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Rel. frost
Last spring frost (0°C) 27 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 169 days 27 Apr – 13 Oct
Probability that frost is over

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