Apr
8-12 wk
28 May
1 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
3 – 31 Mar
17 Mar
8-12 wk
26 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
9 Mar – 6 Apr
11 Apr
8-12 wk
1 Jun
6 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
6 – 20 Apr
25 Apr
6-8 wk
1 Jun
6 Jun
1 wk after
Corn poppy
Papaver rhoeas
26 May
8 Jul
0 wk
27 May
28 Jun
0 wk
Snapdragon
Antirrhinum majus
3 – 31 Mar
3 May
8-12 wk
26 May
28 Jun
0 wk
5 Jun
18 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
23 Mar – 6 Apr
8 May
8-10 wk
1 Jun
3 Jul
1 wk after
Sweet pea
Lathyrus odoratus
31 Mar – 21 Apr
27 May
5-8 wk
26 May
1 Jul
0 wk
Stock
Matthiola incana
31 Mar – 14 Apr
27 May
6-8 wk
26 May
8 Jul
0 wk
8 Jun
28 Jun
2 wk after
Wormwood
Artemisia absinthium
31 Mar – 14 Apr
30 Apr
6-8 wk
26 May
11 Jun
0 wk
8 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
20 Apr – 4 May
4 May
4-6 wk
1 Jun
1 Jun
1 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Mar
16 May
8-10 wk
26 May
11 Jul
0 wk
5 Jun
1 Jul
1 wk after
Petunia
Petunia
Fleece
9 Mar – 6 Apr
17 Apr
8-12 wk
1 Jun
12 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Apr
20 Apr
6-8 wk
28 May
1 Jun
0 wk
8 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
20 Apr – 4 May
19 May
4-6 wk
1 Jun
16 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
27 Apr – 11 May
26 May
3-5 wk
1 Jun
16 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
20 Apr – 4 May
20 May
4-6 wk
1 Jun
17 Jun
1 wk after
20 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
16 Mar – 13 Apr
11 May
8-12 wk
8 Jun
6 Jul
2 wk after
Bee balm
Monarda didyma
3 – 31 Mar
13 Apr
8-12 wk
26 May
8 Jun
0 wk
20 Jun
4 wk after
Yarrow
Achillea millefolium
31 Mar – 14 Apr
31 Mar
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Safflower
Carthamus tinctorius
26 May
11 Jun
0 wk
27 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
0 wk
10 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
14 – 28 Apr
31 May
4-6 wk
26 May
28 Jun
0 wk
8 Jun
18 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
9 – 23 Mar
19 Mar
10-12 wk
1 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
4 – 11 May
6 Jun
3-4 wk
1 Jun
27 Jun
1 wk after
8 Jun
17 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
6 – 20 Apr
26 May
6-8 wk
1 Jun
7 Jul
1 wk after
20 Jun
27 Jun
4 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
25 Apr
6-8 wk
1 Jun
6 Jun
1 wk after
8 Jul
6 wk after
Hollyhock
Alcea rosea
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Mar
13 Apr
8-12 wk
26 May
8 Jun
0 wk
20 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
6 – 20 Apr
11 May
6-8 wk
1 Jun
22 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
25 Apr
6-8 wk
28 May
6 Jun
0 wk
8 Jul
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
3 Apr
8-10 wk
26 May
29 May
0 wk
20 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
23 Mar – 20 Apr
5 May
6-10 wk
1 Jun
16 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
26 May
7 Jul
0 wk
27 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
23 Mar – 6 Apr
26 Apr
8-10 wk
1 Jun
21 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
31 Mar – 14 Apr
30 Apr
6-8 wk
26 May
11 Jun
0 wk
8 Jun
2 wk after