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Method
Rel. frost
Last spring frost (0°C) 27 Jun Normal year · 20 years of data
Frost-free season 57 days 27 Jun – 23 Aug
Probability that frost is over

50% = 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 May
10 Jun
5-7 wk
27 Jun
15 Jul
0 wk
28 Jun
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 May
22 Jun
4-6 wk
27 Jun
20 Jul
0 wk
28 Jun
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
15 Apr – 13 May
8-12 wk
8 Jul
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 May
5 Jun
5-7 wk
27 Jun
10 Jul
0 wk
27 Jun
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
10 – 17 Jun
3-4 wk
8 Jul
2 wk after
Florence Fennel
Foeniculum vulgare
Season too short
3 – 10 Jun
4-5 wk
8 Jul
2 wk after
10 Jul
2 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 Jul
3-4 wk
7 Aug
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
4 Apr – 2 May
8-12 wk
27 Jun
0 wk
27 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
18 Jun
1 wk before
18 Jun
1 wk before
Maize
Zea mays
Season too short
3 – 10 Jun
3-4 wk
1 Jul
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Jun
13 Jun
3-4 wk
3 Jul
4 Jul
1 wk after
10 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Jun
0 wk
27 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 May
5 Jun
5-7 wk
27 Jun
10 Jul
0 wk
27 Jun
30 Jun
0 wk
Potato
Solanum tuberosum
Season too short
13 – 27 May
4-6 wk
24 Jun
0 wk
24 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 May
9 Jun
5-7 wk
27 Jun
14 Jul
0 wk
28 Jun
4 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
10 – 17 Jun
3-4 wk
8 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
0 wk
27 Jun
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 May
17 Jun
4-6 wk
27 Jun
15 Jul
0 wk
Lettuce
Lactuca sativa
30 May – 6 Jun
28 Jun
3-4 wk
27 Jun
19 Jul
0 wk
28 Jun
9 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 May
17 Jun
4-6 wk
27 Jun
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
14 – 28 May
23 May
2-4 wk
11 Jun
2 wk before
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
18 Jun
1 wk before
18 Jun
1 wk before
Spinach
Spinacia oleracea
30 May – 6 Jun
19 Jul
3-4 wk
27 Jun
9 Aug
0 wk
24 Jun
30 Jul
0 wk
Sweet potato
Ipomoea batatas
22 Jul – 5 Aug
4-6 wk
2 Sep
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
6 – 20 May
6-8 wk
1 Jul
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
3 – 17 Jun
2-4 wk
1 Jul
1 wk after
10 Jul
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 May
17 Jun
4-6 wk
27 Jun
15 Jul
0 wk
Garden pea
Pisum sativum
30 May – 6 Jun
13 Jun
3-4 wk
27 Jun
4 Jul
0 wk
28 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
Season too short
27 May – 10 Jun
4-6 wk
8 Jul
2 wk after
Lemon balm
Melissa officinalis
18 Apr – 2 May
9 May
8-10 wk
27 Jun
4 Jul
0 wk
22 Jul
4 wk after
Dill
Anethum graveolens
28 Jun
4 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 May
29 May
6-8 wk
27 Jun
10 Jul
0 wk
28 Jun
30 Jun
0 wk
Spearmint
Mentha spicata
4 Apr – 2 May
15 May
8-12 wk
27 Jun
10 Jul
0 wk
22 Jul
4 wk after
Coriander
Coriandrum sativum
27 Jun
24 Jul
0 wk
10 Jul
14 Jul
2 wk after
Garden sage
Salvia officinalis
24 Apr – 8 May
30 Apr
8-10 wk
3 Jul
1 wk after
Common thyme
Thymus vulgaris
18 Apr – 2 May
5 May
8-10 wk
27 Jun
30 Jun
0 wk
Oregano
Origanum vulgare
2 – 16 May
19 May
6-8 wk
27 Jun
30 Jun
0 wk
22 Jul
4 wk after
Parsley
Petroselinum crispum
2 – 16 May
19 May
6-8 wk
27 Jun
30 Jun
0 wk
28 Jun
0 wk
Rosemary
Salvia rosmarinus
Season too short
21 Mar – 18 Apr
30 Mar
10-14 wk
27 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
Season too short
10 – 17 Jun
3-4 wk
8 Jul
2 wk after
Cornflower
Centaurea cyanus
27 Jun
10 Jul
0 wk
28 Jun
30 Jun
0 wk
Statice
Limonium sinuatum
Season too short
22 Apr – 6 May
8-10 wk
1 Jul
1 wk after
Sweet William
Dianthus barbatus
2 – 16 May
6-8 wk
27 Jun
0 wk
7 Jul
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
6 – 20 May
6-8 wk
1 Jul
1 wk after
29 Jul
5 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
2 – 16 May
6-8 wk
27 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
8 May – 5 Jun
14 May
4-8 wk
3 Jul
1 wk after
3 Jul
1 wk after
Foxglove
Digitalis purpurea
18 Apr – 2 May
8-10 wk
27 Jun
0 wk
10 Jul
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
15 Apr – 13 May
25 May
8-12 wk
8 Jul
20 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
6 – 20 May
7 May
6-8 wk
1 Jul
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 Jun
4-6 wk
17 Jul
3 wk after
Chinese lantern
Physalis alkekengi
Season too short
18 Apr – 2 May
8-10 wk
27 Jun
0 wk
Love in a mist
Nigella damascena
27 Jun
0 wk
28 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
6 – 20 May
6-8 wk
1 Jul
1 wk after
29 Jul
5 wk after
Purple-top vervain
Verbena bonariensis
Season too short
4 Apr – 2 May
15 Apr
8-12 wk
27 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
8 Apr – 6 May
8-12 wk
1 Jul
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
15 Apr – 13 May
8-12 wk
8 Jul
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
13 – 27 May
6-8 wk
8 Jul
2 wk after
Corn poppy
Papaver rhoeas
27 Jun
4 Jul
0 wk
28 Jun
0 wk
Snapdragon
Antirrhinum majus
4 Apr – 2 May
29 Apr
8-12 wk
27 Jun
0 wk
7 Jul
1 wk after
Flossflower
Ageratum houstonianum
Season too short
29 Apr – 13 May
8-10 wk
8 Jul
2 wk after
Sweet pea
Lathyrus odoratus
2 – 23 May
26 May
5-8 wk
27 Jun
30 Jun
0 wk
Stock
Matthiola incana
2 – 16 May
23 May
6-8 wk
27 Jun
4 Jul
0 wk
10 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 May
6-8 wk
27 Jun
0 wk
10 Jul
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
27 May – 10 Jun
4-6 wk
8 Jul
2 wk after
Garden pansy
Viola × wittrockiana
18 Apr – 2 May
15 May
8-10 wk
27 Jun
10 Jul
0 wk
7 Jul
1 wk after
Petunia
Petunia
Season too short
8 Apr – 6 May
13 Apr
8-12 wk
1 Jul
1 wk after
Sweet Scabious
Scabiosa atropurpurea
Season too short
2 – 16 May
6-8 wk
27 Jun
0 wk
10 Jul
2 wk after
Common zinnia
Zinnia elegans
Season too short
20 May – 3 Jun
4-6 wk
1 Jul
1 wk after
Common morning glory
Ipomoea purpurea
Season too short
3 – 17 Jun
3-5 wk
8 Jul
2 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
20 May – 3 Jun
4-6 wk
1 Jul
1 wk after
10 Jul
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
24 Apr – 22 May
8-12 wk
17 Jul
3 wk after
Bee balm
Monarda didyma
Greenhouse
4 Apr – 2 May
15 Apr
8-12 wk
27 Jun
0 wk
3 Jul
1 wk after
Yarrow
Achillea millefolium
Season too short
2 – 16 May
6-8 wk
27 Jun
0 wk
27 Jun
0 wk
Safflower
Carthamus tinctorius
Fleece
27 Jun
0 wk
24 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 May
19 May
6-8 wk
27 Jun
30 Jun
0 wk
11 Jun
20 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 May
27 May
4-6 wk
27 Jun
0 wk
10 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
15 – 29 Apr
10-12 wk
8 Jul
2 wk after
Sunflower
Helianthus annuus
Greenhouse
3 – 10 Jun
7 Jun
3-4 wk
1 Jul
1 wk after
3 Jul
1 wk after
China aster
Callistephus chinensis
Greenhouse
6 – 20 May
27 May
6-8 wk
1 Jul
8 Jul
1 wk after
10 Jul
2 wk after
Annual phlox
Phlox drummondii
Greenhouse
2 – 16 May
7 May
6-8 wk
27 Jun
0 wk
10 Jul
2 wk after
Hollyhock
Alcea rosea
2 – 16 May
6-8 wk
27 Jun
0 wk
10 Jul
2 wk after
Alpine delphinium
Delphinium elatum
Greenhouse
4 Apr – 2 May
15 Apr
8-12 wk
27 Jun
0 wk
3 Jul
1 wk after
African marigold
Tagetes erecta
Season too short
6 – 20 May
7 May
6-8 wk
1 Jul
1 wk after
Black-eyed Susan
Rudbeckia hirta
Fleece
2 – 16 May
9 May
6-8 wk
27 Jun
0 wk
22 Jul
4 wk after
Wood sage
Salvia nemorosa
Season too short
18 Apr – 2 May
8-10 wk
27 Jun
0 wk
3 Jul
1 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
29 Apr – 27 May
6-10 wk
8 Jul
2 wk after
California goldenpoppy
Eschscholzia californica
27 Jun
30 Jun
0 wk
28 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Season too short
22 Apr – 6 May
29 Apr
8-10 wk
1 Jul
1 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 May
6-8 wk
27 Jun
0 wk
10 Jul
2 wk after