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Method
Rel. frost
Last spring frost (0°C) 26 May Frost 9 of 10 years · 20 years of data
Frost-free season 103 days 26 May – 6 Sep
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)
7 – 21 Apr
10 Jun
5-7 wk
26 May
15 Jul
0 wk
27 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
22 Jun
4-6 wk
26 May
20 Jul
0 wk
27 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Apr
5 Jun
5-7 wk
26 May
10 Jul
0 wk
26 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
4 – 11 May
3-4 wk
1 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
27 Apr – 4 May
29 May
4-5 wk
1 Jun
26 Jun
1 wk after
8 Jun
16 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
3 – 31 Mar
7 Mar
8-12 wk
26 May
0 wk
26 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
17 May
22 May
1 wk before
17 May
1 wk before
Maize
Zea mays
Season too short
28 Apr – 5 May
3-4 wk
26 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
15 Jun
3-4 wk
28 May
6 Jul
0 wk
8 Jun
26 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 May
26 Jun
0 wk
26 May
16 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Apr
5 Jun
5-7 wk
26 May
10 Jul
0 wk
26 May
30 Jun
0 wk
Potato
Solanum tuberosum
Season too short
11 – 25 Apr
29 Apr
4-6 wk
23 May
27 May
0 wk
23 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Apr
11 Jun
5-7 wk
26 May
16 Jul
0 wk
27 May
6 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
4 – 11 May
3-4 wk
1 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Greenhouse
28 Apr – 5 May
3-4 wk
26 May
0 wk
26 May
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
17 Jun
4-6 wk
26 May
15 Jul
0 wk
Lettuce
Lactuca sativa
28 Apr – 5 May
30 Jun
3-4 wk
26 May
21 Jul
0 wk
27 May
11 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Apr
17 Jun
4-6 wk
26 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
12 – 26 Apr
13 May
2-4 wk
10 May
27 May
2 wk before
10 May
17 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
17 May
22 May
1 wk before
17 May
1 wk before
Spinach
Spinacia oleracea
28 Apr – 5 May
19 Jul
3-4 wk
26 May
9 Aug
0 wk
23 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
28 Apr – 12 May
2-4 wk
26 May
0 wk
8 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
17 Jun
4-6 wk
26 May
15 Jul
0 wk
Garden pea
Pisum sativum
28 Apr – 5 May
15 Jun
3-4 wk
26 May
6 Jul
0 wk
27 May
26 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
20 Apr – 4 May
4-6 wk
1 Jun
1 wk after
Lemon balm
Melissa officinalis
17 – 31 Mar
11 May
8-10 wk
26 May
6 Jul
0 wk
20 Jun
26 Jun
4 wk after
Dill
Anethum graveolens
27 May
6 Jul
0 wk
Wild chives
Allium schoenoprasum
31 Mar – 14 Apr
29 May
6-8 wk
26 May
10 Jul
0 wk
27 May
30 Jun
0 wk
Spearmint
Mentha spicata
3 – 31 Mar
15 May
8-12 wk
26 May
10 Jul
0 wk
20 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
26 May
26 Jul
0 wk
8 Jun
16 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
30 Apr
8-10 wk
28 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
17 – 31 Mar
5 May
8-10 wk
26 May
30 Jun
0 wk
Oregano
Origanum vulgare
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
0 wk
20 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
0 wk
27 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
Greenhouse
17 Feb – 17 Mar
1 Apr
10-14 wk
26 May
10 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
4 – 11 May
3-4 wk
1 Jun
1 wk after
Cornflower
Centaurea cyanus
26 May
10 Jul
0 wk
27 May
30 Jun
0 wk
Statice
Limonium sinuatum
Season too short
17 – 31 Mar
26 Mar
8-10 wk
26 May
0 wk
Sweet William
Dianthus barbatus
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
31 Mar – 14 Apr
9 Apr
6-8 wk
26 May
0 wk
27 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
31 Mar – 14 Apr
19 Apr
6-8 wk
26 May
31 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
6 Apr – 4 May
3 May
4-8 wk
1 Jun
1 wk after
1 Jun
1 wk after
Foxglove
Digitalis purpurea
17 – 31 Mar
8-10 wk
26 May
0 wk
8 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Season too short
9 Mar – 6 Apr
27 Mar
8-12 wk
1 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
31 Mar – 14 Apr
19 Apr
6-8 wk
26 May
31 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
17 – 31 Mar
11 Apr
8-10 wk
26 May
6 Jun
0 wk
Love in a mist
Nigella damascena
26 May
21 Jun
0 wk
27 May
11 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
27 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
3 – 31 Mar
11 Apr
8-12 wk
26 May
6 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
3 – 31 Mar
16 Mar
8-12 wk
26 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
6 – 20 Apr
6-8 wk
1 Jun
1 wk after
Corn poppy
Papaver rhoeas
26 May
6 Jul
0 wk
27 May
26 Jun
0 wk
Snapdragon
Antirrhinum majus
3 – 31 Mar
1 May
8-12 wk
26 May
26 Jun
0 wk
5 Jun
16 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
23 Mar – 6 Apr
5 Apr
8-10 wk
1 Jun
1 wk after
Sweet pea
Lathyrus odoratus
31 Mar – 21 Apr
26 May
5-8 wk
26 May
30 Jun
0 wk
Stock
Matthiola incana
31 Mar – 14 Apr
25 May
6-8 wk
26 May
6 Jul
0 wk
8 Jun
26 Jun
2 wk after
Wormwood
Artemisia absinthium
31 Mar – 14 Apr
29 Apr
6-8 wk
26 May
10 Jun
0 wk
8 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
1 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Mar
15 May
8-10 wk
26 May
10 Jul
0 wk
5 Jun
30 Jun
1 wk after
Petunia
Petunia
Season too short
3 – 31 Mar
26 Mar
8-12 wk
26 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
31 Mar – 14 Apr
25 Apr
6-8 wk
26 May
6 Jun
0 wk
20 Jun
4 wk after
Common zinnia
Zinnia elegans
Season too short
14 – 28 Apr
4-6 wk
26 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
27 Apr – 11 May
3-5 wk
1 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
14 – 28 Apr
3 May
4-6 wk
26 May
31 May
0 wk
8 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
16 Mar – 13 Apr
8-12 wk
8 Jun
2 wk after
Bee balm
Monarda didyma
3 – 31 Mar
11 Apr
8-12 wk
26 May
6 Jun
0 wk
20 Jun
4 wk after
Yarrow
Achillea millefolium
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Safflower
Carthamus tinctorius
26 May
10 Jun
0 wk
27 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
0 wk
10 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
14 – 28 Apr
29 May
4-6 wk
26 May
26 Jun
0 wk
8 Jun
16 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
9 – 23 Mar
10-12 wk
1 Jun
1 wk after
Sunflower
Helianthus annuus
Greenhouse
28 Apr – 5 May
9 Jun
3-4 wk
26 May
30 Jun
0 wk
1 Jun
20 Jun
1 wk after
China aster
Callistephus chinensis
Fleece
6 – 20 Apr
20 May
6-8 wk
1 Jun
1 Jul
1 wk after
20 Jun
21 Jun
4 wk after
Annual phlox
Phlox drummondii
Greenhouse
31 Mar – 14 Apr
19 Apr
6-8 wk
26 May
31 May
0 wk
8 Jun
2 wk after
Hollyhock
Alcea rosea
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Mar
11 Apr
8-12 wk
26 May
6 Jun
0 wk
20 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
31 Mar – 14 Apr
19 Apr
6-8 wk
26 May
31 May
0 wk
Black-eyed Susan
Rudbeckia hirta
Fleece
31 Mar – 14 Apr
10 May
6-8 wk
26 May
21 Jun
0 wk
20 Jun
4 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
1 Apr
8-10 wk
26 May
27 May
0 wk
20 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
23 Mar – 20 Apr
6-10 wk
1 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
26 May
1 Jul
0 wk
27 May
21 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Greenhouse
17 – 31 Mar
1 May
8-10 wk
26 May
26 Jun
0 wk
Water forget-me-not
Myosotis scorpioides
31 Mar – 14 Apr
29 Apr
6-8 wk
26 May
10 Jun
0 wk
8 Jun
2 wk after