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Method
Rel. frost
Last spring frost (0°C) 27 May Normal year · 20 years of data
Frost-free season 115 days 27 May – 19 Sep
Probability that frost is over

50% = 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
8 Jun
5-7 wk
27 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
20 Jun
4-6 wk
27 May
18 Jul
0 wk
28 May
8 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
10 Mar – 7 Apr
8-12 wk
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
3 Jun
5-7 wk
27 May
8 Jul
0 wk
27 May
28 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
5 – 12 May
3-4 wk
2 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
31 May
4-5 wk
9 Jun
28 Jun
2 wk after
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
4 Mar – 1 Apr
20 Mar
8-12 wk
27 May
0 wk
27 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
24 May
25 May
0 wk
24 May
0 wk
Maize
Zea mays
Season too short
29 Apr – 6 May
3-4 wk
27 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
27 Jun
3-4 wk
29 May
18 Jul
0 wk
9 Jun
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
28 Jun
0 wk
27 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
3 Jun
5-7 wk
27 May
8 Jul
0 wk
27 May
28 Jun
0 wk
Potato
Solanum tuberosum
Fleece
16 – 30 Apr
11 May
4-6 wk
28 May
8 Jun
0 wk
28 May
29 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
13 Jun
5-7 wk
27 May
18 Jul
0 wk
28 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
5 – 12 May
16 Jun
3-4 wk
2 Jun
7 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
29 Apr – 6 May
9 May
3-4 wk
27 May
30 May
0 wk
2 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
15 Jun
4-6 wk
27 May
13 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
2 Jul
3-4 wk
27 May
23 Jul
0 wk
28 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
15 Jun
4-6 wk
27 May
13 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
23 Apr – 7 May
19 May
2-4 wk
21 May
2 Jun
1 wk before
21 May
23 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
24 May
25 May
0 wk
24 May
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
17 Jul
3-4 wk
27 May
7 Aug
0 wk
24 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
1 – 15 Apr
6-8 wk
27 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
29 Apr – 13 May
18 Jun
2-4 wk
27 May
2 Jul
0 wk
9 Jun
22 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
15 Jun
4-6 wk
27 May
13 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
17 Jun
3-4 wk
27 May
8 Jul
0 wk
28 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
21 Apr – 5 May
25 May
4-6 wk
2 Jun
22 Jun
1 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
13 May
8-10 wk
27 May
8 Jul
0 wk
21 Jun
28 Jun
4 wk after
Dill
Anethum graveolens
28 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
27 May
6-8 wk
27 May
8 Jul
0 wk
28 May
28 Jun
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
13 May
8-12 wk
27 May
8 Jul
0 wk
21 Jun
28 Jun
4 wk after
Coriander
Coriandrum sativum
27 May
7 Aug
0 wk
9 Jun
28 Jul
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
28 Apr
8-10 wk
29 May
23 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
3 May
8-10 wk
27 May
28 Jun
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
0 wk
21 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
0 wk
28 May
18 Jun
0 wk
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
30 Mar
10-14 wk
29 May
8 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
5 – 12 May
1 Jun
3-4 wk
2 Jun
22 Jun
1 wk after
Cornflower
Centaurea cyanus
27 May
8 Jul
0 wk
28 May
28 Jun
0 wk
Statice
Limonium sinuatum
Fleece
24 Mar – 7 Apr
24 Apr
8-10 wk
2 Jun
19 Jun
1 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
7 – 21 Apr
8 May
6-8 wk
2 Jun
19 Jun
1 wk after
16 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
1 May
6-8 wk
7 Jun
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
7 Apr – 5 May
31 May
4-8 wk
2 Jun
28 Jun
1 wk after
2 Jun
18 Jun
1 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
Fleece
17 Mar – 14 Apr
12 Jun
8-12 wk
9 Jun
7 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
13 Apr
8-10 wk
29 May
8 Jun
0 wk
Love in a mist
Nigella damascena
27 May
23 Jun
0 wk
28 May
13 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
1 – 15 Apr
7 May
6-8 wk
27 May
18 Jun
0 wk
28 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
13 Apr
8-12 wk
29 May
8 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
4 Mar – 1 Apr
14 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
10 Mar – 7 Apr
17 Apr
8-12 wk
2 Jun
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
7 – 21 Apr
1 May
6-8 wk
2 Jun
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
27 May
8 Jul
0 wk
28 May
28 Jun
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
3 May
8-12 wk
27 May
28 Jun
0 wk
6 Jun
18 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
4 May
8-10 wk
9 Jun
29 Jun
2 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
24 May
5-8 wk
27 May
28 Jun
0 wk
Stock
Matthiola incana
1 – 15 Apr
27 May
6-8 wk
27 May
8 Jul
0 wk
9 Jun
28 Jun
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
27 Apr
6-8 wk
27 May
8 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
21 Apr – 5 May
10 May
4-6 wk
2 Jun
7 Jun
1 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
13 May
8-10 wk
27 May
8 Jul
0 wk
6 Jun
28 Jun
1 wk after
Petunia
Petunia
Fleece
10 Mar – 7 Apr
24 Apr
8-12 wk
2 Jun
19 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
27 Apr
6-8 wk
29 May
8 Jun
0 wk
9 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
21 Apr – 5 May
25 May
4-6 wk
2 Jun
22 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
28 Apr – 12 May
1 Jun
3-5 wk
2 Jun
22 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
21 Apr – 5 May
29 May
4-6 wk
2 Jun
26 Jun
1 wk after
21 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
17 Mar – 14 Apr
17 May
8-12 wk
9 Jun
12 Jul
2 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
13 Apr
8-12 wk
27 May
8 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
8 Jun
0 wk
28 May
29 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
0 wk
11 May
18 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
31 May
4-6 wk
27 May
28 Jun
0 wk
9 Jun
18 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
10 – 24 Mar
28 Mar
10-12 wk
2 Jun
6 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
7 Jun
3-4 wk
9 Jun
28 Jun
2 wk after
21 Jun
4 wk after
China aster
Callistephus chinensis
14 – 28 Apr
27 May
6-8 wk
9 Jun
8 Jul
2 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
Fleece
1 – 15 Apr
18 May
6-8 wk
27 May
29 Jun
0 wk
21 Jun
4 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
13 Apr
8-12 wk
27 May
8 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
17 May
6-8 wk
29 May
28 Jun
0 wk
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
3 Apr
8-10 wk
27 May
29 May
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
24 Mar – 21 Apr
11 May
6-10 wk
2 Jun
22 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
27 May
8 Jul
0 wk
28 May
28 Jun
0 wk
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
30 Apr
8-10 wk
9 Jun
25 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
27 Apr
6-8 wk
27 May
8 Jun
0 wk
9 Jun
2 wk after