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Rel. frost
Last spring frost (0°C) 22 May Frost 9 of 10 years · 20 years of data
Frost-free season 87 days 22 May – 17 Aug
Probability that frost is over

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