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Rel. frost
Last spring frost (0°C) 8 Apr Normal year · 20 years of data
Frost-free season 221 days 8 Apr – 15 Nov
Probability that frost is over

50% = 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)
20 Mar – 3 Apr
5-7 wk
8 May
5 wk after
4 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
4 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
11 Mar – 8 Apr
8-12 wk
3 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
25 Jan – 8 Feb
5-7 wk
15 Mar
4 wk before
31 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
6 – 13 May
3-4 wk
3 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 Apr – 6 May
4-5 wk
3 Jun
8 wk after
4 May
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
21 – 28 Apr
3-4 wk
19 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Jan – 11 Feb
8-12 wk
8 Apr
Vid frost
21 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
26 Apr – 3 May
3-4 wk
24 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
21 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
25 Jan – 8 Feb
5-7 wk
15 Mar
4 wk before
31 Mar
2 wk before
Potato
Solanum tuberosum
14 – 28 Apr
4-6 wk
26 May
8 wk after
16 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Jan – 8 Feb
5-7 wk
15 Mar
4 wk before
4 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
6 – 13 May
3-4 wk
3 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
21 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Lettuce
Lactuca sativa
4 – 11 Mar
3-4 wk
1 Apr
1 wk before
4 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Feb – 4 Mar
4-6 wk
1 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
2-4 wk
24 Mar
3 wk before
31 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 Apr
1 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
3-4 wk
24 Mar
3 wk before
26 Mar
3 wk before
Sweet potato
Ipomoea batatas
26 Apr – 10 May
4-6 wk
7 Jun
11 wk after
Tomato
Solanum lycopersicum
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
28 Apr – 12 May
2-4 wk
26 May
8 wk after
19 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Pea
Pisum sativum
24 Feb – 3 Mar
3-4 wk
24 Mar
3 wk before
4 Apr
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
12 – 26 Apr
4-6 wk
24 May
7 wk after
Lemon balm
Melissa officinalis
28 Jan – 11 Feb
8-10 wk
8 Apr
Vid frost
3 May
4 wk after
Dill
Anethum graveolens
4 Apr
1 wk before
Chives
Allium schoenoprasum
18 Jan – 1 Feb
6-8 wk
15 Mar
4 wk before
4 Apr
1 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
8-12 wk
24 Mar
3 wk before
3 May
4 wk after
Coriander
Coriandrum sativum
21 Apr
2 wk after
Sage
Salvia officinalis
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Thyme
Thymus vulgaris
14 – 28 Feb
8-10 wk
25 Apr
3 wk after
Oregano
Origanum vulgare
17 Feb – 3 Mar
6-8 wk
14 Apr
1 wk after
3 May
4 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
4 Apr
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
10-14 wk
8 May
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
Greenhouse
6 – 13 May
3-4 wk
3 Jun
8 wk after
Cornflower
Centaurea cyanus
24 Mar
3 wk before
4 Apr
1 wk before
Statice
Limonium sinuatum
17 – 31 Mar
8-10 wk
26 May
8 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
16 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
18 Jun
11 wk after
Dahlia
Dahlia × pinnata
26 Mar – 9 Apr
6-8 wk
21 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
26 Mar – 23 Apr
4-8 wk
21 May
7 wk after
3 May
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
3 wk before
21 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
11 Mar – 8 Apr
8-12 wk
3 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Love in a mist
Nigella damascena
4 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
24 Mar – 7 Apr
6-8 wk
19 May
6 wk after
24 May
7 wk after
Tall verbena
Verbena bonariensis
13 Feb – 13 Mar
8-12 wk
8 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
9 Feb – 9 Mar
8-12 wk
4 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
24 Feb – 24 Mar
8-12 wk
19 May
6 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Apr
6-8 wk
3 Jun
8 wk after
Corn poppy
Papaver rhoeas
4 Apr
1 wk before
Snapdragon
Antirrhinum majus
7 Jan – 4 Feb
8-12 wk
1 Apr
1 wk before
16 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
25 Mar – 8 Apr
8-10 wk
3 Jun
8 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
5-8 wk
24 Mar
3 wk before
Stock
Matthiola incana
4 – 18 Feb
6-8 wk
1 Apr
1 wk before
21 Apr
2 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
4-6 wk
3 Jun
8 wk after
Pansy
Viola × wittrockiana
4 – 18 Jan
8-10 wk
15 Mar
4 wk before
16 Apr
1 wk after
Petunia
Petunia
Fleece
24 Feb – 24 Mar
8-12 wk
19 May
6 wk after
Scabious
Scabiosa atropurpurea
13 – 27 Mar
6-8 wk
8 May
5 wk after
19 May
6 wk after
Zinnia
Zinnia elegans
14 – 28 Apr
4-6 wk
26 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 Apr – 13 May
3-5 wk
3 Jun
8 wk after
Cosmos
Cosmos bipinnatus
14 – 28 Apr
4-6 wk
26 May
8 wk after
19 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
11 Mar – 8 Apr
8-12 wk
3 Jun
8 wk after
Bee balm
Monarda didyma
14 Jan – 11 Feb
8-12 wk
8 Apr
Vid frost
3 May
4 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Safflower
Carthamus tinctorius
24 Mar
3 wk before
4 Apr
1 wk before
Iceland poppy
Papaver nudicaule
18 Jan – 1 Feb
6-8 wk
15 Mar
4 wk before
31 Mar
2 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
4-6 wk
19 Apr
2 wk after
21 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
24 Feb – 10 Mar
10-12 wk
19 May
6 wk after
Sunflower
Helianthus annuus
Fleece
21 – 28 Apr
3-4 wk
19 May
6 wk after
21 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
24 Mar – 7 Apr
6-8 wk
19 May
6 wk after
4 May
4 wk after
Annual phlox
Phlox drummondii
19 Mar – 2 Apr
6-8 wk
14 May
6 wk after
19 May
6 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Delphinium
Delphinium elatum
31 Jan – 28 Feb
8-12 wk
25 Apr
3 wk after
3 May
4 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
6-8 wk
26 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
6-8 wk
8 May
5 wk after
19 May
6 wk after
Woodland sage
Salvia nemorosa
3 – 17 Feb
8-10 wk
14 Apr
1 wk after
3 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
25 Mar – 22 Apr
6-10 wk
3 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
4 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
8-10 wk
26 May
8 wk after
Water forget-me-not
Myosotis scorpioides
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
21 Apr
2 wk after
Current date Soon Date passed