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Rel. frost
Last spring frost (0°C) 28 Apr Normal year · 20 years of data
Frost-free season 174 days 28 Apr – 19 Oct
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)
Fleece
29 Mar – 12 Apr
5-7 wk
17 May
3 wk after
24 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
4-6 wk
15 May
3 wk after
24 Apr
1 wk after
Chili pepper
Capsicum annuum
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Feb
5-7 wk
4 Apr
3 wk before
20 Apr
Vid frost
Cucumber
Cucumis sativus
Greenhouse
7 – 14 May
3-4 wk
4 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
Season too short
30 Apr – 7 May
4-5 wk
4 Jun
5 wk after
19 May
3 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 May
3-4 wk
16 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
3 Feb – 3 Mar
8-12 wk
28 Apr
Vid frost
11 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
8 May
1 wk after
Sweetcorn
Zea mays
Season too short
11 – 18 May
3-4 wk
8 Jun
6 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
3-4 wk
28 May
5 wk after
11 May
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Apr
Vid frost
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Feb
5-7 wk
4 Apr
3 wk before
20 Apr
Vid frost
Potato
Solanum tuberosum
4 – 18 May
4-6 wk
15 Jun
7 wk after
6 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Feb
5-7 wk
4 Apr
3 wk before
24 Apr
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
7 – 14 May
3-4 wk
4 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
30 Apr – 7 May
3-4 wk
28 May
5 wk after
11 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
4-6 wk
15 May
3 wk after
Lettuce
Lactuca sativa
24 – 31 Mar
3-4 wk
21 Apr
1 wk before
24 Apr
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Mar
4-6 wk
21 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
16 – 30 Mar
2-4 wk
13 Apr
2 wk before
20 Apr
Vid frost
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Apr
1 wk after
Spinach
Spinacia oleracea
16 – 23 Mar
3-4 wk
13 Apr
2 wk before
15 Apr
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
8 wk after
Tomato
Solanum lycopersicum
Fleece
9 – 23 Apr
6-8 wk
4 Jun
5 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Fleece
7 – 21 May
2-4 wk
4 Jun
5 wk after
2 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
4-6 wk
15 May
3 wk after
Pea
Pisum sativum
16 – 23 Mar
3-4 wk
13 Apr
2 wk before
24 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
27 Apr – 11 May
4-6 wk
8 Jun
6 wk after
Lemon balm
Melissa officinalis
17 Feb – 3 Mar
8-10 wk
28 Apr
Vid frost
23 May
5 wk after
Dill
Anethum graveolens
24 Apr
1 wk after
Chives
Allium schoenoprasum
7 – 21 Feb
6-8 wk
4 Apr
3 wk before
24 Apr
1 wk after
Spearmint
Mentha spicata
19 Jan – 16 Feb
8-12 wk
13 Apr
2 wk before
23 May
5 wk after
Coriander
Coriandrum sativum
11 May
3 wk after
Sage
Salvia officinalis
19 Mar – 2 Apr
8-10 wk
28 May
5 wk after
Thyme
Thymus vulgaris
6 – 20 Mar
8-10 wk
15 May
3 wk after
Oregano
Origanum vulgare
9 – 23 Mar
6-8 wk
4 May
1 wk after
23 May
5 wk after
Parsley
Petroselinum crispum
16 Feb – 2 Mar
6-8 wk
13 Apr
2 wk before
24 Apr
1 wk after
Rosemary
Salvia rosmarinus
Fleece
8 Feb – 8 Mar
10-14 wk
17 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
16 – 23 May
3-4 wk
13 Jun
7 wk after
Cornflower
Centaurea cyanus
13 Apr
2 wk before
24 Apr
1 wk after
Statice
Limonium sinuatum
Greenhouse
14 – 28 Mar
8-10 wk
23 May
4 wk after
Sweet William
Dianthus barbatus
16 Feb – 2 Mar
6-8 wk
13 Apr
2 wk before
6 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
28 Mar – 11 Apr
6-8 wk
23 May
4 wk after
8 Jun
6 wk after
Dahlia
Dahlia × pinnata
Fleece
4 – 18 Apr
6-8 wk
30 May
5 wk after
Dahlia (tubers)
Dahlia × pinnata
Fleece
24 Mar – 21 Apr
4-8 wk
19 May
3 wk after
19 May
3 wk after
Foxglove
Digitalis purpurea
2 – 16 Feb
8-10 wk
13 Apr
2 wk before
11 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
21 Mar – 18 Apr
8-12 wk
13 Jun
7 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
9 – 23 Apr
6-8 wk
4 Jun
5 wk after
Hyacinth bean
Dolichos lablab
Season too short
2 – 16 May
4-6 wk
13 Jun
7 wk after
Chinese lantern
Physalis alkekengi
Fleece
8 – 22 Mar
8-10 wk
17 May
3 wk after
Love in a mist
Nigella damascena
24 Apr
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
28 Mar – 11 Apr
6-8 wk
23 May
4 wk after
8 Jun
6 wk after
Tall verbena
Verbena bonariensis
Fleece
22 Feb – 22 Mar
8-12 wk
17 May
3 wk after
Cardoon
Cynara cardunculus
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Season too short
9 – 23 Apr
6-8 wk
4 Jun
5 wk after
Corn poppy
Papaver rhoeas
24 Apr
1 wk after
Snapdragon
Antirrhinum majus
27 Jan – 24 Feb
8-12 wk
21 Apr
1 wk before
6 May
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
26 Mar – 9 Apr
8-10 wk
4 Jun
5 wk after
Sweet pea
Lathyrus odoratus
16 Feb – 9 Mar
5-8 wk
13 Apr
2 wk before
Stock
Matthiola incana
24 Feb – 10 Mar
6-8 wk
21 Apr
1 wk before
11 May
3 wk after
Wormwood
Artemisia absinthium
16 Feb – 2 Mar
6-8 wk
13 Apr
2 wk before
11 May
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
5 wk after
Pansy
Viola × wittrockiana
24 Jan – 7 Feb
8-10 wk
4 Apr
3 wk before
6 May
2 wk after
Petunia
Petunia
Greenhouse
28 Feb – 28 Mar
8-12 wk
23 May
4 wk after
Scabious
Scabiosa atropurpurea
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
3 wk after
2 Jun
5 wk after
Zinnia
Zinnia elegans
Fleece
23 Apr – 7 May
4-6 wk
4 Jun
5 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
30 Apr – 14 May
3-5 wk
4 Jun
5 wk after
Cosmos
Cosmos bipinnatus
Greenhouse
11 – 25 Apr
4-6 wk
23 May
4 wk after
19 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
21 Mar – 18 Apr
8-12 wk
13 Jun
7 wk after
Bee balm
Monarda didyma
3 Feb – 3 Mar
8-12 wk
28 Apr
Vid frost
23 May
5 wk after
Yarrow
Achillea millefolium
16 Feb – 2 Mar
6-8 wk
13 Apr
2 wk before
11 May
3 wk after
Safflower
Carthamus tinctorius
13 Apr
2 wk before
24 Apr
1 wk after
Iceland poppy
Papaver nudicaule
7 – 21 Feb
6-8 wk
4 Apr
3 wk before
20 Apr
Vid frost
Bishop's flower
Ammi majus
28 Mar – 11 Apr
4-6 wk
9 May
1 wk after
11 May
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
12 – 26 Mar
10-12 wk
4 Jun
5 wk after
Sunflower
Helianthus annuus
Greenhouse
25 Apr – 2 May
3-4 wk
23 May
4 wk after
8 May
1 wk after
China aster
Callistephus chinensis
Greenhouse
28 Mar – 11 Apr
6-8 wk
23 May
4 wk after
19 May
3 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
6-8 wk
3 Jun
5 wk after
8 Jun
7 wk after
Hollyhock
Alcea rosea
16 Feb – 2 Mar
6-8 wk
13 Apr
2 wk before
11 May
3 wk after
Delphinium
Delphinium elatum
20 Feb – 20 Mar
8-12 wk
15 May
3 wk after
23 May
5 wk after
African marigold
Tagetes erecta
Fleece
9 – 23 Apr
6-8 wk
4 Jun
5 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
6-8 wk
28 May
5 wk after
8 Jun
7 wk after
Woodland sage
Salvia nemorosa
23 Feb – 9 Mar
8-10 wk
4 May
1 wk after
23 May
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
26 Mar – 23 Apr
6-10 wk
4 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
24 Apr
1 wk after
Painted tongue
Salpiglossis sinuata
Greenhouse
14 – 28 Mar
8-10 wk
23 May
4 wk after
Water forget-me-not
Myosotis scorpioides
16 Feb – 2 Mar
6-8 wk
13 Apr
2 wk before
11 May
3 wk after
Current date Soon Date passed