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Rel. frost
Last spring frost (0°C) 18 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 165 days 18 Apr – 30 Sep
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
19 Mar – 2 Apr
5-7 wk
7 May
3 wk after
14 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
4-6 wk
5 May
3 wk after
14 Apr
1 wk after
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
8-12 wk
25 May
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Feb
5-7 wk
25 Mar
3 wk before
10 Apr
Vid frost
Cucumber
Cucumis sativus
Greenhouse
27 Apr – 4 May
3-4 wk
25 May
5 wk after
Florence Fennel
Foeniculum vulgare
Season too short
20 – 27 Apr
4-5 wk
25 May
5 wk after
9 May
3 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 May
3-4 wk
6 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
24 Jan – 21 Feb
8-12 wk
18 Apr
Vid frost
1 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 May
3 wk after
Sweetcorn
Zea mays
Season too short
1 – 8 May
3-4 wk
29 May
6 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
3-4 wk
18 May
5 wk after
1 May
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 Apr
Vid frost
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Feb
5-7 wk
25 Mar
3 wk before
10 Apr
Vid frost
Potato
Solanum tuberosum
24 Apr – 8 May
4-6 wk
5 Jun
7 wk after
26 Apr
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Feb
5-7 wk
25 Mar
3 wk before
14 Apr
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
27 Apr – 4 May
3-4 wk
25 May
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
3-4 wk
18 May
5 wk after
1 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
4-6 wk
5 May
3 wk after
Lettuce
Lactuca sativa
14 – 21 Mar
3-4 wk
11 Apr
1 wk before
14 Apr
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Feb – 14 Mar
4-6 wk
11 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Mar
2-4 wk
3 Apr
2 wk before
10 Apr
Vid frost
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 Apr
1 wk after
Spinach
Spinacia oleracea
6 – 13 Mar
3-4 wk
3 Apr
2 wk before
5 Apr
1 wk before
Sweet potato
Ipomoea batatas
6 – 20 May
4-6 wk
17 Jun
8 wk after
Tomato
Solanum lycopersicum
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Greenhouse
15 – 29 Apr
2-4 wk
13 May
4 wk after
9 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
4-6 wk
5 May
3 wk after
Pea
Pisum sativum
6 – 13 Mar
3-4 wk
3 Apr
2 wk before
14 Apr
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
17 Apr – 1 May
4-6 wk
29 May
6 wk after
Lemon balm
Melissa officinalis
7 – 21 Feb
8-10 wk
18 Apr
Vid frost
13 May
5 wk after
Dill
Anethum graveolens
14 Apr
1 wk after
Chives
Allium schoenoprasum
28 Jan – 11 Feb
6-8 wk
25 Mar
3 wk before
14 Apr
1 wk after
Spearmint
Mentha spicata
9 Jan – 6 Feb
8-12 wk
3 Apr
2 wk before
13 May
5 wk after
Coriander
Coriandrum sativum
1 May
3 wk after
Sage
Salvia officinalis
9 – 23 Mar
8-10 wk
18 May
5 wk after
Thyme
Thymus vulgaris
24 Feb – 10 Mar
8-10 wk
5 May
3 wk after
Oregano
Origanum vulgare
27 Feb – 13 Mar
6-8 wk
24 Apr
1 wk after
13 May
5 wk after
Parsley
Petroselinum crispum
6 – 20 Feb
6-8 wk
3 Apr
2 wk before
14 Apr
1 wk after
Rosemary
Salvia rosmarinus
Fleece
29 Jan – 26 Feb
10-14 wk
7 May
3 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
6 – 13 May
3-4 wk
3 Jun
7 wk after
Cornflower
Centaurea cyanus
3 Apr
2 wk before
14 Apr
1 wk after
Statice
Limonium sinuatum
Greenhouse
4 – 18 Mar
8-10 wk
13 May
4 wk after
Sweet William
Dianthus barbatus
6 – 20 Feb
6-8 wk
3 Apr
2 wk before
26 Apr
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
29 May
6 wk after
Dahlia
Dahlia × pinnata
Fleece
25 Mar – 8 Apr
6-8 wk
20 May
5 wk after
Dahlia (tubers)
Dahlia × pinnata
Fleece
14 Mar – 11 Apr
4-8 wk
9 May
3 wk after
9 May
3 wk after
Foxglove
Digitalis purpurea
23 Jan – 6 Feb
8-10 wk
3 Apr
2 wk before
1 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
11 Mar – 8 Apr
8-12 wk
3 Jun
7 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
7 wk after
Chinese lantern
Physalis alkekengi
Fleece
26 Feb – 12 Mar
8-10 wk
7 May
3 wk after
Love in a mist
Nigella damascena
14 Apr
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
29 May
6 wk after
Tall verbena
Verbena bonariensis
Fleece
12 Feb – 12 Mar
8-12 wk
7 May
3 wk after
Cardoon
Cynara cardunculus
Season too short
18 Feb – 18 Mar
8-12 wk
13 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
2 – 30 Mar
8-12 wk
25 May
5 wk after
Globe amaranth
Gomphrena globosa
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
5 wk after
Corn poppy
Papaver rhoeas
14 Apr
1 wk after
Snapdragon
Antirrhinum majus
17 Jan – 14 Feb
8-12 wk
11 Apr
1 wk before
26 Apr
2 wk after
Flossflower
Ageratum houstonianum
Season too short
16 – 30 Mar
8-10 wk
25 May
5 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Feb
5-8 wk
3 Apr
2 wk before
Stock
Matthiola incana
14 – 28 Feb
6-8 wk
11 Apr
1 wk before
1 May
3 wk after
Wormwood
Artemisia absinthium
6 – 20 Feb
6-8 wk
3 Apr
2 wk before
1 May
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
13 – 27 Apr
4-6 wk
25 May
5 wk after
Pansy
Viola × wittrockiana
14 – 28 Jan
8-10 wk
25 Mar
3 wk before
26 Apr
2 wk after
Petunia
Petunia
Greenhouse
18 Feb – 18 Mar
8-12 wk
13 May
4 wk after
Scabious
Scabiosa atropurpurea
Fleece
12 – 26 Mar
6-8 wk
7 May
3 wk after
23 May
5 wk after
Zinnia
Zinnia elegans
Greenhouse
1 – 15 Apr
4-6 wk
13 May
4 wk after
Common morning glory
Ipomoea purpurea
Season too short
20 Apr – 4 May
3-5 wk
25 May
5 wk after
Cosmos
Cosmos bipinnatus
Greenhouse
1 – 15 Apr
4-6 wk
13 May
4 wk after
9 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
7 wk after
Bee balm
Monarda didyma
24 Jan – 21 Feb
8-12 wk
18 Apr
Vid frost
13 May
5 wk after
Yarrow
Achillea millefolium
6 – 20 Feb
6-8 wk
3 Apr
2 wk before
1 May
3 wk after
Safflower
Carthamus tinctorius
3 Apr
2 wk before
14 Apr
1 wk after
Iceland poppy
Papaver nudicaule
28 Jan – 11 Feb
6-8 wk
25 Mar
3 wk before
10 Apr
Vid frost
Bishop's flower
Ammi majus
18 Mar – 1 Apr
4-6 wk
29 Apr
1 wk after
1 May
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
2 – 16 Mar
10-12 wk
25 May
5 wk after
Sunflower
Helianthus annuus
Greenhouse
15 – 22 Apr
3-4 wk
13 May
4 wk after
28 Apr
1 wk after
China aster
Callistephus chinensis
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
9 May
3 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
6-8 wk
24 May
5 wk after
29 May
7 wk after
Hollyhock
Alcea rosea
6 – 20 Feb
6-8 wk
3 Apr
2 wk before
1 May
3 wk after
Delphinium
Delphinium elatum
10 Feb – 10 Mar
8-12 wk
5 May
3 wk after
13 May
5 wk after
African marigold
Tagetes erecta
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
4 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
6-8 wk
18 May
5 wk after
29 May
7 wk after
Woodland sage
Salvia nemorosa
13 – 27 Feb
8-10 wk
24 Apr
1 wk after
13 May
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
16 Mar – 13 Apr
6-10 wk
25 May
5 wk after
California goldenpoppy
Eschscholzia californica
14 Apr
1 wk after
Painted tongue
Salpiglossis sinuata
Greenhouse
4 – 18 Mar
8-10 wk
13 May
4 wk after
Water forget-me-not
Myosotis scorpioides
6 – 20 Feb
6-8 wk
3 Apr
2 wk before
1 May
3 wk after
Current date Soon Date passed