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Method
Rel. frost
Last spring frost (0°C) 22 Jun Frost 1 of 10 years · 20 years of data
Frost-free season 93 days 22 Jun – 23 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)
4 – 18 May
10 Jun
5-7 wk
22 Jun
15 Jul
0 wk
23 Jun
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 May
22 Jun
4-6 wk
22 Jun
20 Jul
0 wk
23 Jun
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
5 Apr – 3 May
8-12 wk
28 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 May
5 Jun
5-7 wk
22 Jun
10 Jul
0 wk
22 Jun
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
31 May – 7 Jun
3-4 wk
28 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
24 – 31 May
2 Jun
4-5 wk
28 Jun
30 Jun
1 wk after
5 Jul
2 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jul
3-4 wk
31 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
30 Mar – 27 Apr
8-12 wk
22 Jun
0 wk
22 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
13 Jun
1 wk before
13 Jun
1 wk before
Maize
Zea mays
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 May – 3 Jun
29 Jun
3-4 wk
24 Jun
20 Jul
0 wk
5 Jul
10 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 Jun
30 Jun
0 wk
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 May
5 Jun
5-7 wk
22 Jun
10 Jul
0 wk
22 Jun
30 Jun
0 wk
Potato
Solanum tuberosum
Season too short
8 – 22 May
19 May
4-6 wk
19 Jun
0 wk
19 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 May
15 Jun
5-7 wk
22 Jun
20 Jul
0 wk
23 Jun
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
31 May – 7 Jun
3-4 wk
28 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
25 May – 1 Jun
3-4 wk
22 Jun
0 wk
28 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 May
17 Jun
4-6 wk
22 Jun
15 Jul
0 wk
Lettuce
Lactuca sativa
25 May – 1 Jun
4 Jul
3-4 wk
22 Jun
25 Jul
0 wk
23 Jun
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 May
17 Jun
4-6 wk
22 Jun
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
9 – 23 May
27 May
2-4 wk
6 Jun
10 Jun
2 wk before
6 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
13 Jun
1 wk before
13 Jun
1 wk before
Spinach
Spinacia oleracea
25 May – 1 Jun
19 Jul
3-4 wk
22 Jun
9 Aug
0 wk
19 Jun
30 Jul
0 wk
Sweet potato
Ipomoea batatas
17 – 31 Jul
4-6 wk
28 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
27 Apr – 11 May
6-8 wk
22 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
25 May – 8 Jun
2-4 wk
22 Jun
0 wk
5 Jul
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 May
17 Jun
4-6 wk
22 Jun
15 Jul
0 wk
Garden pea
Pisum sativum
25 May – 1 Jun
19 Jun
3-4 wk
22 Jun
10 Jul
0 wk
23 Jun
30 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
Season too short
17 – 31 May
4-6 wk
28 Jun
1 wk after
Lemon balm
Melissa officinalis
13 – 27 Apr
15 May
8-10 wk
22 Jun
10 Jul
0 wk
17 Jul
4 wk after
Dill
Anethum graveolens
23 Jun
20 Jul
0 wk
Wild chives
Allium schoenoprasum
27 Apr – 11 May
29 May
6-8 wk
22 Jun
10 Jul
0 wk
23 Jun
30 Jun
0 wk
Spearmint
Mentha spicata
30 Mar – 27 Apr
15 May
8-12 wk
22 Jun
10 Jul
0 wk
17 Jul
4 wk after
Coriander
Coriandrum sativum
22 Jun
9 Aug
0 wk
5 Jul
30 Jul
2 wk after
Garden sage
Salvia officinalis
15 – 29 Apr
30 Apr
8-10 wk
24 Jun
25 Jun
0 wk
Common thyme
Thymus vulgaris
13 – 27 Apr
5 May
8-10 wk
22 Jun
30 Jun
0 wk
Oregano
Origanum vulgare
27 Apr – 11 May
19 May
6-8 wk
22 Jun
30 Jun
0 wk
17 Jul
4 wk after
Parsley
Petroselinum crispum
27 Apr – 11 May
19 May
6-8 wk
22 Jun
30 Jun
0 wk
23 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
16 Mar – 13 Apr
1 Apr
10-14 wk
22 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
Season too short
31 May – 7 Jun
3-4 wk
28 Jun
1 wk after
Cornflower
Centaurea cyanus
22 Jun
10 Jul
0 wk
23 Jun
30 Jun
0 wk
Statice
Limonium sinuatum
Season too short
13 – 27 Apr
8-10 wk
22 Jun
0 wk
Sweet William
Dianthus barbatus
27 Apr – 11 May
6-8 wk
22 Jun
0 wk
2 Jul
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
27 Apr – 11 May
6-8 wk
22 Jun
0 wk
24 Jul
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
27 Apr – 11 May
6 May
6-8 wk
22 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
3 – 31 May
20 May
4-8 wk
28 Jun
1 wk after
28 Jun
1 wk after
Foxglove
Digitalis purpurea
13 – 27 Apr
8-10 wk
22 Jun
0 wk
5 Jul
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
5 Apr – 3 May
27 May
8-12 wk
28 Jun
22 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
27 Apr – 11 May
6 May
6-8 wk
22 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
24 May – 7 Jun
4-6 wk
5 Jul
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
13 – 27 Apr
15 Apr
8-10 wk
22 Jun
0 wk
Love in a mist
Nigella damascena
22 Jun
25 Jun
0 wk
23 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
27 Apr – 11 May
6-8 wk
22 Jun
0 wk
24 Jul
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
30 Mar – 27 Apr
15 Apr
8-12 wk
22 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
30 Mar – 27 Apr
8-12 wk
22 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
5 Apr – 3 May
8-12 wk
28 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
3 – 17 May
6-8 wk
28 Jun
1 wk after
Corn poppy
Papaver rhoeas
22 Jun
10 Jul
0 wk
23 Jun
30 Jun
0 wk
Snapdragon
Antirrhinum majus
30 Mar – 27 Apr
5 May
8-12 wk
22 Jun
30 Jun
0 wk
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
Season too short
19 Apr – 3 May
22 Apr
8-10 wk
28 Jun
1 wk after
Sweet pea
Lathyrus odoratus
27 Apr – 18 May
26 May
5-8 wk
22 Jun
30 Jun
0 wk
Stock
Matthiola incana
27 Apr – 11 May
29 May
6-8 wk
22 Jun
10 Jul
0 wk
5 Jul
2 wk after
Wormwood
Artemisia absinthium
27 Apr – 11 May
29 Apr
6-8 wk
22 Jun
0 wk
5 Jul
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
17 – 31 May
4-6 wk
28 Jun
1 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Apr
15 May
8-10 wk
22 Jun
10 Jul
0 wk
2 Jul
1 wk after
Petunia
Petunia
Season too short
30 Mar – 27 Apr
12 Apr
8-12 wk
22 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
27 Apr – 11 May
29 Apr
6-8 wk
22 Jun
0 wk
17 Jul
4 wk after
Common zinnia
Zinnia elegans
Season too short
11 – 25 May
4-6 wk
22 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
24 May – 7 Jun
3-5 wk
28 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
11 – 25 May
20 May
4-6 wk
22 Jun
0 wk
5 Jul
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
12 Apr – 10 May
8-12 wk
5 Jul
2 wk after
Bee balm
Monarda didyma
30 Mar – 27 Apr
15 Apr
8-12 wk
22 Jun
0 wk
17 Jul
4 wk after
Yarrow
Achillea millefolium
27 Apr – 11 May
6-8 wk
22 Jun
0 wk
5 Jul
2 wk after
Safflower
Carthamus tinctorius
22 Jun
0 wk
23 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
27 Apr – 11 May
19 May
6-8 wk
22 Jun
30 Jun
0 wk
6 Jun
20 Jun
2 wk before
Bishop's flower
Ammi majus
11 – 25 May
2 Jun
4-6 wk
22 Jun
30 Jun
0 wk
5 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
5 – 19 Apr
10-12 wk
28 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
31 May – 7 Jun
9 Jun
3-4 wk
28 Jun
30 Jun
1 wk after
5 Jul
2 wk after
China aster
Callistephus chinensis
Fleece
3 – 17 May
29 May
6-8 wk
28 Jun
10 Jul
1 wk after
17 Jul
4 wk after
Annual phlox
Phlox drummondii
Greenhouse
27 Apr – 11 May
6 May
6-8 wk
22 Jun
0 wk
5 Jul
2 wk after
Hollyhock
Alcea rosea
27 Apr – 11 May
6-8 wk
22 Jun
0 wk
5 Jul
2 wk after
Alpine delphinium
Delphinium elatum
30 Mar – 27 Apr
15 Apr
8-12 wk
22 Jun
0 wk
17 Jul
4 wk after
African marigold
Tagetes erecta
Greenhouse
27 Apr – 11 May
6 May
6-8 wk
22 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
29 Apr – 13 May
17 May
6-8 wk
24 Jun
28 Jun
0 wk
4 Aug
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Apr
8-10 wk
22 Jun
0 wk
17 Jul
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
19 Apr – 17 May
6-10 wk
28 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
22 Jun
10 Jul
0 wk
23 Jun
30 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
19 Apr – 3 May
5 May
8-10 wk
28 Jun
30 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
27 Apr – 11 May
29 Apr
6-8 wk
22 Jun
0 wk
5 Jul
2 wk after