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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 9 of 10 years · 20 years of data
Frost-free season 104 days 19 May – 31 Aug
Probability that frost is over

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