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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 10 years · 20 years of data
Frost-free season 133 days 28 May – 8 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
18 Jun
5-7 wk
28 May
23 Jul
0 wk
21 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
30 Jun
4-6 wk
28 May
28 Jul
0 wk
21 May
18 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
13 Jun
5-7 wk
28 May
18 Jul
0 wk
16 May
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
6 – 13 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
Season too short
30 Apr – 7 May
3-4 wk
28 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
7 Jul
3-4 wk
30 May
28 Jul
0 wk
7 Jun
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
8 Jul
0 wk
16 May
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
13 Jun
5-7 wk
28 May
18 Jul
0 wk
16 May
8 Jul
2 wk before
Potato
Solanum tuberosum
21 Apr – 5 May
28 May
4-6 wk
2 Jun
25 Jun
1 wk after
2 Jun
15 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
23 Jun
5-7 wk
28 May
28 Jul
0 wk
21 May
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
6 – 13 May
28 May
3-4 wk
3 Jun
18 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
22 May
3-4 wk
30 May
12 Jun
0 wk
7 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
25 Jun
4-6 wk
28 May
23 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
12 Jul
3-4 wk
28 May
2 Aug
0 wk
21 May
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
25 Jun
4-6 wk
28 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Apr – 2 May
3 Jun
2-4 wk
16 May
17 Jun
2 wk before
16 May
7 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
27 Jul
3-4 wk
28 May
17 Aug
0 wk
10 May
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
2 – 16 Apr
6-8 wk
28 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
30 Apr – 14 May
30 May
2-4 wk
28 May
13 Jun
0 wk
7 Jun
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
25 Jun
4-6 wk
28 May
23 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
27 Jun
3-4 wk
28 May
18 Jul
0 wk
21 May
8 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
6 May
4-6 wk
3 Jun
3 Jun
1 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
23 May
8-10 wk
28 May
18 Jul
0 wk
18 Jun
8 Jul
3 wk after
Dill
Anethum graveolens
21 May
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
2 – 16 Apr
6 Jun
6-8 wk
28 May
18 Jul
0 wk
21 May
8 Jul
1 wk before
Spearmint
Mentha spicata
5 Mar – 2 Apr
23 May
8-12 wk
28 May
18 Jul
0 wk
18 Jun
8 Jul
3 wk after
Coriander
Coriandrum sativum
28 May
17 Aug
0 wk
7 Jun
7 Aug
1 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
8 May
8-10 wk
30 May
3 Jul
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
13 May
8-10 wk
28 May
8 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
27 May
6-8 wk
28 May
8 Jul
0 wk
18 Jun
28 Jun
3 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
27 May
6-8 wk
28 May
8 Jul
0 wk
21 May
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
9 Apr
10-14 wk
30 May
18 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
13 May
3-4 wk
3 Jun
3 Jun
1 wk after
Cornflower
Centaurea cyanus
28 May
18 Jul
0 wk
21 May
8 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
25 Mar – 8 Apr
18 Apr
8-10 wk
3 Jun
13 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
2 May
6-8 wk
3 Jun
13 Jun
1 wk after
13 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
6-8 wk
8 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
12 Apr – 10 May
28 May
4-8 wk
7 Jun
25 Jun
1 wk after
7 Jun
15 Jun
1 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
23 Apr
8-12 wk
29 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
8 – 22 Apr
12 May
6-8 wk
3 Jun
23 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
21 Mar – 4 Apr
23 Apr
8-10 wk
30 May
18 Jun
0 wk
Love in a mist
Nigella damascena
28 May
3 Jul
0 wk
21 May
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
8 – 22 Apr
22 Apr
6-8 wk
3 Jun
3 Jun
1 wk after
13 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
23 Apr
8-12 wk
30 May
18 Jun
0 wk
Cardoon
Cynara cardunculus
18 Mar – 15 Apr
24 Mar
8-12 wk
10 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
11 Mar – 8 Apr
29 Mar
8-12 wk
3 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
8 – 22 Apr
12 Apr
6-8 wk
3 Jun
1 wk after
Corn poppy
Papaver rhoeas
28 May
18 Jul
0 wk
21 May
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
13 May
8-12 wk
28 May
8 Jul
0 wk
2 Jun
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
1 – 15 Apr
28 Apr
8-10 wk
10 Jun
23 Jun
2 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
3 Jun
5-8 wk
28 May
8 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
6 Jun
6-8 wk
28 May
18 Jul
0 wk
7 Jun
8 Jul
1 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
7 May
6-8 wk
28 May
18 Jun
0 wk
7 Jun
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
4-6 wk
3 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
23 May
8-10 wk
28 May
18 Jul
0 wk
2 Jun
8 Jul
1 wk after
Petunia
Petunia
Fleece
11 Mar – 8 Apr
18 Apr
8-12 wk
3 Jun
13 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
7 May
6-8 wk
30 May
18 Jun
0 wk
3 Jul
5 wk after
Common zinnia
Zinnia elegans
Fleece
22 Apr – 6 May
6 May
4-6 wk
3 Jun
3 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
29 Apr – 13 May
13 May
3-5 wk
3 Jun
3 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
22 Apr – 6 May
28 May
4-6 wk
3 Jun
25 Jun
1 wk after
18 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
18 Mar – 15 Apr
28 Apr
8-12 wk
10 Jun
23 Jun
2 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
23 Apr
8-12 wk
28 May
18 Jun
0 wk
18 Jun
3 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
7 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Safflower
Carthamus tinctorius
28 May
18 Jun
0 wk
21 May
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
27 May
6-8 wk
28 May
8 Jul
0 wk
19 Apr
28 Jun
6 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
10 Jun
4-6 wk
28 May
8 Jul
0 wk
7 Jun
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
27 Mar
10-12 wk
3 Jun
5 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
17 Jun
3-4 wk
10 Jun
8 Jul
2 wk after
18 Jun
28 Jun
3 wk after
China aster
Callistephus chinensis
15 – 29 Apr
6 Jun
6-8 wk
10 Jun
18 Jul
2 wk after
3 Jul
8 Jul
5 wk after
Annual phlox
Phlox drummondii
8 – 22 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
23 Apr
8-12 wk
28 May
18 Jun
0 wk
18 Jun
3 wk after
African marigold
Tagetes erecta
Fleece
8 – 22 Apr
12 May
6-8 wk
3 Jun
23 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
27 May
6-8 wk
30 May
8 Jul
0 wk
3 Jul
5 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
13 Apr
8-10 wk
28 May
8 Jun
0 wk
18 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
25 Mar – 22 Apr
22 Apr
6-10 wk
3 Jun
3 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
28 May
18 Jul
0 wk
21 May
8 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
7 May
6-8 wk
28 May
18 Jun
0 wk
7 Jun
8 Jun
1 wk after