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Method
Rel. frost
Last spring frost (0°C) 10 Jun Frost 1 of 10 years · 20 years of data
Frost-free season 106 days 10 Jun – 24 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)
22 Apr – 6 May
13 Jun
5-7 wk
10 Jun
18 Jul
0 wk
11 Jun
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
29 Apr – 13 May
25 Jun
4-6 wk
10 Jun
23 Jul
0 wk
11 Jun
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
24 Mar – 21 Apr
8-12 wk
16 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Apr – 6 May
8 Jun
5-7 wk
10 Jun
13 Jul
0 wk
10 Jun
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
19 – 26 May
3-4 wk
16 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
7 – 14 Jun
4-5 wk
12 Jul
5 wk after
23 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 Jun
3-4 wk
19 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Mar – 15 Apr
29 Mar
8-12 wk
10 Jun
0 wk
23 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 Jun
13 Jun
0 wk
11 Jun
0 wk
Maize
Zea mays
Season too short
13 – 20 May
3-4 wk
10 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 May
2 Jul
3-4 wk
12 Jun
23 Jul
0 wk
23 Jun
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 Jun
3 Jul
0 wk
10 Jun
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Apr – 6 May
8 Jun
5-7 wk
10 Jun
13 Jul
0 wk
10 Jun
3 Jul
0 wk
Potato
Solanum tuberosum
9 – 23 May
30 May
4-6 wk
20 Jun
27 Jun
1 wk after
20 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Apr – 6 May
18 Jun
5-7 wk
10 Jun
23 Jul
0 wk
11 Jun
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
19 – 26 May
28 May
3-4 wk
16 Jun
18 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 May
15 Jun
3-4 wk
12 Jun
6 Jul
0 wk
23 Jun
26 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Apr – 13 May
20 Jun
4-6 wk
10 Jun
18 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 May
7 Jul
3-4 wk
10 Jun
28 Jul
0 wk
11 Jun
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Apr – 13 May
20 Jun
4-6 wk
10 Jun
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 May
30 May
2-4 wk
10 Jun
13 Jun
0 wk
10 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 Jun
13 Jun
0 wk
11 Jun
0 wk
Spinach
Spinacia oleracea
13 – 20 May
22 Jul
3-4 wk
10 Jun
12 Aug
0 wk
7 Jun
2 Aug
0 wk
Sweet potato
Ipomoea batatas
5 – 19 Jul
4-6 wk
16 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
15 – 29 Apr
6-8 wk
10 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
13 – 27 May
30 May
2-4 wk
10 Jun
13 Jun
0 wk
23 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Apr – 13 May
20 Jun
4-6 wk
10 Jun
18 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 May
22 Jun
3-4 wk
10 Jun
13 Jul
0 wk
11 Jun
3 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
5 – 19 May
6 May
4-6 wk
16 Jun
1 wk after
Lemon balm
Melissa officinalis
1 – 15 Apr
18 May
8-10 wk
10 Jun
13 Jul
0 wk
5 Jul
4 wk after
Dill
Anethum graveolens
11 Jun
23 Jul
0 wk
Wild chives
Allium schoenoprasum
15 – 29 Apr
1 Jun
6-8 wk
10 Jun
13 Jul
0 wk
11 Jun
3 Jul
0 wk
Spearmint
Mentha spicata
18 Mar – 15 Apr
18 May
8-12 wk
10 Jun
13 Jul
0 wk
5 Jul
4 wk after
Coriander
Coriandrum sativum
10 Jun
12 Aug
0 wk
23 Jun
2 Aug
2 wk after
Garden sage
Salvia officinalis
3 – 17 Apr
3 May
8-10 wk
12 Jun
28 Jun
0 wk
Common thyme
Thymus vulgaris
1 – 15 Apr
8 May
8-10 wk
10 Jun
3 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Apr
22 May
6-8 wk
10 Jun
3 Jul
0 wk
5 Jul
4 wk after
Parsley
Petroselinum crispum
15 – 29 Apr
22 May
6-8 wk
10 Jun
3 Jul
0 wk
11 Jun
23 Jun
0 wk
Rosemary
Salvia rosmarinus
6 Mar – 3 Apr
4 Apr
10-14 wk
12 Jun
13 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
19 – 26 May
3-4 wk
16 Jun
1 wk after
Cornflower
Centaurea cyanus
10 Jun
13 Jul
0 wk
11 Jun
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
1 – 15 Apr
17 Apr
8-10 wk
10 Jun
12 Jun
0 wk
Sweet William
Dianthus barbatus
15 – 29 Apr
6-8 wk
10 Jun
0 wk
20 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
15 – 29 Apr
1 May
6-8 wk
10 Jun
12 Jun
0 wk
12 Jul
5 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
17 Apr – 1 May
30 Apr
6-8 wk
12 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
28 Apr – 26 May
14 May
4-8 wk
23 Jun
2 wk after
23 Jun
2 wk after
Foxglove
Digitalis purpurea
1 – 15 Apr
8-10 wk
10 Jun
0 wk
23 Jun
2 wk after
Busy lizzie
Impatiens walleriana
19 Apr – 17 May
8-12 wk
12 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
21 Apr – 5 May
23 Apr
6-8 wk
16 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
12 – 26 May
4-6 wk
23 Jun
2 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Apr
18 Apr
8-10 wk
12 Jun
13 Jun
0 wk
Love in a mist
Nigella damascena
10 Jun
28 Jun
0 wk
11 Jun
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
15 – 29 Apr
21 Apr
6-8 wk
10 Jun
0 wk
12 Jul
5 wk after
Purple-top vervain
Verbena bonariensis
20 Mar – 17 Apr
18 Apr
8-12 wk
12 Jun
13 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
24 Mar – 21 Apr
8-12 wk
16 Jun
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
24 Mar – 21 Apr
29 Mar
8-12 wk
16 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
21 Apr – 5 May
6-8 wk
16 Jun
1 wk after
Corn poppy
Papaver rhoeas
10 Jun
13 Jul
0 wk
11 Jun
3 Jul
0 wk
Snapdragon
Antirrhinum majus
18 Mar – 15 Apr
8 May
8-12 wk
10 Jun
3 Jul
0 wk
20 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
14 – 28 Apr
8-10 wk
23 Jun
2 wk after
Sweet pea
Lathyrus odoratus
15 Apr – 6 May
29 May
5-8 wk
10 Jun
3 Jul
0 wk
Stock
Matthiola incana
15 – 29 Apr
1 Jun
6-8 wk
10 Jun
13 Jul
0 wk
23 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
15 – 29 Apr
2 May
6-8 wk
10 Jun
13 Jun
0 wk
23 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 May
4-6 wk
16 Jun
1 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Apr
18 May
8-10 wk
10 Jun
13 Jul
0 wk
20 Jun
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
18 Mar – 15 Apr
17 Apr
8-12 wk
10 Jun
12 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 Apr – 1 May
2 May
6-8 wk
12 Jun
13 Jun
0 wk
23 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
5 – 19 May
6 May
4-6 wk
16 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
12 – 26 May
13 May
3-5 wk
16 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
5 – 19 May
14 May
4-6 wk
16 Jun
1 wk after
5 Jul
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
31 Mar – 28 Apr
28 Apr
8-12 wk
23 Jun
23 Jun
2 wk after
Bee balm
Monarda didyma
18 Mar – 15 Apr
18 Apr
8-12 wk
10 Jun
13 Jun
0 wk
5 Jul
4 wk after
Yarrow
Achillea millefolium
15 – 29 Apr
6-8 wk
10 Jun
0 wk
23 Jun
2 wk after
Safflower
Carthamus tinctorius
10 Jun
13 Jun
0 wk
11 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Apr
22 May
6-8 wk
10 Jun
3 Jul
0 wk
25 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
29 Apr – 13 May
5 Jun
4-6 wk
10 Jun
3 Jul
0 wk
23 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
24 Mar – 7 Apr
10-12 wk
16 Jun
1 wk after
Sunflower
Helianthus annuus
26 May – 2 Jun
12 Jun
3-4 wk
23 Jun
3 Jul
2 wk after
5 Jul
4 wk after
China aster
Callistephus chinensis
28 Apr – 12 May
1 Jun
6-8 wk
23 Jun
13 Jul
2 wk after
23 Jul
6 wk after
Annual phlox
Phlox drummondii
Fleece
15 – 29 Apr
23 Apr
6-8 wk
10 Jun
0 wk
5 Jul
4 wk after
Hollyhock
Alcea rosea
15 – 29 Apr
6-8 wk
10 Jun
0 wk
23 Jun
2 wk after
Alpine delphinium
Delphinium elatum
18 Mar – 15 Apr
18 Apr
8-12 wk
10 Jun
13 Jun
0 wk
5 Jul
4 wk after
African marigold
Tagetes erecta
Fleece
21 Apr – 5 May
23 Apr
6-8 wk
16 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
17 Apr – 1 May
22 May
6-8 wk
12 Jun
3 Jul
0 wk
23 Jul
6 wk after
Wood sage
Salvia nemorosa
1 – 15 Apr
8 Apr
8-10 wk
10 Jun
0 wk
5 Jul
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
7 Apr – 5 May
22 Apr
6-10 wk
16 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
10 Jun
13 Jul
0 wk
11 Jun
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
14 – 28 Apr
8 May
8-10 wk
23 Jun
3 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Apr
2 May
6-8 wk
10 Jun
13 Jun
0 wk
23 Jun
2 wk after