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Method
Rel. frost
Last spring frost (0°C) 29 May Frost 3 of 4 years · 20 years of data
Frost-free season 85 days 29 May – 22 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)
10 – 24 Apr
16 Jun
5-7 wk
29 May
21 Jul
0 wk
2 Jun
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
17 Apr – 1 May
28 Jun
4-6 wk
29 May
26 Jul
0 wk
2 Jun
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Apr
11 Jun
5-7 wk
29 May
16 Jul
0 wk
29 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
7 – 14 May
19 May
3-4 wk
4 Jun
9 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
7 – 14 May
17 May
4-5 wk
11 Jun
14 Jun
2 wk after
3 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
6 Mar – 3 Apr
21 Mar
8-12 wk
29 May
0 wk
29 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
2 Jun
1 wk after
2 Jun
1 wk after
Maize
Zea mays
Greenhouse
1 – 8 May
9 May
3-4 wk
29 May
30 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
13 Jun
3-4 wk
31 May
4 Jul
0 wk
19 Jun
24 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 May
28 Jun
0 wk
29 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Apr
11 Jun
5-7 wk
29 May
16 Jul
0 wk
29 May
6 Jul
0 wk
Potato
Solanum tuberosum
3 – 17 May
4-6 wk
14 Jun
2 wk after
14 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Apr
13 Jun
5-7 wk
29 May
18 Jul
0 wk
2 Jun
8 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
14 – 21 May
24 May
3-4 wk
11 Jun
14 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 May
3-4 wk
31 May
0 wk
19 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 Apr – 1 May
23 Jun
4-6 wk
29 May
21 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 May
2 Jul
3-4 wk
29 May
23 Jul
0 wk
2 Jun
13 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Apr – 1 May
23 Jun
4-6 wk
29 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 May
12 May
2-4 wk
29 May
0 wk
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
2 Jun
1 wk after
2 Jun
1 wk after
Spinach
Spinacia oleracea
1 – 8 May
25 Jul
3-4 wk
29 May
15 Aug
0 wk
25 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
30 Jun – 14 Jul
4-6 wk
11 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
3 – 17 Apr
18 Apr
6-8 wk
29 May
30 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
7 – 21 May
26 May
2-4 wk
4 Jun
9 Jun
1 wk after
3 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 Apr – 1 May
23 Jun
4-6 wk
29 May
21 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 May
17 Jun
3-4 wk
29 May
8 Jul
0 wk
2 Jun
28 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
23 Apr – 7 May
25 May
4-6 wk
4 Jun
22 Jun
1 wk after
Lemon balm
Melissa officinalis
20 Mar – 3 Apr
13 May
8-10 wk
29 May
8 Jul
0 wk
3 Jul
5 wk after
Dill
Anethum graveolens
2 Jun
4 Jul
1 wk after
Wild chives
Allium schoenoprasum
3 – 17 Apr
4 Jun
6-8 wk
29 May
16 Jul
0 wk
2 Jun
6 Jul
1 wk after
Spearmint
Mentha spicata
6 Mar – 3 Apr
21 May
8-12 wk
29 May
16 Jul
0 wk
3 Jul
6 Jul
5 wk after
Coriander
Coriandrum sativum
29 May
24 Jul
0 wk
19 Jun
14 Jul
3 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
6 May
8-10 wk
31 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
20 Mar – 3 Apr
11 May
8-10 wk
29 May
6 Jul
0 wk
Oregano
Origanum vulgare
3 – 17 Apr
25 May
6-8 wk
29 May
6 Jul
0 wk
3 Jul
5 wk after
Parsley
Petroselinum crispum
3 – 17 Apr
25 May
6-8 wk
29 May
6 Jul
0 wk
2 Jun
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
20 Feb – 20 Mar
23 Mar
10-14 wk
29 May
1 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
7 – 14 May
1 Jun
3-4 wk
4 Jun
22 Jun
1 wk after
Cornflower
Centaurea cyanus
29 May
16 Jul
0 wk
2 Jun
6 Jul
1 wk after
Statice
Limonium sinuatum
2 – 16 Apr
11 Apr
8-10 wk
11 Jun
2 wk after
Sweet William
Dianthus barbatus
3 – 17 Apr
6-8 wk
29 May
0 wk
14 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
16 – 30 Apr
25 Apr
6-8 wk
11 Jun
2 wk after
11 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Apr
1 May
6-8 wk
9 Jun
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
24 Apr – 22 May
21 May
4-8 wk
19 Jun
3 wk after
19 Jun
3 wk after
Foxglove
Digitalis purpurea
20 Mar – 3 Apr
8-10 wk
29 May
0 wk
19 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
19 Mar – 16 Apr
12 Jun
8-12 wk
11 Jun
7 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
5 May
6-8 wk
11 Jun
16 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
30 Apr – 14 May
4-6 wk
11 Jun
2 wk after
Chinese lantern
Physalis alkekengi
22 Mar – 5 Apr
30 Mar
8-10 wk
31 May
0 wk
Love in a mist
Nigella damascena
29 May
23 Jun
0 wk
2 Jun
13 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
9 – 23 Apr
23 Apr
6-8 wk
4 Jun
4 Jun
1 wk after
27 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
8 Mar – 5 Apr
30 Mar
8-12 wk
31 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
6 Mar – 3 Apr
22 Mar
8-12 wk
29 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
12 Mar – 9 Apr
17 Apr
8-12 wk
4 Jun
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
9 – 23 Apr
1 May
6-8 wk
4 Jun
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
29 May
8 Jul
0 wk
2 Jun
28 Jun
1 wk after
Snapdragon
Antirrhinum majus
6 Mar – 3 Apr
3 May
8-12 wk
29 May
28 Jun
0 wk
14 Jun
18 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
2 – 16 Apr
29 Apr
8-10 wk
11 Jun
24 Jun
2 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Apr
1 Jun
5-8 wk
29 May
6 Jul
0 wk
Stock
Matthiola incana
3 – 17 Apr
27 May
6-8 wk
29 May
8 Jul
0 wk
19 Jun
28 Jun
3 wk after
Wormwood
Artemisia absinthium
3 – 17 Apr
5 May
6-8 wk
29 May
16 Jun
0 wk
19 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
23 Apr – 7 May
10 May
4-6 wk
4 Jun
7 Jun
1 wk after
Garden pansy
Viola × wittrockiana
20 Mar – 3 Apr
21 May
8-10 wk
29 May
16 Jul
0 wk
14 Jun
6 Jul
2 wk after
Petunia
Petunia
19 Mar – 16 Apr
11 Apr
8-12 wk
11 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Apr
13 Apr
6-8 wk
31 May
0 wk
17 Jul
7 wk after
Common zinnia
Zinnia elegans
Fleece
23 Apr – 7 May
25 May
4-6 wk
4 Jun
22 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
30 Apr – 14 May
1 Jun
3-5 wk
4 Jun
22 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
30 Apr – 14 May
15 May
4-6 wk
11 Jun
12 Jun
2 wk after
17 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
19 Mar – 16 Apr
17 May
8-12 wk
11 Jun
12 Jul
2 wk after
Bee balm
Monarda didyma
6 Mar – 3 Apr
13 Apr
8-12 wk
29 May
8 Jun
0 wk
3 Jul
5 wk after
Yarrow
Achillea millefolium
3 – 17 Apr
5 Apr
6-8 wk
29 May
0 wk
19 Jun
3 wk after
Safflower
Carthamus tinctorius
29 May
16 Jun
0 wk
2 Jun
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Apr
25 May
6-8 wk
29 May
6 Jul
0 wk
11 May
26 Jun
3 wk before
Bishop's flower
Ammi majus
17 Apr – 1 May
31 May
4-6 wk
29 May
28 Jun
0 wk
19 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
12 – 26 Mar
20 Mar
10-12 wk
4 Jun
1 wk after
Sunflower
Helianthus annuus
14 – 21 May
15 May
3-4 wk
11 Jun
2 wk after
3 Jul
5 wk after
China aster
Callistephus chinensis
16 – 30 Apr
4 May
6-8 wk
11 Jun
15 Jun
2 wk after
17 Jul
7 wk after
Annual phlox
Phlox drummondii
9 – 23 Apr
5 May
6-8 wk
4 Jun
16 Jun
1 wk after
17 Jul
7 wk after
Hollyhock
Alcea rosea
3 – 17 Apr
6-8 wk
29 May
0 wk
19 Jun
3 wk after
Alpine delphinium
Delphinium elatum
6 Mar – 3 Apr
13 Apr
8-12 wk
29 May
8 Jun
0 wk
3 Jul
5 wk after
African marigold
Tagetes erecta
16 – 30 Apr
5 May
6-8 wk
11 Jun
16 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Apr
24 Apr
6-8 wk
31 May
5 Jun
0 wk
17 Jul
7 wk after
Wood sage
Salvia nemorosa
20 Mar – 3 Apr
3 Apr
8-10 wk
29 May
29 May
0 wk
3 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
26 Mar – 23 Apr
11 May
6-10 wk
4 Jun
22 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
29 May
1 Jul
0 wk
2 Jun
21 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
26 Mar – 9 Apr
19 Apr
8-10 wk
4 Jun
14 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Apr
5 May
6-8 wk
29 May
16 Jun
0 wk
19 Jun
3 wk after