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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 89 days 27 May – 24 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
13 Jun
5-7 wk
27 May
18 Jul
0 wk
28 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
25 Jun
4-6 wk
27 May
23 Jul
0 wk
28 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
15 Mar – 12 Apr
22 Mar
8-12 wk
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
8 Jun
5-7 wk
27 May
13 Jul
0 wk
27 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
10 – 17 May
29 May
3-4 wk
7 Jun
19 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
12 – 19 May
20 May
4-5 wk
16 Jun
17 Jun
3 wk after
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
4 Mar – 1 Apr
21 Mar
8-12 wk
27 May
0 wk
2 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
28 May
0 wk
28 May
0 wk
Maize
Zea mays
Fleece
10 – 17 May
3-4 wk
7 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
16 Jun
3-4 wk
2 Jun
7 Jul
1 wk after
9 Jun
27 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
27 Jun
0 wk
27 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
8 Jun
5-7 wk
27 May
13 Jul
0 wk
27 May
3 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
10 May
4-6 wk
6 Jun
7 Jun
1 wk after
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
12 Jun
5-7 wk
27 May
17 Jul
0 wk
28 May
7 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
19 – 26 May
3 Jun
3-4 wk
16 Jun
24 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
17 May
3-4 wk
2 Jun
7 Jun
1 wk after
9 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
1 Jul
3-4 wk
27 May
22 Jul
0 wk
28 May
12 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
18 May
2-4 wk
27 May
1 Jun
0 wk
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
28 May
0 wk
28 May
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
22 Jul
3-4 wk
27 May
12 Aug
0 wk
24 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
12 – 26 Apr
15 Apr
6-8 wk
7 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
10 – 24 May
5 Jun
2-4 wk
7 Jun
19 Jun
2 wk after
21 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
16 Jun
3-4 wk
27 May
7 Jul
0 wk
28 May
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
Greenhouse
26 Apr – 10 May
25 May
4-6 wk
7 Jun
22 Jun
2 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
12 May
8-10 wk
27 May
7 Jul
0 wk
21 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
28 May
7 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
1 Jun
6-8 wk
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
18 May
8-12 wk
27 May
13 Jul
0 wk
21 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
27 May
27 Jul
0 wk
9 Jun
17 Jul
2 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
3 May
8-10 wk
2 Jun
28 Jun
1 wk after
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
8 May
8-10 wk
27 May
3 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
0 wk
21 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
0 wk
28 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
11 Mar
10-14 wk
2 Jun
1 wk after

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
10 – 17 May
1 Jun
3-4 wk
7 Jun
22 Jun
2 wk after
Cornflower
Centaurea cyanus
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Statice
Limonium sinuatum
Fleece
29 Mar – 12 Apr
24 Apr
8-10 wk
7 Jun
19 Jun
2 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
12 – 26 Apr
8 May
6-8 wk
7 Jun
19 Jun
2 wk after
16 Jul
7 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
26 Apr – 24 May
15 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
7 Apr – 5 May
30 May
8-12 wk
30 Jun
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
8 May
6-8 wk
16 Jun
19 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 May
4-6 wk
16 Jun
3 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
2 Apr
8-10 wk
2 Jun
1 wk after
Love in a mist
Nigella damascena
27 May
22 Jun
0 wk
28 May
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
12 – 26 Apr
28 Apr
6-8 wk
7 Jun
9 Jun
2 wk after
16 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
2 Apr
8-12 wk
2 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
8 Mar – 5 Apr
19 Mar
8-12 wk
31 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
15 Mar – 12 Apr
17 Apr
8-12 wk
7 Jun
12 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
12 – 26 Apr
1 May
6-8 wk
7 Jun
12 Jun
2 wk after
Corn poppy
Papaver rhoeas
27 May
7 Jul
0 wk
28 May
27 Jun
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
2 May
8-12 wk
27 May
27 Jun
0 wk
6 Jun
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
7 – 21 Apr
4 May
8-10 wk
16 Jun
29 Jun
3 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
29 May
5-8 wk
27 May
3 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
26 May
6-8 wk
27 May
7 Jul
0 wk
9 Jun
27 Jun
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
2 May
6-8 wk
27 May
13 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
26 Apr – 10 May
10 May
4-6 wk
7 Jun
7 Jun
2 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
18 May
8-10 wk
27 May
13 Jul
0 wk
6 Jun
3 Jul
1 wk after
Petunia
Petunia
Fleece
15 Mar – 12 Apr
24 Apr
8-12 wk
7 Jun
19 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
16 Apr
6-8 wk
2 Jun
1 wk after
9 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
26 Apr – 10 May
25 May
4-6 wk
7 Jun
22 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
3 – 17 May
1 Jun
3-5 wk
7 Jun
22 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 May
15 May
4-6 wk
16 Jun
3 wk after
9 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
24 Mar – 21 Apr
17 May
8-12 wk
16 Jun
12 Jul
3 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
12 Apr
8-12 wk
27 May
7 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
2 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
13 Jun
0 wk
28 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
0 wk
11 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
30 May
4-6 wk
27 May
27 Jun
0 wk
9 Jun
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
15 – 29 Mar
21 Mar
10-12 wk
7 Jun
2 wk after
Sunflower
Helianthus annuus
Fleece
10 – 17 May
3 Jun
3-4 wk
7 Jun
24 Jun
2 wk after
9 Jun
14 Jun
2 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
8 May
6-8 wk
16 Jun
19 Jun
3 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
8 May
6-8 wk
7 Jun
19 Jun
2 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
12 Apr
8-12 wk
27 May
7 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
8 May
6-8 wk
16 Jun
19 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
28 Apr
6-8 wk
2 Jun
9 Jun
1 wk after
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
2 Apr
8-10 wk
27 May
28 May
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
29 Mar – 26 Apr
11 May
6-10 wk
7 Jun
22 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
27 May
4 Jul
0 wk
28 May
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
29 Mar – 12 Apr
22 Apr
8-10 wk
7 Jun
17 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
2 May
6-8 wk
27 May
13 Jun
0 wk
9 Jun
2 wk after