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Method
Rel. frost
Last spring frost (0°C) 21 Jun Frost 1 of 4 years · 20 years of data
Frost-free season 73 days 21 Jun – 2 Sep
Probability that frost is over

75% = 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 May
16 Jun
5-7 wk
21 Jun
21 Jul
0 wk
25 Jun
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 May
28 Jun
4-6 wk
21 Jun
26 Jul
0 wk
25 Jun
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
4 Apr – 2 May
8-12 wk
27 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 May
11 Jun
5-7 wk
21 Jun
16 Jul
0 wk
21 Jun
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
30 May – 6 Jun
3-4 wk
27 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 May – 6 Jun
30 May
4-5 wk
4 Jul
2 wk after
26 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jul
3-4 wk
30 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
29 Mar – 26 Apr
1 Apr
8-12 wk
21 Jun
0 wk
21 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
25 Jun
1 wk after
25 Jun
1 wk after
Maize
Zea mays
Greenhouse
24 – 31 May
3-4 wk
21 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 May – 2 Jun
26 Jun
3-4 wk
23 Jun
17 Jul
0 wk
12 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 Jun
6 Jul
0 wk
21 Jun
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 May
11 Jun
5-7 wk
21 Jun
16 Jul
0 wk
21 Jun
6 Jul
0 wk
Potato
Solanum tuberosum
Fleece
14 – 28 May
21 May
4-6 wk
25 Jun
1 wk after
25 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 May
21 Jun
5-7 wk
21 Jun
26 Jul
0 wk
25 Jun
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
6 – 13 Jun
3-4 wk
4 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
24 – 31 May
26 May
3-4 wk
21 Jun
0 wk
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 May
23 Jun
4-6 wk
21 Jun
21 Jul
0 wk
Lettuce
Lactuca sativa
24 – 31 May
10 Jul
3-4 wk
21 Jun
31 Jul
0 wk
25 Jun
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 May
23 Jun
4-6 wk
21 Jun
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 May – 7 Jun
2-4 wk
21 Jun
0 wk
21 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Jun
1 wk after
25 Jun
1 wk after
Spinach
Spinacia oleracea
24 – 31 May
25 Jul
3-4 wk
21 Jun
15 Aug
0 wk
17 Jun
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
23 Jul – 6 Aug
4-6 wk
3 Sep
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
26 Apr – 10 May
27 Apr
6-8 wk
21 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
30 May – 13 Jun
4 Jun
2-4 wk
27 Jun
1 wk after
26 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 May
23 Jun
4-6 wk
21 Jun
21 Jul
0 wk
Garden pea
Pisum sativum
24 – 31 May
25 Jun
3-4 wk
21 Jun
16 Jul
0 wk
25 Jun
6 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
16 – 30 May
29 May
4-6 wk
27 Jun
1 wk after
Lemon balm
Melissa officinalis
12 – 26 Apr
21 May
8-10 wk
21 Jun
16 Jul
0 wk
26 Jul
5 wk after
Dill
Anethum graveolens
25 Jun
17 Jul
1 wk after
Wild chives
Allium schoenoprasum
26 Apr – 10 May
4 Jun
6-8 wk
21 Jun
16 Jul
0 wk
25 Jun
6 Jul
1 wk after
Spearmint
Mentha spicata
29 Mar – 26 Apr
21 May
8-12 wk
21 Jun
16 Jul
0 wk
26 Jul
5 wk after
Coriander
Coriandrum sativum
21 Jun
6 Aug
0 wk
12 Jul
27 Jul
3 wk after
Garden sage
Salvia officinalis
14 – 28 Apr
6 May
8-10 wk
23 Jun
1 Jul
0 wk
Common thyme
Thymus vulgaris
12 – 26 Apr
11 May
8-10 wk
21 Jun
6 Jul
0 wk
Oregano
Origanum vulgare
26 Apr – 10 May
25 May
6-8 wk
21 Jun
6 Jul
0 wk
26 Jul
5 wk after
Parsley
Petroselinum crispum
26 Apr – 10 May
25 May
6-8 wk
21 Jun
6 Jul
0 wk
25 Jun
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
15 Mar – 12 Apr
7 Apr
10-14 wk
21 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
30 May – 6 Jun
5 Jun
3-4 wk
27 Jun
1 wk after
Cornflower
Centaurea cyanus
21 Jun
16 Jul
0 wk
25 Jun
6 Jul
1 wk after
Statice
Limonium sinuatum
25 Apr – 9 May
8-10 wk
4 Jul
2 wk after
Sweet William
Dianthus barbatus
26 Apr – 10 May
6-8 wk
21 Jun
0 wk
7 Jul
2 wk after
Snow-on-the-mountain
Euphorbia marginata
9 – 23 May
6-8 wk
4 Jul
2 wk after
3 Sep
11 wk after
Pinnate dahlia
Dahlia × pinnata
7 – 21 May
6-8 wk
2 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
17 May – 14 Jun
3 Jun
4-8 wk
12 Jul
3 wk after
12 Jul
3 wk after
Foxglove
Digitalis purpurea
12 – 26 Apr
8-10 wk
21 Jun
0 wk
12 Jul
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
11 Apr – 9 May
16 Jun
8-12 wk
4 Jul
11 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
9 – 23 May
12 May
6-8 wk
4 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
23 May – 6 Jun
4-6 wk
4 Jul
2 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Apr
8-10 wk
23 Jun
0 wk
Love in a mist
Nigella damascena
21 Jun
1 Jul
0 wk
25 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
2 – 16 May
5 May
6-8 wk
27 Jun
1 wk after
19 Aug
8 wk after
Purple-top vervain
Verbena bonariensis
31 Mar – 28 Apr
12 Apr
8-12 wk
23 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
29 Mar – 26 Apr
8-12 wk
21 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
4 Apr – 2 May
21 Apr
8-12 wk
27 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
2 – 16 May
5 May
6-8 wk
27 Jun
1 wk after
Corn poppy
Papaver rhoeas
21 Jun
16 Jul
0 wk
25 Jun
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
29 Mar – 26 Apr
11 May
8-12 wk
21 Jun
6 Jul
0 wk
7 Jul
2 wk after
Flossflower
Ageratum houstonianum
Fleece
25 Apr – 9 May
11 May
8-10 wk
4 Jul
6 Jul
2 wk after
Sweet pea
Lathyrus odoratus
26 Apr – 17 May
1 Jun
5-8 wk
21 Jun
6 Jul
0 wk
Stock
Matthiola incana
26 Apr – 10 May
4 Jun
6-8 wk
21 Jun
16 Jul
0 wk
12 Jul
3 wk after
Wormwood
Artemisia absinthium
26 Apr – 10 May
5 May
6-8 wk
21 Jun
0 wk
12 Jul
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
16 – 30 May
4-6 wk
27 Jun
1 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Apr
21 May
8-10 wk
21 Jun
16 Jul
0 wk
7 Jul
2 wk after
Petunia
Petunia
11 Apr – 9 May
18 Apr
8-12 wk
4 Jul
2 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Apr – 12 May
6-8 wk
23 Jun
0 wk
9 Aug
7 wk after
Common zinnia
Zinnia elegans
Fleece
16 – 30 May
29 May
4-6 wk
27 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
23 May – 6 Jun
5 Jun
3-5 wk
27 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
23 May – 6 Jun
4-6 wk
4 Jul
2 wk after
9 Aug
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
11 Apr – 9 May
21 May
8-12 wk
4 Jul
16 Jul
2 wk after
Bee balm
Monarda didyma
29 Mar – 26 Apr
21 Apr
8-12 wk
21 Jun
0 wk
26 Jul
5 wk after
Yarrow
Achillea millefolium
26 Apr – 10 May
6-8 wk
21 Jun
0 wk
12 Jul
3 wk after
Safflower
Carthamus tinctorius
21 Jun
0 wk
25 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
26 Apr – 10 May
25 May
6-8 wk
21 Jun
6 Jul
0 wk
3 Jun
26 Jun
3 wk before
Bishop's flower
Ammi majus
10 – 24 May
8 Jun
4-6 wk
21 Jun
6 Jul
0 wk
12 Jul
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
4 – 18 Apr
10-12 wk
27 Jun
1 wk after
Sunflower
Helianthus annuus
6 – 13 Jun
3-4 wk
4 Jul
2 wk after
26 Jul
5 wk after
China aster
Callistephus chinensis
9 – 23 May
16 May
6-8 wk
4 Jul
2 wk after
9 Aug
7 wk after
Annual phlox
Phlox drummondii
2 – 16 May
12 May
6-8 wk
27 Jun
1 wk after
9 Aug
7 wk after
Hollyhock
Alcea rosea
26 Apr – 10 May
6-8 wk
21 Jun
0 wk
12 Jul
3 wk after
Alpine delphinium
Delphinium elatum
29 Mar – 26 Apr
21 Apr
8-12 wk
21 Jun
0 wk
26 Jul
5 wk after
African marigold
Tagetes erecta
9 – 23 May
12 May
6-8 wk
4 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
28 Apr – 12 May
6 May
6-8 wk
23 Jun
0 wk
9 Aug
7 wk after
Wood sage
Salvia nemorosa
12 – 26 Apr
8-10 wk
21 Jun
0 wk
26 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
18 Apr – 16 May
15 May
6-10 wk
27 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
21 Jun
16 Jul
0 wk
25 Jun
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
18 Apr – 2 May
2 May
8-10 wk
27 Jun
27 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
26 Apr – 10 May
5 May
6-8 wk
21 Jun
0 wk
12 Jul
3 wk after