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Method
Rel. frost
Last spring frost (0°C) 27 May Frost 1 of 10 years · 20 years of data
Frost-free season 121 days 27 May – 25 Sep
Probability that frost is over

90% = 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
12 Jun
5-7 wk
27 May
17 Jul
0 wk
28 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
24 Jun
4-6 wk
27 May
22 Jul
0 wk
28 May
12 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
7 Jun
5-7 wk
27 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
5 – 12 May
9 May
3-4 wk
2 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
24 – 31 May
4 Jun
4-5 wk
28 Jun
2 Jul
5 wk after
9 Jul
6 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)
4 Mar – 1 Apr
28 Mar
8-12 wk
27 May
0 wk
9 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Maize
Zea mays
Greenhouse
29 Apr – 6 May
29 Apr
3-4 wk
27 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
1 Jul
3-4 wk
29 May
22 Jul
0 wk
9 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
2 Jul
0 wk
27 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
7 Jun
5-7 wk
27 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
25 May
4-6 wk
6 Jun
22 Jun
1 wk after
6 Jun
12 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
17 Jun
5-7 wk
27 May
22 Jul
0 wk
28 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
14 May
3-4 wk
9 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
10 Jun
3-4 wk
29 May
1 Jul
0 wk
9 Jun
21 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
19 Jun
4-6 wk
27 May
17 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
6 Jul
3-4 wk
27 May
27 Jul
0 wk
28 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
19 Jun
4-6 wk
27 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
29 May
2-4 wk
27 May
12 Jun
0 wk
27 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
21 Jul
3-4 wk
27 May
11 Aug
0 wk
24 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
1 – 15 Apr
8 Apr
6-8 wk
27 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
5 – 19 May
16 May
2-4 wk
2 Jun
1 wk after
21 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
19 Jun
4-6 wk
27 May
17 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
21 Jun
3-4 wk
27 May
12 Jul
0 wk
28 May
2 Jul
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
29 Apr
4-6 wk
2 Jun
1 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
17 May
8-10 wk
27 May
12 Jul
0 wk
21 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
28 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
31 May
6-8 wk
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
17 May
8-12 wk
27 May
12 Jul
0 wk
21 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
27 May
11 Aug
0 wk
9 Jun
1 Aug
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
2 May
8-10 wk
29 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
7 May
8-10 wk
27 May
2 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
0 wk
21 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
0 wk
28 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
3 Apr
10-14 wk
29 May
12 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
6 May
3-4 wk
2 Jun
1 wk after
Cornflower
Centaurea cyanus
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
24 Mar – 7 Apr
1 Apr
8-10 wk
2 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
15 Apr
6-8 wk
2 Jun
1 wk after
16 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
3 – 17 Apr
26 Apr
6-8 wk
29 May
7 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
14 Apr – 12 May
10 May
4-8 wk
9 Jun
2 wk after
9 Jun
2 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
5 Apr – 3 May
10 May
8-12 wk
28 Jun
5 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
7 – 21 Apr
25 Apr
6-8 wk
2 Jun
6 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
17 Apr
8-10 wk
29 May
12 Jun
0 wk
Love in a mist
Nigella damascena
27 May
27 Jun
0 wk
28 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
1 – 15 Apr
21 Apr
6-8 wk
27 May
2 Jun
0 wk
28 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
17 Apr
8-12 wk
29 May
12 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
10 Mar – 7 Apr
18 Mar
8-12 wk
2 Jun
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
10 Mar – 7 Apr
22 Mar
8-12 wk
2 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
7 – 21 Apr
6-8 wk
2 Jun
1 wk after
Corn poppy
Papaver rhoeas
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
7 May
8-12 wk
27 May
2 Jul
0 wk
6 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
11 Apr
8-10 wk
9 Jun
2 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
28 May
5-8 wk
27 May
2 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
31 May
6-8 wk
27 May
12 Jul
0 wk
9 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
21 Apr – 5 May
4-6 wk
2 Jun
1 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
17 May
8-10 wk
27 May
12 Jul
0 wk
6 Jun
2 Jul
1 wk after
Petunia
Petunia
Fleece
10 Mar – 7 Apr
1 Apr
8-12 wk
2 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
1 May
6-8 wk
29 May
12 Jun
0 wk
9 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
21 Apr – 5 May
29 Apr
4-6 wk
2 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
28 Apr – 12 May
6 May
3-5 wk
2 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
21 Apr – 5 May
10 May
4-6 wk
2 Jun
7 Jun
1 wk after
21 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
17 Mar – 14 Apr
21 Apr
8-12 wk
9 Jun
16 Jun
2 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
17 Apr
8-12 wk
27 May
12 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
1 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
0 wk
11 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
4 Jun
4-6 wk
27 May
2 Jul
0 wk
9 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
10 – 24 Mar
10-12 wk
2 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
11 Jun
3-4 wk
9 Jun
2 Jul
2 wk after
21 Jun
22 Jun
4 wk after
China aster
Callistephus chinensis
14 – 28 Apr
31 May
6-8 wk
9 Jun
12 Jul
2 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
12 Apr
6-8 wk
2 Jun
1 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
17 Apr
8-12 wk
27 May
12 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
7 – 21 Apr
25 Apr
6-8 wk
2 Jun
6 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
21 May
6-8 wk
29 May
2 Jul
0 wk
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
7 Apr
8-10 wk
27 May
2 Jun
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
24 Mar – 21 Apr
15 Apr
6-10 wk
2 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
7 May
8-10 wk
9 Jun
2 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
0 wk
9 Jun
2 wk after