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Rel. frost
Last spring frost (0°C) 19 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 210 days 19 Mar – 15 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)
28 Feb – 14 Mar
5-7 wk
18 Apr
5 wk after
15 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Feb – 8 Mar
4-6 wk
5 Apr
3 wk after
15 Mar
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
4 Feb – 4 Mar
8-12 wk
29 Apr
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Jan
5-7 wk
23 Feb
4 wk before
11 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
16 – 23 Apr
3-4 wk
14 May
8 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
25 Mar – 1 Apr
4-5 wk
29 Apr
6 wk after
1 Apr
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
1 – 8 Apr
3-4 wk
29 Apr
6 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Dec – 22 Jan
8-12 wk
19 Mar
Vid frost
1 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
6 – 13 Apr
3-4 wk
4 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Mar
3-4 wk
18 Apr
5 wk after
1 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Jan
5-7 wk
23 Feb
4 wk before
11 Mar
2 wk before
Potato
Solanum tuberosum
25 Mar – 8 Apr
4-6 wk
6 May
8 wk after
27 Mar
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Jan
5-7 wk
23 Feb
4 wk before
15 Mar
1 wk before
Pumpkin
Cucurbita pepo
Fleece
16 – 23 Apr
3-4 wk
14 May
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Mar
3-4 wk
18 Apr
5 wk after
1 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Feb – 8 Mar
4-6 wk
5 Apr
3 wk after
Lettuce
Lactuca sativa
12 – 19 Feb
3-4 wk
12 Mar
1 wk before
15 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Jan – 12 Feb
4-6 wk
12 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Feb
2-4 wk
4 Mar
3 wk before
11 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
15 Mar
1 wk before
Spinach
Spinacia oleracea
4 – 11 Feb
3-4 wk
4 Mar
3 wk before
6 Mar
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 Apr
4-6 wk
18 May
11 wk after
Tomato
Solanum lycopersicum
Fleece
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Fleece
1 – 15 Apr
2-4 wk
29 Apr
6 wk after
14 Apr
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Feb – 8 Mar
4-6 wk
5 Apr
3 wk after
Pea
Pisum sativum
4 – 11 Feb
3-4 wk
4 Mar
3 wk before
15 Mar
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
23 Mar – 6 Apr
4-6 wk
4 May
7 wk after
Lemon balm
Melissa officinalis
8 – 22 Jan
8-10 wk
19 Mar
Vid frost
13 Apr
4 wk after
Dill
Anethum graveolens
15 Mar
1 wk before
Chives
Allium schoenoprasum
29 Dec – 12 Jan
6-8 wk
23 Feb
4 wk before
15 Mar
1 wk before
Spearmint
Mentha spicata
10 Dec – 7 Jan
8-12 wk
4 Mar
3 wk before
13 Apr
4 wk after
Coriander
Coriandrum sativum
1 Apr
2 wk after
Sage
Salvia officinalis
7 – 21 Feb
8-10 wk
18 Apr
5 wk after
Thyme
Thymus vulgaris
25 Jan – 8 Feb
8-10 wk
5 Apr
3 wk after
Oregano
Origanum vulgare
28 Jan – 11 Feb
6-8 wk
25 Mar
1 wk after
13 Apr
4 wk after
Parsley
Petroselinum crispum
7 – 21 Jan
6-8 wk
4 Mar
3 wk before
15 Mar
1 wk before
Rosemary
Salvia rosmarinus
10 Jan – 7 Feb
10-14 wk
18 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
16 – 23 Apr
3-4 wk
14 May
8 wk after
Cornflower
Centaurea cyanus
4 Mar
3 wk before
15 Mar
1 wk before
Statice
Limonium sinuatum
Fleece
18 Feb – 4 Mar
8-10 wk
29 Apr
6 wk after
Sweet William
Dianthus barbatus
7 – 21 Jan
6-8 wk
4 Mar
3 wk before
27 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
4 May
7 wk after
Dahlia
Dahlia × pinnata
6 – 20 Mar
6-8 wk
1 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
6 Mar – 3 Apr
4-8 wk
1 May
7 wk after
13 Apr
4 wk after
Foxglove
Digitalis purpurea
24 Dec – 7 Jan
8-10 wk
4 Mar
3 wk before
1 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
19 Feb – 19 Mar
8-12 wk
14 May
8 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
Hyacinth bean
Dolichos lablab
Season too short
2 – 16 Apr
4-6 wk
14 May
8 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Feb
8-10 wk
18 Apr
5 wk after
Love in a mist
Nigella damascena
15 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
4 May
7 wk after
Tall verbena
Verbena bonariensis
24 Jan – 21 Feb
8-12 wk
18 Apr
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
20 Jan – 17 Feb
8-12 wk
14 Apr
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
4 Feb – 4 Mar
8-12 wk
29 Apr
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
Corn poppy
Papaver rhoeas
15 Mar
1 wk before
Snapdragon
Antirrhinum majus
18 Dec – 15 Jan
8-12 wk
12 Mar
1 wk before
27 Mar
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
18 Feb – 4 Mar
8-10 wk
29 Apr
6 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Jan
5-8 wk
4 Mar
3 wk before
Stock
Matthiola incana
15 – 29 Jan
6-8 wk
12 Mar
1 wk before
1 Apr
2 wk after
Wormwood
Artemisia absinthium
7 – 21 Jan
6-8 wk
4 Mar
3 wk before
1 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
18 Mar – 1 Apr
4-6 wk
29 Apr
6 wk after
Pansy
Viola × wittrockiana
15 – 29 Dec
8-10 wk
23 Feb
4 wk before
27 Mar
1 wk after
Petunia
Petunia
Fleece
4 Feb – 4 Mar
8-12 wk
29 Apr
6 wk after
Scabious
Scabiosa atropurpurea
21 Feb – 7 Mar
6-8 wk
18 Apr
5 wk after
29 Apr
6 wk after
Zinnia
Zinnia elegans
Fleece
18 Mar – 1 Apr
4-6 wk
29 Apr
6 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
25 Mar – 8 Apr
3-5 wk
29 Apr
6 wk after
Cosmos
Cosmos bipinnatus
Fleece
18 Mar – 1 Apr
4-6 wk
29 Apr
6 wk after
14 Apr
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
19 Feb – 19 Mar
8-12 wk
14 May
8 wk after
Bee balm
Monarda didyma
25 Dec – 22 Jan
8-12 wk
19 Mar
Vid frost
13 Apr
4 wk after
Yarrow
Achillea millefolium
7 – 21 Jan
6-8 wk
4 Mar
3 wk before
1 Apr
2 wk after
Safflower
Carthamus tinctorius
4 Mar
3 wk before
15 Mar
1 wk before
Iceland poppy
Papaver nudicaule
29 Dec – 12 Jan
6-8 wk
23 Feb
4 wk before
11 Mar
2 wk before
Bishop's flower
Ammi majus
16 Feb – 2 Mar
4-6 wk
30 Mar
2 wk after
1 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
4 – 18 Feb
10-12 wk
29 Apr
6 wk after
Sunflower
Helianthus annuus
Fleece
1 – 8 Apr
3-4 wk
29 Apr
6 wk after
1 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
14 Apr
4 wk after
Annual phlox
Phlox drummondii
27 Feb – 13 Mar
6-8 wk
24 Apr
6 wk after
29 Apr
6 wk after
Hollyhock
Alcea rosea
7 – 21 Jan
6-8 wk
4 Mar
3 wk before
1 Apr
2 wk after
Delphinium
Delphinium elatum
11 Jan – 8 Feb
8-12 wk
5 Apr
3 wk after
13 Apr
4 wk after
African marigold
Tagetes erecta
Fleece
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
Black-eyed Susan
Rudbeckia hirta
21 Feb – 7 Mar
6-8 wk
18 Apr
5 wk after
29 Apr
6 wk after
Woodland sage
Salvia nemorosa
14 – 28 Jan
8-10 wk
25 Mar
1 wk after
13 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
18 Feb – 18 Mar
6-10 wk
29 Apr
6 wk after
California goldenpoppy
Eschscholzia californica
15 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
18 Feb – 4 Mar
8-10 wk
29 Apr
6 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Jan
6-8 wk
4 Mar
3 wk before
1 Apr
2 wk after
Current date Soon Date passed