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Rel. frost
Last spring frost (0°C) 8 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 185 days 8 Apr – 10 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)
Fleece
4 – 18 Mar
5-7 wk
22 Apr
2 wk after
21 Mar
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Mar
4-6 wk
22 Apr
2 wk after
1 Apr
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
18 Feb – 18 Mar
8-12 wk
13 May
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
24 Jan – 7 Feb
5-7 wk
14 Mar
4 wk before
27 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
27 Apr – 4 May
3-4 wk
25 May
7 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
8 – 15 Apr
4-5 wk
13 May
5 wk after
18 Apr
1 wk after
Butter bean
Phaseolus lunatus
Greenhouse
16 – 23 Apr
3-4 wk
14 May
5 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Jan – 11 Feb
8-12 wk
8 Apr
Vid frost
18 Apr
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
1 wk after
18 Apr
1 wk after
Sweetcorn
Zea mays
Fleece
26 Apr – 3 May
3-4 wk
24 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Apr
3-4 wk
7 May
4 wk after
18 Apr
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
24 Jan – 7 Feb
5-7 wk
14 Mar
4 wk before
27 Mar
2 wk before
Potato
Solanum tuberosum
2 – 16 Mar
4-6 wk
13 Apr
1 wk after
13 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Jan – 7 Feb
5-7 wk
14 Mar
4 wk before
1 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
27 Apr – 4 May
3-4 wk
25 May
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Apr
3-4 wk
7 May
4 wk after
18 Apr
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Mar
4-6 wk
22 Apr
2 wk after
Lettuce
Lactuca sativa
4 – 11 Mar
3-4 wk
1 Apr
1 wk before
1 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)
27 Feb – 13 Mar
2-4 wk
27 Mar
2 wk before
27 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Apr
1 wk before
1 Apr
1 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
3-4 wk
24 Mar
2 wk before
21 Mar
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 May
4-6 wk
16 Jun
10 wk after
Tomato
Solanum lycopersicum
Fleece
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
27 Apr – 11 May
2-4 wk
25 May
7 wk after
14 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Mar
4-6 wk
22 Apr
2 wk after
Pea
Pisum sativum
24 Feb – 3 Mar
3-4 wk
24 Mar
2 wk before
1 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
29 Apr
3 wk after
Dill
Anethum graveolens
1 Apr
1 wk before
Chives
Allium schoenoprasum
17 – 31 Jan
6-8 wk
14 Mar
4 wk before
1 Apr
1 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
8-12 wk
24 Mar
2 wk before
29 Apr
3 wk after
Coriander
Coriandrum sativum
18 Apr
1 wk after
Sage
Salvia officinalis
26 Feb – 12 Mar
8-10 wk
7 May
4 wk after
Thyme
Thymus vulgaris
11 – 25 Feb
8-10 wk
22 Apr
2 wk after
Oregano
Origanum vulgare
17 Feb – 3 Mar
6-8 wk
14 Apr
1 wk after
29 Apr
3 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
6-8 wk
24 Mar
2 wk before
1 Apr
1 wk before
Rosemary
Salvia rosmarinus
29 Jan – 26 Feb
10-14 wk
7 May
4 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
27 Apr – 4 May
3-4 wk
25 May
7 wk after
Cornflower
Centaurea cyanus
24 Mar
2 wk before
1 Apr
1 wk before
Statice
Limonium sinuatum
Fleece
4 – 18 Mar
8-10 wk
13 May
5 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
2 wk before
13 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
24 May
7 wk after
Dahlia
Dahlia × pinnata
24 Mar – 7 Apr
6-8 wk
19 May
6 wk after
Dahlia (tubers)
Dahlia × pinnata
4 Mar – 1 Apr
4-8 wk
29 Apr
3 wk after
29 Apr
3 wk after
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
2 wk before
18 Apr
1 wk after
Busy lizzie
Impatiens walleriana
10 Mar – 7 Apr
8-12 wk
2 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
30 Mar – 13 Apr
6-8 wk
25 May
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Apr
4-6 wk
25 May
7 wk after
Chinese lantern
Physalis alkekengi
26 Feb – 12 Mar
8-10 wk
7 May
4 wk after
Love in a mist
Nigella damascena
1 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
24 May
7 wk after
Tall verbena
Verbena bonariensis
12 Feb – 12 Mar
8-12 wk
7 May
4 wk after
Cardoon
Cynara cardunculus
Season too short
5 Feb – 5 Mar
8-12 wk
30 Apr
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
18 Feb – 18 Mar
8-12 wk
13 May
5 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
Corn poppy
Papaver rhoeas
1 Apr
1 wk before
Snapdragon
Antirrhinum majus
7 Jan – 4 Feb
8-12 wk
1 Apr
1 wk before
13 Apr
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
4 – 18 Mar
8-10 wk
13 May
5 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
5-8 wk
24 Mar
2 wk before
Stock
Matthiola incana
4 – 18 Feb
6-8 wk
1 Apr
1 wk before
18 Apr
1 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
6-8 wk
24 Mar
2 wk before
18 Apr
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
1 – 15 Apr
4-6 wk
13 May
5 wk after
Pansy
Viola × wittrockiana
3 – 17 Jan
8-10 wk
14 Mar
4 wk before
13 Apr
1 wk after
Petunia
Petunia
Fleece
18 Feb – 18 Mar
8-12 wk
13 May
5 wk after
Scabious
Scabiosa atropurpurea
12 – 26 Mar
6-8 wk
7 May
4 wk after
14 May
5 wk after
Zinnia
Zinnia elegans
Fleece
1 – 15 Apr
4-6 wk
13 May
5 wk after
Common morning glory
Ipomoea purpurea
Fleece
20 Apr – 4 May
3-5 wk
25 May
7 wk after
Cosmos
Cosmos bipinnatus
Fleece
1 – 15 Apr
4-6 wk
13 May
5 wk after
29 Apr
3 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
2 – 30 Mar
8-12 wk
25 May
7 wk after
Bee balm
Monarda didyma
14 Jan – 11 Feb
8-12 wk
8 Apr
Vid frost
29 Apr
3 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
6-8 wk
24 Mar
2 wk before
18 Apr
1 wk after
Safflower
Carthamus tinctorius
24 Mar
2 wk before
1 Apr
1 wk before
Iceland poppy
Papaver nudicaule
17 – 31 Jan
6-8 wk
14 Mar
4 wk before
27 Mar
2 wk before
Bishop's flower
Ammi majus
7 – 21 Mar
4-6 wk
18 Apr
1 wk after
18 Apr
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
18 Feb – 4 Mar
10-12 wk
13 May
5 wk after
Sunflower
Helianthus annuus
Fleece
15 – 22 Apr
3-4 wk
13 May
5 wk after
18 Apr
1 wk after
China aster
Callistephus chinensis
Fleece
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
29 Apr
3 wk after
Annual phlox
Phlox drummondii
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
14 May
5 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
2 wk before
18 Apr
1 wk after
Delphinium
Delphinium elatum
28 Jan – 25 Feb
8-12 wk
22 Apr
2 wk after
29 Apr
3 wk after
African marigold
Tagetes erecta
Fleece
18 Mar – 1 Apr
6-8 wk
13 May
5 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Mar
6-8 wk
7 May
4 wk after
14 May
5 wk after
Woodland sage
Salvia nemorosa
3 – 17 Feb
8-10 wk
14 Apr
1 wk after
29 Apr
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
4 Mar – 1 Apr
6-10 wk
13 May
5 wk after
California goldenpoppy
Eschscholzia californica
1 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
4 – 18 Mar
8-10 wk
13 May
5 wk after
Water forget-me-not
Myosotis scorpioides
27 Jan – 10 Feb
6-8 wk
24 Mar
2 wk before
18 Apr
1 wk after
Current date Soon Date passed