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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 10 years · 20 years of data
Frost-free season 139 days 28 May – 14 Oct
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)
9 – 23 Apr
13 Jun
5-7 wk
28 May
18 Jul
0 wk
29 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
25 Jun
4-6 wk
28 May
23 Jul
0 wk
29 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
8 Jun
5-7 wk
28 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
19 May
3-4 wk
3 Jun
9 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
25 May – 1 Jun
5 Jun
4-5 wk
29 Jun
3 Jul
5 wk after
10 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
29 Mar
8-12 wk
28 May
0 wk
10 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
13 Jun
0 wk
29 May
3 Jun
0 wk
Maize
Zea mays
Greenhouse
30 Apr – 7 May
9 May
3-4 wk
28 May
30 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
2 Jul
3-4 wk
30 May
23 Jul
0 wk
10 Jun
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
3 Jul
0 wk
28 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
8 Jun
5-7 wk
28 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
5 Jun
4-6 wk
7 Jun
3 Jul
1 wk after
7 Jun
23 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
18 Jun
5-7 wk
28 May
23 Jul
0 wk
29 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
24 May
3-4 wk
10 Jun
14 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
17 Jun
3-4 wk
30 May
8 Jul
0 wk
10 Jun
28 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
7 Jul
3-4 wk
28 May
28 Jul
0 wk
29 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
30 May
2-4 wk
28 May
13 Jun
0 wk
28 May
3 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
13 Jun
0 wk
29 May
3 Jun
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
22 Jul
3-4 wk
28 May
12 Aug
0 wk
25 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Apr
18 Apr
6-8 wk
28 May
30 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
26 May
2-4 wk
3 Jun
9 Jun
1 wk after
22 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
22 Jun
3-4 wk
28 May
13 Jul
0 wk
29 May
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
Fleece
29 Apr – 13 May
2 May
4-6 wk
10 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
18 May
8-10 wk
28 May
13 Jul
0 wk
22 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
29 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
1 Jun
6-8 wk
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
18 May
8-12 wk
28 May
13 Jul
0 wk
22 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
12 Aug
0 wk
10 Jun
2 Aug
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
3 May
8-10 wk
30 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
8 May
8-10 wk
28 May
3 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
22 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
29 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
4 Apr
10-14 wk
30 May
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
Fleece
13 – 20 May
3-4 wk
10 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
8-10 wk
10 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
6-8 wk
10 Jun
2 wk after
3 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
17 Apr
6-8 wk
8 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
15 Apr – 13 May
23 May
4-8 wk
10 Jun
20 Jun
2 wk after
10 Jun
10 Jun
2 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
10 Jun
2 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
20 May
8-12 wk
29 Jun
15 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
23 Apr
6-8 wk
10 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
2 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
18 Apr
8-10 wk
30 May
13 Jun
0 wk
Love in a mist
Nigella damascena
28 May
28 Jun
0 wk
29 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
8 – 22 Apr
17 Apr
6-8 wk
3 Jun
1 wk after
17 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
18 Apr
8-12 wk
30 May
13 Jun
0 wk
Cardoon
Cynara cardunculus
18 Mar – 15 Apr
19 Mar
8-12 wk
10 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
11 Mar – 8 Apr
3 Apr
8-12 wk
3 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
8 – 22 Apr
17 Apr
6-8 wk
3 Jun
1 wk after
Corn poppy
Papaver rhoeas
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
8 May
8-12 wk
28 May
3 Jul
0 wk
7 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
20 Apr – 4 May
8-10 wk
29 Jun
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
29 May
5-8 wk
28 May
3 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
1 Jun
6-8 wk
28 May
13 Jul
0 wk
10 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
26 Apr
4-6 wk
3 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
18 May
8-10 wk
28 May
13 Jul
0 wk
7 Jun
3 Jul
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
30 Mar
8-12 wk
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
2 May
6-8 wk
30 May
13 Jun
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
2 May
4-6 wk
10 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
9 May
3-5 wk
10 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
1 May
4-6 wk
10 Jun
2 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
6 Apr – 4 May
24 Apr
8-12 wk
29 Jun
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
18 Apr
8-12 wk
28 May
13 Jun
0 wk
22 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
2 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Safflower
Carthamus tinctorius
28 May
13 Jun
0 wk
29 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
12 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
5 Jun
4-6 wk
28 May
3 Jul
0 wk
10 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
22 Mar
10-12 wk
3 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
12 Jun
3-4 wk
10 Jun
3 Jul
2 wk after
22 Jun
23 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
1 Jun
6-8 wk
10 Jun
13 Jul
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
23 Apr
6-8 wk
3 Jun
4 Jun
1 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
18 Apr
8-12 wk
28 May
13 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
23 Apr
6-8 wk
10 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
22 May
6-8 wk
30 May
3 Jul
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
8 Apr
8-10 wk
28 May
3 Jun
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
18 Apr
6-10 wk
10 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
8 May
8-10 wk
10 Jun
3 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
0 wk
10 Jun
2 wk after