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Method
Rel. frost
Last spring frost (0°C) 25 May Frost 3 of 4 years · 20 years of data
Frost-free season 88 days 25 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)
6 – 20 Apr
11 Jun
5-7 wk
25 May
16 Jul
0 wk
26 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
23 Jun
4-6 wk
25 May
21 Jul
0 wk
26 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
25 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
3 – 10 May
21 May
3-4 wk
31 May
11 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
26 Apr – 3 May
25 May
4-5 wk
31 May
22 Jun
1 wk after
7 Jun
12 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
5 – 12 Jun
3-4 wk
3 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
2 – 30 Mar
17 Mar
8-12 wk
25 May
0 wk
31 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
0 wk
26 May
0 wk
Maize
Zea mays
Greenhouse
27 Apr – 4 May
11 May
3-4 wk
25 May
1 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
7 Jun
3-4 wk
27 May
28 Jun
0 wk
7 Jun
18 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
22 Jun
0 wk
25 May
12 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
25 May
1 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
28 Apr
4-6 wk
4 Jun
1 wk after
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
7 Jun
5-7 wk
25 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
10 – 17 May
26 May
3-4 wk
7 Jun
16 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
9 May
3-4 wk
27 May
30 May
0 wk
7 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
26 Jun
3-4 wk
25 May
17 Jul
0 wk
26 May
7 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
13 May
2-4 wk
25 May
27 May
0 wk
25 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
0 wk
26 May
0 wk
Spinach
Spinacia oleracea
27 Apr – 4 May
18 Jul
3-4 wk
25 May
8 Aug
0 wk
22 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
30 Mar – 13 Apr
20 Apr
6-8 wk
25 May
1 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
3 – 17 May
28 May
2-4 wk
31 May
11 Jun
1 wk after
19 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
11 Jun
3-4 wk
25 May
2 Jul
0 wk
26 May
22 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
19 Apr – 3 May
21 May
4-6 wk
31 May
18 Jun
1 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
7 May
8-10 wk
25 May
2 Jul
0 wk
19 Jun
22 Jun
4 wk after
Dill
Anethum graveolens
26 May
28 Jun
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
30 May
6-8 wk
25 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
16 May
8-12 wk
25 May
11 Jul
0 wk
19 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
25 May
18 Jul
0 wk
7 Jun
8 Jul
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
1 May
8-10 wk
27 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
16 – 30 Mar
6 May
8-10 wk
25 May
1 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
20 May
6-8 wk
25 May
1 Jul
0 wk
19 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
20 May
6-8 wk
25 May
1 Jul
0 wk
26 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
16 Feb – 16 Mar
18 Mar
10-14 wk
25 May
27 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
3 – 10 May
28 May
3-4 wk
31 May
18 Jun
1 wk after
Cornflower
Centaurea cyanus
25 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Statice
Limonium sinuatum
Fleece
22 Mar – 5 Apr
15 Apr
8-10 wk
31 May
10 Jun
1 wk after
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
5 – 19 Apr
29 Apr
6-8 wk
31 May
10 Jun
1 wk after
14 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Apr
27 Apr
6-8 wk
5 Jun
8 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Apr – 22 May
11 May
4-8 wk
19 Jun
4 wk after
19 Jun
4 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
7 Jun
2 wk after
Busy lizzie
Impatiens walleriana
3 Apr – 1 May
22 May
8-12 wk
26 Jun
17 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
5 – 19 Apr
9 May
6-8 wk
31 May
20 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
4-6 wk
7 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
16 – 30 Mar
7 Apr
8-10 wk
25 May
2 Jun
0 wk
Love in a mist
Nigella damascena
25 May
17 Jun
0 wk
26 May
7 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
0 wk
26 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
2 – 30 Mar
7 Apr
8-12 wk
25 May
2 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
2 – 30 Mar
15 Mar
8-12 wk
25 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
8 Mar – 5 Apr
13 Apr
8-12 wk
31 May
8 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
5 – 19 Apr
27 Apr
6-8 wk
31 May
8 Jun
1 wk after
Corn poppy
Papaver rhoeas
25 May
2 Jul
0 wk
26 May
22 Jun
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
27 Apr
8-12 wk
25 May
22 Jun
0 wk
4 Jun
12 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
29 Mar – 12 Apr
25 Apr
8-10 wk
7 Jun
20 Jun
2 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
27 May
5-8 wk
25 May
1 Jul
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
21 May
6-8 wk
25 May
2 Jul
0 wk
7 Jun
22 Jun
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
19 Apr – 3 May
6 May
4-6 wk
31 May
3 Jun
1 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
16 May
8-10 wk
25 May
11 Jul
0 wk
4 Jun
1 Jul
1 wk after
Petunia
Petunia
Fleece
8 Mar – 5 Apr
15 Apr
8-12 wk
31 May
10 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
Fleece
30 Mar – 13 Apr
21 Apr
6-8 wk
25 May
2 Jun
0 wk
19 Jun
4 wk after
Common zinnia
Zinnia elegans
Fleece
19 Apr – 3 May
21 May
4-6 wk
31 May
18 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
26 Apr – 10 May
28 May
3-5 wk
31 May
18 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
19 Apr – 3 May
22 May
4-6 wk
31 May
19 Jun
1 wk after
19 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
15 Mar – 12 Apr
13 May
8-12 wk
7 Jun
8 Jul
2 wk after
Bee balm
Monarda didyma
2 – 30 Mar
7 Apr
8-12 wk
25 May
2 Jun
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
31 Mar
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
9 Jun
0 wk
26 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
20 May
6-8 wk
25 May
1 Jul
0 wk
9 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
25 May
4-6 wk
25 May
22 Jun
0 wk
7 Jun
12 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
8 – 22 Mar
21 Mar
10-12 wk
31 May
1 wk after
Sunflower
Helianthus annuus
Fleece
3 – 10 May
26 May
3-4 wk
31 May
16 Jun
1 wk after
7 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
5 – 19 Apr
15 May
6-8 wk
31 May
26 Jun
1 wk after
19 Jun
4 wk after
Annual phlox
Phlox drummondii
5 – 19 Apr
25 Apr
6-8 wk
31 May
6 Jun
1 wk after
7 Jul
6 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
7 Apr
8-12 wk
25 May
2 Jun
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
5 – 19 Apr
9 May
6-8 wk
31 May
20 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
16 Apr
6-8 wk
27 May
28 May
0 wk
7 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
28 Mar
8-10 wk
25 May
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
22 Mar – 19 Apr
7 May
6-10 wk
31 May
18 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
25 May
26 Jun
0 wk
26 May
16 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
22 Mar – 5 Apr
13 Apr
8-10 wk
31 May
8 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
7 Jun
2 wk after