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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 3 of 4 years · 20 years of data
Frost-free season 89 days 28 May – 25 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)
9 – 23 Apr
13 Jun
5-7 wk
28 May
18 Jul
0 wk
29 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
25 Jun
4-6 wk
28 May
23 Jul
0 wk
29 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
24 Mar
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
8 Jun
5-7 wk
28 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 May
18 May
3-4 wk
10 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
18 May
4-5 wk
10 Jun
15 Jun
2 wk after
22 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
5 Mar – 2 Apr
26 Mar
8-12 wk
28 May
0 wk
3 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
2 Jun
0 wk
29 May
0 wk
Maize
Zea mays
Fleece
6 – 13 May
8 May
3-4 wk
3 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
14 Jun
3-4 wk
30 May
5 Jul
0 wk
10 Jun
25 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
24 Jun
0 wk
28 May
14 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
8 Jun
5-7 wk
28 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
16 May
4-6 wk
7 Jun
13 Jun
1 wk after
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
29 May
4 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
4 Jun
3-4 wk
10 Jun
25 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
23 May
3-4 wk
30 May
13 Jun
0 wk
10 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
28 Jun
3-4 wk
28 May
19 Jul
0 wk
29 May
9 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
24 May
2-4 wk
28 May
7 Jun
0 wk
28 May
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
2 Jun
0 wk
29 May
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
22 Jul
3-4 wk
28 May
12 Aug
0 wk
25 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
8 – 22 Apr
17 Apr
6-8 wk
3 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
25 May
2-4 wk
10 Jun
2 wk after
10 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
13 Jun
3-4 wk
28 May
4 Jul
0 wk
29 May
24 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
29 Apr – 13 May
13 May
4-6 wk
10 Jun
10 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
9 May
8-10 wk
28 May
4 Jul
0 wk
22 Jun
24 Jun
4 wk after
Dill
Anethum graveolens
29 May
5 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
1 Jun
6-8 wk
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
18 May
8-12 wk
28 May
13 Jul
0 wk
22 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
25 Jul
0 wk
10 Jun
15 Jul
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
3 May
8-10 wk
30 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
8 May
8-10 wk
28 May
3 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
22 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
29 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
19 Feb – 19 Mar
21 Mar
10-14 wk
28 May
30 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
Fleece
13 – 20 May
20 May
3-4 wk
10 Jun
10 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
15 Apr
8-10 wk
10 Jun
10 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
29 Apr
6-8 wk
10 Jun
10 Jun
2 wk after
3 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
6 May
6-8 wk
8 Jun
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
27 Apr – 25 May
20 May
4-8 wk
22 Jun
4 wk after
22 Jun
4 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
10 Jun
2 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
31 May
8-12 wk
29 Jun
26 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
9 May
6-8 wk
10 Jun
20 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
2 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
31 Mar
8-10 wk
30 May
0 wk
Love in a mist
Nigella damascena
28 May
19 Jun
0 wk
29 May
9 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
8 – 22 Apr
30 Apr
6-8 wk
3 Jun
11 Jun
1 wk after
17 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
31 Mar
8-12 wk
30 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
5 Mar – 2 Apr
19 Mar
8-12 wk
28 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
11 Mar – 8 Apr
22 Apr
8-12 wk
3 Jun
17 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
8 – 22 Apr
6 May
6-8 wk
3 Jun
17 Jun
1 wk after
Corn poppy
Papaver rhoeas
28 May
4 Jul
0 wk
29 May
24 Jun
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
29 Apr
8-12 wk
28 May
24 Jun
0 wk
7 Jun
14 Jun
1 wk after
Flossflower
Ageratum houstonianum
20 Apr – 4 May
25 Apr
8-10 wk
29 Jun
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
29 May
5-8 wk
28 May
3 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
10 Jun
24 Jun
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
15 May
4-6 wk
3 Jun
12 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
18 May
8-10 wk
28 May
13 Jul
0 wk
7 Jun
3 Jul
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
15 Apr
8-12 wk
10 Jun
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
14 Apr
6-8 wk
30 May
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
13 May
4-6 wk
10 Jun
10 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
20 May
3-5 wk
10 Jun
10 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
20 May
4-6 wk
10 Jun
17 Jun
2 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
6 Apr – 4 May
5 May
8-12 wk
29 Jun
30 Jun
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
9 Apr
8-12 wk
28 May
4 Jun
0 wk
22 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
2 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Safflower
Carthamus tinctorius
28 May
13 Jun
0 wk
29 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
12 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
27 May
4-6 wk
28 May
24 Jun
0 wk
10 Jun
14 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
25 Mar
10-12 wk
3 Jun
3 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
6 – 13 May
29 May
3-4 wk
3 Jun
19 Jun
1 wk after
10 Jun
2 wk after
China aster
Callistephus chinensis
15 – 29 Apr
2 May
6-8 wk
10 Jun
13 Jun
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
9 May
6-8 wk
3 Jun
20 Jun
1 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
9 Apr
8-12 wk
28 May
4 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
9 May
6-8 wk
10 Jun
20 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
22 Apr
6-8 wk
30 May
3 Jun
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
30 Mar
8-10 wk
28 May
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
29 Apr
6-10 wk
10 Jun
10 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
29 Jun
0 wk
29 May
19 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
25 Mar – 8 Apr
20 Apr
8-10 wk
3 Jun
15 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
0 wk
10 Jun
2 wk after