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Method
Rel. frost
Last spring frost (0°C) 30 May Frost 3 of 4 years · 20 years of data
Frost-free season 83 days 30 May – 21 Aug
Probability that frost is over

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