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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 3 of 4 years · 20 years of data
Frost-free season 80 days 28 May – 16 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)
9 – 23 Apr
12 Jun
5-7 wk
28 May
17 Jul
0 wk
29 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
24 Jun
4-6 wk
28 May
22 Jul
0 wk
29 May
12 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
7 Jun
5-7 wk
28 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
20 May
3-4 wk
3 Jun
10 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
29 Apr – 6 May
28 May
4-5 wk
3 Jun
25 Jun
1 wk after
10 Jun
15 Jun
2 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)
Greenhouse
5 Mar – 2 Apr
20 Mar
8-12 wk
28 May
0 wk
28 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
25 May
28 May
0 wk
25 May
0 wk
Maize
Zea mays
Greenhouse
30 Apr – 7 May
10 May
3-4 wk
28 May
31 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
14 Jun
3-4 wk
30 May
5 Jul
0 wk
10 Jun
25 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
25 Jun
0 wk
28 May
15 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
7 Jun
5-7 wk
28 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
26 Apr
4-6 wk
7 Jun
1 wk after
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
10 Jun
5-7 wk
28 May
15 Jul
0 wk
29 May
5 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
6 – 13 May
12 Jun
3-4 wk
3 Jun
3 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
30 Apr – 7 May
16 May
3-4 wk
28 May
6 Jun
0 wk
3 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
29 Jun
3-4 wk
28 May
20 Jul
0 wk
29 May
10 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
9 May
2-4 wk
28 May
0 wk
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
25 May
28 May
0 wk
25 May
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
18 Jul
3-4 wk
28 May
8 Aug
0 wk
25 May
29 Jul
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
19 Apr
6-8 wk
28 May
31 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
27 May
2-4 wk
3 Jun
10 Jun
1 wk after
22 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
14 Jun
3-4 wk
28 May
5 Jul
0 wk
29 May
25 Jun
0 wk

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