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Rel. frost
Last spring frost (0°C) 18 May Frost 1 of 10 years · 20 years of data
Frost-free season 155 days 18 May – 20 Oct
Probability that frost is over

90% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
Greenhouse
8 – 22 Apr
5-7 wk
27 May
1 wk after
14 Apr
5 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Apr – 10 May
4-6 wk
7 Jun
3 wk after
12 May
1 wk before
Chili pepper
Capsicum annuum
Season too short
5 Apr – 3 May
8-12 wk
28 Jun
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
28 Feb – 14 Mar
5-7 wk
18 Apr
4 wk before
5 May
2 wk before
Cucumber
Cucumis sativus
Greenhouse
31 May – 7 Jun
3-4 wk
28 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
Season too short
24 – 31 May
4-5 wk
28 Jun
6 wk after
31 May
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
31 May – 7 Jun
3-4 wk
28 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Feb – 23 Mar
8-12 wk
18 May
Vid frost
31 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 May
2 wk after
31 May
2 wk after
Sweetcorn
Zea mays
Fleece
5 – 12 Jun
3-4 wk
3 Jul
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 May
3-4 wk
19 Jun
5 wk after
31 May
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
28 Feb – 14 Mar
5-7 wk
18 Apr
4 wk before
5 May
2 wk before
Potato
Solanum tuberosum
11 – 25 Apr
4-6 wk
23 May
1 wk after
23 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Feb – 14 Mar
5-7 wk
18 Apr
4 wk before
12 May
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
31 May – 7 Jun
3-4 wk
28 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 May
3-4 wk
19 Jun
5 wk after
31 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Apr – 10 May
4-6 wk
7 Jun
3 wk after
Lettuce
Lactuca sativa
11 – 18 Apr
3-4 wk
9 May
1 wk before
12 May
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
4-6 wk
9 May
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
2-4 wk
5 May
2 wk before
5 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
1 wk before
12 May
1 wk before
Spinach
Spinacia oleracea
31 Mar – 7 Apr
3-4 wk
28 Apr
3 wk before
28 Apr
3 wk before
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
11 wk after
Tomato
Solanum lycopersicum
Greenhouse
18 Apr – 2 May
6-8 wk
13 Jun
4 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Fleece
31 May – 14 Jun
2-4 wk
28 Jun
6 wk after
13 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Apr – 10 May
4-6 wk
7 Jun
3 wk after
Pea
Pisum sativum
31 Mar – 7 Apr
3-4 wk
28 Apr
3 wk before
12 May
1 wk before
Current date Soon Date passed

Herbs

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Basil
Ocimum basilicum
Fleece
22 May – 5 Jun
4-6 wk
3 Jul
7 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
8-10 wk
18 May
Vid frost
13 Jun
4 wk after
Dill
Anethum graveolens
12 May
1 wk before
Chives
Allium schoenoprasum
21 Feb – 7 Mar
6-8 wk
18 Apr
4 wk before
12 May
1 wk before
Spearmint
Mentha spicata
3 Feb – 3 Mar
8-12 wk
28 Apr
3 wk before
13 Jun
4 wk after
Coriander
Coriandrum sativum
31 May
2 wk after
Sage
Salvia officinalis
10 – 24 Apr
8-10 wk
19 Jun
5 wk after
Thyme
Thymus vulgaris
29 Mar – 12 Apr
8-10 wk
7 Jun
3 wk after
Oregano
Origanum vulgare
1 – 15 Apr
6-8 wk
27 May
1 wk after
13 Jun
4 wk after
Parsley
Petroselinum crispum
3 – 17 Mar
6-8 wk
28 Apr
3 wk before
12 May
1 wk before
Rosemary
Salvia rosmarinus
Greenhouse
18 Feb – 18 Mar
10-14 wk
27 May
1 wk after
Current date Soon Date passed

Annual flowers

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Morning glory
Ipomoea tricolor
Season too short
15 – 22 Jun
3-4 wk
13 Jul
8 wk after
Cornflower
Centaurea cyanus
28 Apr
3 wk before
12 May
1 wk before
Statice
Limonium sinuatum
Greenhouse
4 – 18 Apr
8-10 wk
13 Jun
4 wk after
Sweet William
Dianthus barbatus
3 – 17 Mar
6-8 wk
28 Apr
3 wk before
23 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
18 Apr – 2 May
6-8 wk
13 Jun
4 wk after
20 Jun
5 wk after
Dahlia
Dahlia × pinnata
Greenhouse
12 – 26 Apr
6-8 wk
7 Jun
3 wk after
Dahlia (tubers)
Dahlia × pinnata
18 Apr – 16 May
4-8 wk
13 Jun
4 wk after
13 Jun
4 wk after
Foxglove
Digitalis purpurea
17 Feb – 3 Mar
8-10 wk
28 Apr
3 wk before
31 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
20 Apr – 18 May
8-12 wk
13 Jul
8 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
3 – 17 May
6-8 wk
28 Jun
6 wk after
Hyacinth bean
Dolichos lablab
Season too short
1 – 15 Jun
4-6 wk
13 Jul
8 wk after
Chinese lantern
Physalis alkekengi
Greenhouse
18 Mar – 1 Apr
8-10 wk
27 May
1 wk after
Love in a mist
Nigella damascena
12 May
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
18 Apr – 2 May
6-8 wk
13 Jun
4 wk after
20 Jun
5 wk after
Tall verbena
Verbena bonariensis
Greenhouse
4 Mar – 1 Apr
8-12 wk
27 May
1 wk after
Cardoon
Cynara cardunculus
Season too short
21 Mar – 18 Apr
8-12 wk
13 Jun
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
5 Apr – 3 May
8-12 wk
28 Jun
6 wk after
Globe amaranth
Gomphrena globosa
Season too short
3 – 17 May
6-8 wk
28 Jun
6 wk after
Corn poppy
Papaver rhoeas
12 May
1 wk before
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
8-12 wk
9 May
1 wk before
23 May
1 wk after
Flossflower
Ageratum houstonianum
Season too short
19 Apr – 3 May
8-10 wk
28 Jun
6 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Mar
5-8 wk
28 Apr
3 wk before
Stock
Matthiola incana
14 – 28 Mar
6-8 wk
9 May
1 wk before
31 May
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Mar
6-8 wk
28 Apr
3 wk before
31 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
17 – 31 May
4-6 wk
28 Jun
6 wk after
Pansy
Viola × wittrockiana
7 – 21 Feb
8-10 wk
18 Apr
4 wk before
23 May
1 wk after
Petunia
Petunia
Greenhouse
21 Mar – 18 Apr
8-12 wk
13 Jun
4 wk after
Scabious
Scabiosa atropurpurea
Greenhouse
1 – 15 Apr
6-8 wk
27 May
1 wk after
31 May
2 wk after
Zinnia
Zinnia elegans
Greenhouse
2 – 16 May
4-6 wk
13 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Season too short
24 May – 7 Jun
3-5 wk
28 Jun
6 wk after
Cosmos
Cosmos bipinnatus
Greenhouse
2 – 16 May
4-6 wk
13 Jun
4 wk after
31 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
20 Apr – 18 May
8-12 wk
13 Jul
8 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
8-12 wk
18 May
Vid frost
13 Jun
4 wk after
Yarrow
Achillea millefolium
3 – 17 Mar
6-8 wk
28 Apr
3 wk before
31 May
2 wk after
Safflower
Carthamus tinctorius
28 Apr
3 wk before
12 May
1 wk before
Iceland poppy
Papaver nudicaule
21 Feb – 7 Mar
6-8 wk
18 Apr
4 wk before
5 May
2 wk before
Bishop's flower
Ammi majus
21 Apr – 5 May
4-6 wk
2 Jun
2 wk after
31 May
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
5 – 19 Apr
10-12 wk
28 Jun
6 wk after
Sunflower
Helianthus annuus
Greenhouse
16 – 23 May
3-4 wk
13 Jun
4 wk after
17 May
China aster
Callistephus chinensis
Greenhouse
18 Apr – 2 May
6-8 wk
13 Jun
4 wk after
31 May
2 wk after
Annual phlox
Phlox drummondii
3 – 17 May
6-8 wk
28 Jun
6 wk after
28 Jun
6 wk after
Hollyhock
Alcea rosea
3 – 17 Mar
6-8 wk
28 Apr
3 wk before
31 May
2 wk after
Delphinium
Delphinium elatum
15 Mar – 12 Apr
8-12 wk
7 Jun
3 wk after
13 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
18 Apr – 2 May
6-8 wk
13 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
24 Apr – 8 May
6-8 wk
19 Jun
5 wk after
28 Jun
6 wk after
Woodland sage
Salvia nemorosa
18 Mar – 1 Apr
8-10 wk
27 May
1 wk after
13 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
19 Apr – 17 May
6-10 wk
28 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
12 May
1 wk before
Painted tongue
Salpiglossis sinuata
Greenhouse
4 – 18 Apr
8-10 wk
13 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Mar
6-8 wk
28 Apr
3 wk before
31 May
2 wk after
Current date Soon Date passed