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Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 10 years · 20 years of data
Frost-free season 137 days 28 May – 12 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
16 Jun
5-7 wk
28 May
21 Jul
0 wk
21 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
28 Jun
4-6 wk
28 May
26 Jul
0 wk
21 May
16 Jul
1 wk before
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
11 Jun
5-7 wk
28 May
16 Jul
0 wk
16 May
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
8 May
3-4 wk
3 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
25 May – 1 Jun
8 Jun
4-5 wk
29 Jun
6 Jul
5 wk after
3 Jul
5 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
1 Apr
8-12 wk
28 May
0 wk
7 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 May
16 Jun
1 wk before
21 May
6 Jun
1 wk before
Maize
Zea mays
Greenhouse
30 Apr – 7 May
3-4 wk
28 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
5 Jul
3-4 wk
30 May
26 Jul
0 wk
7 Jun
16 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
6 Jul
0 wk
16 May
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
11 Jun
5-7 wk
28 May
16 Jul
0 wk
16 May
6 Jul
2 wk before
Potato
Solanum tuberosum
21 Apr – 5 May
8 Jun
4-6 wk
2 Jun
6 Jul
1 wk after
2 Jun
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
21 Jun
5-7 wk
28 May
26 Jul
0 wk
21 May
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
13 May
3-4 wk
10 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
16 Jun
3-4 wk
30 May
7 Jul
0 wk
7 Jun
27 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
10 Jul
3-4 wk
28 May
31 Jul
0 wk
21 May
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Apr – 2 May
2 Jun
2-4 wk
16 May
16 Jun
2 wk before
16 May
6 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 May
16 Jun
1 wk before
21 May
6 Jun
1 wk before
Spinach
Spinacia oleracea
30 Apr – 7 May
25 Jul
3-4 wk
28 May
15 Aug
0 wk
10 May
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Apr
7 Apr
6-8 wk
28 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
15 May
2-4 wk
3 Jun
1 wk after
18 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
25 Jun
3-4 wk
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
22 Apr – 6 May
19 May
4-6 wk
3 Jun
16 Jun
1 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
21 May
8-10 wk
28 May
16 Jul
0 wk
18 Jun
6 Jul
3 wk after
Dill
Anethum graveolens
21 May
26 Jul
1 wk before
Wild chives
Allium schoenoprasum
2 – 16 Apr
4 Jun
6-8 wk
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Spearmint
Mentha spicata
5 Mar – 2 Apr
21 May
8-12 wk
28 May
16 Jul
0 wk
18 Jun
6 Jul
3 wk after
Coriander
Coriandrum sativum
28 May
15 Aug
0 wk
7 Jun
5 Aug
1 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
6 May
8-10 wk
30 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
11 May
8-10 wk
28 May
6 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
25 May
6-8 wk
28 May
6 Jul
0 wk
18 Jun
26 Jun
3 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
25 May
6-8 wk
28 May
6 Jul
0 wk
21 May
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
7 Apr
10-14 wk
30 May
16 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
6 – 13 May
26 May
3-4 wk
3 Jun
16 Jun
1 wk after
Cornflower
Centaurea cyanus
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
25 Mar – 8 Apr
14 Apr
8-10 wk
3 Jun
9 Jun
1 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
2 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
8 – 22 Apr
28 Apr
6-8 wk
3 Jun
9 Jun
1 wk after
13 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
25 Apr
6-8 wk
8 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
23 Apr – 21 May
9 May
4-8 wk
18 Jun
3 wk after
18 Jun
3 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
7 Jun
1 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
9 May
8-12 wk
29 Jun
4 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
21 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
21 Apr
8-10 wk
30 May
16 Jun
0 wk
Love in a mist
Nigella damascena
28 May
1 Jul
0 wk
21 May
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
8 – 22 Apr
18 Apr
6-8 wk
3 Jun
1 wk after
13 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
21 Apr
8-12 wk
30 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
18 Mar – 15 Apr
22 Mar
8-12 wk
10 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
11 Mar – 8 Apr
11 Apr
8-12 wk
3 Jun
6 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
8 – 22 Apr
25 Apr
6-8 wk
3 Jun
6 Jun
1 wk after
Corn poppy
Papaver rhoeas
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
11 May
8-12 wk
28 May
6 Jul
0 wk
2 Jun
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
1 – 15 Apr
24 Apr
8-10 wk
10 Jun
19 Jun
2 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
1 Jun
5-8 wk
28 May
6 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
4 Jun
6-8 wk
28 May
16 Jul
0 wk
7 Jun
6 Jul
1 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
5 May
6-8 wk
28 May
16 Jun
0 wk
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
4 May
4-6 wk
3 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
21 May
8-10 wk
28 May
16 Jul
0 wk
2 Jun
6 Jul
1 wk after
Petunia
Petunia
Fleece
11 Mar – 8 Apr
14 Apr
8-12 wk
3 Jun
9 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
5 May
6-8 wk
30 May
16 Jun
0 wk
3 Jul
5 wk after
Common zinnia
Zinnia elegans
Fleece
22 Apr – 6 May
19 May
4-6 wk
3 Jun
16 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
29 Apr – 13 May
26 May
3-5 wk
3 Jun
16 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
9 May
4-6 wk
10 Jun
2 wk after
3 Jul
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
6 Apr – 4 May
13 Apr
8-12 wk
29 Jun
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
21 Apr
8-12 wk
28 May
16 Jun
0 wk
18 Jun
3 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
5 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Safflower
Carthamus tinctorius
28 May
16 Jun
0 wk
21 May
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
25 May
6-8 wk
28 May
6 Jul
0 wk
19 Apr
26 Jun
6 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
8 Jun
4-6 wk
28 May
6 Jul
0 wk
7 Jun
26 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
28 Mar
10-12 wk
3 Jun
6 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
15 Jun
3-4 wk
10 Jun
6 Jul
2 wk after
18 Jun
26 Jun
3 wk after
China aster
Callistephus chinensis
15 – 29 Apr
4 Jun
6-8 wk
10 Jun
16 Jul
2 wk after
3 Jul
6 Jul
5 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
21 Apr
6-8 wk
3 Jun
1 wk after
3 Jul
5 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
21 Apr
8-12 wk
28 May
16 Jun
0 wk
18 Jun
3 wk after
African marigold
Tagetes erecta
15 – 29 Apr
21 Apr
6-8 wk
10 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
25 May
6-8 wk
30 May
6 Jul
0 wk
3 Jul
5 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
11 Apr
8-10 wk
28 May
6 Jun
0 wk
18 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
25 Mar – 22 Apr
5 May
6-10 wk
3 Jun
16 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
11 May
8-10 wk
10 Jun
6 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
5 May
6-8 wk
28 May
16 Jun
0 wk
7 Jun
1 wk after