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Rel. frost
Last spring frost (0°C) 27 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 214 days 27 Mar – 27 Oct
Probability that frost is over

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