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Method
Rel. frost
Last spring frost (0°C) 31 May Frost 3 of 4 years · 20 years of data
Frost-free season 84 days 31 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)
12 – 26 Apr
13 Jun
5-7 wk
31 May
18 Jul
0 wk
1 Jun
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
19 Apr – 3 May
25 Jun
4-6 wk
31 May
23 Jul
0 wk
1 Jun
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
14 Mar – 11 Apr
8-12 wk
6 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Apr
8 Jun
5-7 wk
31 May
13 Jul
0 wk
31 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
9 – 16 May
29 May
3-4 wk
6 Jun
19 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
9 – 16 May
19 May
4-5 wk
13 Jun
16 Jun
2 wk after
25 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 Jun
3-4 wk
9 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
8 Mar – 5 Apr
27 Mar
8-12 wk
31 May
0 wk
31 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Jun
0 wk
1 Jun
0 wk
Maize
Zea mays
Greenhouse
3 – 10 May
19 May
3-4 wk
31 May
9 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
15 Jun
3-4 wk
2 Jun
6 Jul
0 wk
13 Jun
26 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 May
27 Jun
0 wk
31 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Apr
8 Jun
5-7 wk
31 May
13 Jul
0 wk
31 May
3 Jul
0 wk
Potato
Solanum tuberosum
29 Apr – 13 May
6 May
4-6 wk
10 Jun
1 wk after
10 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Apr
12 Jun
5-7 wk
31 May
17 Jul
0 wk
1 Jun
7 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
16 – 23 May
3 Jun
3-4 wk
13 Jun
24 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
9 May
3-4 wk
2 Jun
0 wk
13 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Apr – 3 May
20 Jun
4-6 wk
31 May
18 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 May
1 Jul
3-4 wk
31 May
22 Jul
0 wk
1 Jun
12 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Apr – 3 May
20 Jun
4-6 wk
31 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 May
16 May
2-4 wk
31 May
0 wk
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Jun
0 wk
1 Jun
0 wk
Spinach
Spinacia oleracea
3 – 10 May
22 Jul
3-4 wk
31 May
12 Aug
0 wk
28 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
25 Jun – 9 Jul
4-6 wk
6 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
5 – 19 Apr
28 Apr
6-8 wk
31 May
9 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
9 – 23 May
5 Jun
2-4 wk
6 Jun
19 Jun
1 wk after
25 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Apr – 3 May
20 Jun
4-6 wk
31 May
18 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 May
16 Jun
3-4 wk
31 May
7 Jul
0 wk
1 Jun
27 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
Fleece
2 – 16 May
12 May
4-6 wk
13 Jun
2 wk after
Lemon balm
Melissa officinalis
22 Mar – 5 Apr
12 May
8-10 wk
31 May
7 Jul
0 wk
25 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
1 Jun
6 Jul
0 wk
Wild chives
Allium schoenoprasum
5 – 19 Apr
1 Jun
6-8 wk
31 May
13 Jul
0 wk
1 Jun
3 Jul
0 wk
Spearmint
Mentha spicata
8 Mar – 5 Apr
18 May
8-12 wk
31 May
13 Jul
0 wk
25 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
31 May
26 Jul
0 wk
13 Jun
16 Jul
2 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
3 May
8-10 wk
2 Jun
28 Jun
0 wk
Common thyme
Thymus vulgaris
22 Mar – 5 Apr
8 May
8-10 wk
31 May
3 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Apr
22 May
6-8 wk
31 May
3 Jul
0 wk
25 Jun
4 wk after
Parsley
Petroselinum crispum
5 – 19 Apr
22 May
6-8 wk
31 May
3 Jul
0 wk
1 Jun
23 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
22 Feb – 22 Mar
26 Mar
10-14 wk
31 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
Fleece
16 – 23 May
19 May
3-4 wk
13 Jun
2 wk after
Cornflower
Centaurea cyanus
31 May
13 Jul
0 wk
1 Jun
3 Jul
0 wk
Statice
Limonium sinuatum
4 – 18 Apr
12 Apr
8-10 wk
13 Jun
2 wk after
Sweet William
Dianthus barbatus
5 – 19 Apr
6-8 wk
31 May
0 wk
10 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
18 Apr – 2 May
26 Apr
6-8 wk
13 Jun
2 wk after
6 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Apr
1 May
6-8 wk
11 Jun
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
15 May
4-8 wk
25 Jun
4 wk after
25 Jun
4 wk after
Foxglove
Digitalis purpurea
22 Mar – 5 Apr
8-10 wk
31 May
0 wk
13 Jun
2 wk after
Busy lizzie
Impatiens walleriana
9 Apr – 7 May
30 May
8-12 wk
2 Jul
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
18 Apr – 2 May
6 May
6-8 wk
13 Jun
17 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
2 – 16 May
4-6 wk
13 Jun
2 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
1 Apr
8-10 wk
2 Jun
0 wk
Love in a mist
Nigella damascena
31 May
22 Jun
0 wk
1 Jun
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
11 – 25 Apr
26 Apr
6-8 wk
6 Jun
7 Jun
1 wk after
20 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
1 Apr
8-12 wk
2 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
8 Mar – 5 Apr
19 Mar
8-12 wk
31 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
14 Mar – 11 Apr
17 Apr
8-12 wk
6 Jun
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
11 – 25 Apr
1 May
6-8 wk
6 Jun
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
31 May
7 Jul
0 wk
1 Jun
27 Jun
0 wk
Snapdragon
Antirrhinum majus
8 Mar – 5 Apr
2 May
8-12 wk
31 May
27 Jun
0 wk
10 Jun
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
4 – 18 Apr
2 May
8-10 wk
13 Jun
27 Jun
2 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Apr
29 May
5-8 wk
31 May
3 Jul
0 wk
Stock
Matthiola incana
5 – 19 Apr
26 May
6-8 wk
31 May
7 Jul
0 wk
13 Jun
27 Jun
2 wk after
Wormwood
Artemisia absinthium
5 – 19 Apr
2 May
6-8 wk
31 May
13 Jun
0 wk
13 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
25 Apr – 9 May
10 May
4-6 wk
6 Jun
7 Jun
1 wk after
Garden pansy
Viola × wittrockiana
22 Mar – 5 Apr
18 May
8-10 wk
31 May
13 Jul
0 wk
10 Jun
3 Jul
1 wk after
Petunia
Petunia
21 Mar – 18 Apr
12 Apr
8-12 wk
13 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
15 Apr
6-8 wk
2 Jun
0 wk
13 Jul
6 wk after
Common zinnia
Zinnia elegans
2 – 16 May
12 May
4-6 wk
13 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
9 – 23 May
19 May
3-5 wk
13 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 May
15 May
4-6 wk
13 Jun
2 wk after
13 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
21 Mar – 18 Apr
17 May
8-12 wk
13 Jun
12 Jul
2 wk after
Bee balm
Monarda didyma
8 Mar – 5 Apr
12 Apr
8-12 wk
31 May
7 Jun
0 wk
25 Jun
4 wk after
Yarrow
Achillea millefolium
5 – 19 Apr
6-8 wk
31 May
0 wk
13 Jun
2 wk after
Safflower
Carthamus tinctorius
31 May
13 Jun
0 wk
1 Jun
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Apr
22 May
6-8 wk
31 May
3 Jul
0 wk
15 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
19 Apr – 3 May
30 May
4-6 wk
31 May
27 Jun
0 wk
13 Jun
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
14 – 28 Mar
23 Mar
10-12 wk
6 Jun
1 wk after
Sunflower
Helianthus annuus
16 – 23 May
18 May
3-4 wk
13 Jun
2 wk after
25 Jun
4 wk after
China aster
Callistephus chinensis
18 Apr – 2 May
7 May
6-8 wk
13 Jun
18 Jun
2 wk after
13 Jul
6 wk after
Annual phlox
Phlox drummondii
11 – 25 Apr
6 May
6-8 wk
6 Jun
17 Jun
1 wk after
13 Jul
6 wk after
Hollyhock
Alcea rosea
5 – 19 Apr
6-8 wk
31 May
0 wk
13 Jun
2 wk after
Alpine delphinium
Delphinium elatum
8 Mar – 5 Apr
12 Apr
8-12 wk
31 May
7 Jun
0 wk
25 Jun
4 wk after
African marigold
Tagetes erecta
18 Apr – 2 May
6 May
6-8 wk
13 Jun
17 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
27 Apr
6-8 wk
2 Jun
8 Jun
0 wk
13 Jul
6 wk after
Wood sage
Salvia nemorosa
22 Mar – 5 Apr
2 Apr
8-10 wk
31 May
0 wk
25 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
4 Apr – 2 May
28 Apr
6-10 wk
13 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
31 May
4 Jul
0 wk
1 Jun
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
28 Mar – 11 Apr
21 Apr
8-10 wk
6 Jun
16 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Apr
2 May
6-8 wk
31 May
13 Jun
0 wk
13 Jun
2 wk after