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Method
Rel. frost
Last spring frost (0°C) 29 May Frost 3 of 4 years · 20 years of data
Frost-free season 112 days 29 May – 18 Sep
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)
10 – 24 Apr
10 Jun
5-7 wk
29 May
15 Jul
0 wk
30 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
17 Apr – 1 May
22 Jun
4-6 wk
29 May
20 Jul
0 wk
30 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Apr
5 Jun
5-7 wk
29 May
10 Jul
0 wk
29 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
7 – 14 May
3-4 wk
4 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
30 Apr – 7 May
2 Jun
4-5 wk
4 Jun
30 Jun
1 wk after
11 Jun
20 Jun
2 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)
Season too short
6 Mar – 3 Apr
10 Mar
8-12 wk
29 May
0 wk
29 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
20 May
25 May
1 wk before
20 May
1 wk before
Maize
Zea mays
Season too short
1 – 8 May
3-4 wk
29 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
20 Jun
3-4 wk
31 May
11 Jul
0 wk
11 Jun
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 May
30 Jun
0 wk
29 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Apr
5 Jun
5-7 wk
29 May
10 Jul
0 wk
29 May
30 Jun
0 wk
Potato
Solanum tuberosum
Season too short
14 – 28 Apr
7 May
4-6 wk
26 May
4 Jun
0 wk
26 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Apr
15 Jun
5-7 wk
29 May
20 Jul
0 wk
30 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
7 – 14 May
27 May
3-4 wk
4 Jun
17 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Greenhouse
1 – 8 May
4 May
3-4 wk
29 May
0 wk
29 May
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 Apr – 1 May
17 Jun
4-6 wk
29 May
15 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 May
4 Jul
3-4 wk
29 May
25 Jul
0 wk
30 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Apr – 1 May
17 Jun
4-6 wk
29 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
15 – 29 Apr
17 May
2-4 wk
13 May
31 May
2 wk before
13 May
21 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
20 May
25 May
1 wk before
20 May
1 wk before
Spinach
Spinacia oleracea
1 – 8 May
19 Jul
3-4 wk
29 May
9 Aug
0 wk
26 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
23 Jun – 7 Jul
4-6 wk
4 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
3 – 17 Apr
6-8 wk
29 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
1 – 15 May
29 May
2-4 wk
29 May
12 Jun
0 wk
11 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 Apr – 1 May
17 Jun
4-6 wk
29 May
15 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 May
19 Jun
3-4 wk
29 May
10 Jul
0 wk
30 May
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
23 Apr – 7 May
5 May
4-6 wk
4 Jun
1 wk after
Lemon balm
Melissa officinalis
20 Mar – 3 Apr
15 May
8-10 wk
29 May
10 Jul
0 wk
23 Jun
30 Jun
4 wk after
Dill
Anethum graveolens
30 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
3 – 17 Apr
29 May
6-8 wk
29 May
10 Jul
0 wk
30 May
30 Jun
0 wk
Spearmint
Mentha spicata
6 Mar – 3 Apr
15 May
8-12 wk
29 May
10 Jul
0 wk
23 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
29 May
31 Jul
0 wk
11 Jun
21 Jul
2 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
30 Apr
8-10 wk
31 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
20 Mar – 3 Apr
5 May
8-10 wk
29 May
30 Jun
0 wk
Oregano
Origanum vulgare
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
0 wk
23 Jun
4 wk after
Parsley
Petroselinum crispum
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
0 wk
30 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
20 Feb – 20 Mar
29 Mar
10-14 wk
29 May
7 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
7 – 14 May
12 May
3-4 wk
4 Jun
1 wk after
Cornflower
Centaurea cyanus
29 May
10 Jul
0 wk
30 May
30 Jun
0 wk
Statice
Limonium sinuatum
Greenhouse
20 Mar – 3 Apr
24 Apr
8-10 wk
29 May
19 Jun
0 wk
Sweet William
Dianthus barbatus
3 – 17 Apr
6-8 wk
29 May
0 wk
8 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
3 – 17 Apr
8 May
6-8 wk
29 May
19 Jun
0 wk
30 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
9 Apr – 7 May
23 May
4-8 wk
4 Jun
20 Jun
1 wk after
4 Jun
10 Jun
1 wk after
Foxglove
Digitalis purpurea
20 Mar – 3 Apr
8-10 wk
29 May
0 wk
11 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
19 Mar – 16 Apr
23 May
8-12 wk
11 Jun
18 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
3 – 17 Apr
18 May
6-8 wk
29 May
29 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
30 Apr – 14 May
4-6 wk
11 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
20 Mar – 3 Apr
15 Apr
8-10 wk
29 May
10 Jun
0 wk
Love in a mist
Nigella damascena
29 May
25 Jun
0 wk
30 May
15 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
3 – 17 Apr
28 Apr
6-8 wk
29 May
9 Jun
0 wk
30 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
6 Mar – 3 Apr
15 Apr
8-12 wk
29 May
10 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
6 Mar – 3 Apr
16 Mar
8-12 wk
29 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
12 Mar – 9 Apr
28 Mar
8-12 wk
4 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
9 – 23 Apr
11 Apr
6-8 wk
4 Jun
1 wk after
Corn poppy
Papaver rhoeas
29 May
10 Jul
0 wk
30 May
30 Jun
0 wk
Snapdragon
Antirrhinum majus
6 Mar – 3 Apr
5 May
8-12 wk
29 May
30 Jun
0 wk
8 Jun
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
26 Mar – 9 Apr
4 May
8-10 wk
4 Jun
29 Jun
1 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Apr
26 May
5-8 wk
29 May
30 Jun
0 wk
Stock
Matthiola incana
3 – 17 Apr
29 May
6-8 wk
29 May
10 Jul
0 wk
11 Jun
30 Jun
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Apr
29 Apr
6-8 wk
29 May
10 Jun
0 wk
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
1 wk after
Garden pansy
Viola × wittrockiana
20 Mar – 3 Apr
15 May
8-10 wk
29 May
10 Jul
0 wk
8 Jun
30 Jun
1 wk after
Petunia
Petunia
Greenhouse
6 Mar – 3 Apr
24 Apr
8-12 wk
29 May
19 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
3 – 17 Apr
29 Apr
6-8 wk
29 May
10 Jun
0 wk
23 Jun
4 wk after
Common zinnia
Zinnia elegans
Greenhouse
17 Apr – 1 May
27 May
4-6 wk
29 May
24 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
30 Apr – 14 May
12 May
3-5 wk
4 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
17 Apr – 1 May
23 May
4-6 wk
29 May
20 Jun
0 wk
11 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
19 Mar – 16 Apr
27 Apr
8-12 wk
11 Jun
22 Jun
2 wk after
Bee balm
Monarda didyma
6 Mar – 3 Apr
15 Apr
8-12 wk
29 May
10 Jun
0 wk
23 Jun
4 wk after
Yarrow
Achillea millefolium
3 – 17 Apr
6-8 wk
29 May
0 wk
11 Jun
2 wk after
Safflower
Carthamus tinctorius
29 May
10 Jun
0 wk
30 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
0 wk
13 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
17 Apr – 1 May
2 Jun
4-6 wk
29 May
30 Jun
0 wk
11 Jun
20 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
12 – 26 Mar
16 Mar
10-12 wk
4 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
7 – 14 May
6 Jun
3-4 wk
4 Jun
27 Jun
1 wk after
11 Jun
17 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
9 – 23 Apr
26 May
6-8 wk
4 Jun
7 Jul
1 wk after
23 Jun
27 Jun
4 wk after
Annual phlox
Phlox drummondii
Fleece
3 – 17 Apr
7 May
6-8 wk
29 May
18 Jun
0 wk
23 Jun
4 wk after
Hollyhock
Alcea rosea
3 – 17 Apr
6-8 wk
29 May
0 wk
11 Jun
2 wk after
Alpine delphinium
Delphinium elatum
6 Mar – 3 Apr
15 Apr
8-12 wk
29 May
10 Jun
0 wk
23 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
3 – 17 Apr
18 May
6-8 wk
29 May
29 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
5 – 19 Apr
7 May
6-8 wk
31 May
18 Jun
0 wk
11 Jul
6 wk after
Wood sage
Salvia nemorosa
20 Mar – 3 Apr
5 Apr
8-10 wk
29 May
31 May
0 wk
23 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
26 Mar – 23 Apr
21 Apr
6-10 wk
4 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
29 May
7 Jul
0 wk
30 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Greenhouse
20 Mar – 3 Apr
5 May
8-10 wk
29 May
30 Jun
0 wk
Water forget-me-not
Myosotis scorpioides
3 – 17 Apr
29 Apr
6-8 wk
29 May
10 Jun
0 wk
11 Jun
2 wk after