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Rel. frost
Last spring frost (0°C) 30 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 149 days 30 Apr – 26 Sep
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)
Greenhouse
21 Mar – 4 Apr
5-7 wk
9 May
1 wk after
27 Mar
5 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
4-6 wk
20 May
3 wk after
24 Apr
1 wk before
Chili pepper
Capsicum annuum
Season too short
18 Mar – 15 Apr
8-12 wk
10 Jun
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Feb
5-7 wk
31 Mar
4 wk before
17 Apr
2 wk before
Cucumber
Cucumis sativus
Season too short
13 – 20 May
3-4 wk
10 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
Season too short
6 – 13 May
4-5 wk
10 Jun
6 wk after
13 May
2 wk after
Butter bean
Phaseolus lunatus
Season too short
13 – 20 May
3-4 wk
10 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Feb – 5 Mar
8-12 wk
30 Apr
Vid frost
13 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
2 wk after
13 May
2 wk after
Sweetcorn
Zea mays
Greenhouse
5 – 12 May
3-4 wk
2 Jun
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
Fleece
22 – 29 Apr
3-4 wk
20 May
3 wk after
29 Apr
Carrot
Daucus carota subsp. sativus var. sativus
17 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Feb
5-7 wk
31 Mar
4 wk before
17 Apr
2 wk before
Potato
Solanum tuberosum
24 Mar – 7 Apr
4-6 wk
5 May
1 wk after
5 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Feb
5-7 wk
31 Mar
4 wk before
24 Apr
1 wk before
Pumpkin
Cucurbita pepo
Season too short
13 – 20 May
3-4 wk
10 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
22 – 29 Apr
3-4 wk
20 May
3 wk after
29 Apr
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
4-6 wk
20 May
3 wk after
Lettuce
Lactuca sativa
24 – 31 Mar
3-4 wk
21 Apr
1 wk before
24 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Mar
4-6 wk
21 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Mar – 3 Apr
2-4 wk
17 Apr
2 wk before
17 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Apr
1 wk before
24 Apr
1 wk before
Spinach
Spinacia oleracea
13 – 20 Mar
3-4 wk
10 Apr
3 wk before
10 Apr
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
11 wk after
Tomato
Solanum lycopersicum
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Greenhouse
28 Apr – 12 May
2-4 wk
26 May
4 wk after
13 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
4-6 wk
20 May
3 wk after
Pea
Pisum sativum
13 – 20 Mar
3-4 wk
10 Apr
3 wk before
24 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
4 – 18 May
4-6 wk
15 Jun
7 wk after
Lemon balm
Melissa officinalis
19 Feb – 5 Mar
8-10 wk
30 Apr
Vid frost
26 May
4 wk after
Dill
Anethum graveolens
24 Apr
1 wk before
Chives
Allium schoenoprasum
3 – 17 Feb
6-8 wk
31 Mar
4 wk before
24 Apr
1 wk before
Spearmint
Mentha spicata
16 Jan – 13 Feb
8-12 wk
10 Apr
3 wk before
26 May
4 wk after
Coriander
Coriandrum sativum
13 May
2 wk after
Sage
Salvia officinalis
Fleece
11 – 25 Mar
8-10 wk
20 May
3 wk after
Thyme
Thymus vulgaris
11 – 25 Mar
8-10 wk
20 May
3 wk after
Oregano
Origanum vulgare
14 – 28 Mar
6-8 wk
9 May
1 wk after
26 May
4 wk after
Parsley
Petroselinum crispum
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
24 Apr
1 wk before
Rosemary
Salvia rosmarinus
Fleece
11 Feb – 11 Mar
10-14 wk
20 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
28 May – 4 Jun
3-4 wk
25 Jun
8 wk after
Cornflower
Centaurea cyanus
10 Apr
3 wk before
24 Apr
1 wk before
Statice
Limonium sinuatum
Greenhouse
17 – 31 Mar
8-10 wk
26 May
4 wk after
Sweet William
Dianthus barbatus
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
5 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
2 Jun
5 wk after
Dahlia
Dahlia × pinnata
Greenhouse
25 Mar – 8 Apr
6-8 wk
20 May
3 wk after
Dahlia (tubers)
Dahlia × pinnata
31 Mar – 28 Apr
4-8 wk
26 May
4 wk after
26 May
4 wk after
Foxglove
Digitalis purpurea
30 Jan – 13 Feb
8-10 wk
10 Apr
3 wk before
13 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
18 Mar – 15 Apr
8-12 wk
10 Jun
6 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 May
4-6 wk
25 Jun
8 wk after
Chinese lantern
Physalis alkekengi
Fleece
11 – 25 Mar
8-10 wk
20 May
3 wk after
Love in a mist
Nigella damascena
24 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
2 Jun
5 wk after
Tall verbena
Verbena bonariensis
Fleece
25 Feb – 25 Mar
8-12 wk
20 May
3 wk after
Cardoon
Cynara cardunculus
Season too short
3 – 31 Mar
8-12 wk
26 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
18 Mar – 15 Apr
8-12 wk
10 Jun
6 wk after
Globe amaranth
Gomphrena globosa
Season too short
15 – 29 Apr
6-8 wk
10 Jun
6 wk after
Corn poppy
Papaver rhoeas
24 Apr
1 wk before
Snapdragon
Antirrhinum majus
27 Jan – 24 Feb
8-12 wk
21 Apr
1 wk before
5 May
1 wk after
Flossflower
Ageratum houstonianum
Season too short
1 – 15 Apr
8-10 wk
10 Jun
6 wk after
Sweet pea
Lathyrus odoratus
13 Feb – 6 Mar
5-8 wk
10 Apr
3 wk before
Stock
Matthiola incana
24 Feb – 10 Mar
6-8 wk
21 Apr
1 wk before
13 May
2 wk after
Wormwood
Artemisia absinthium
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
6 wk after
Pansy
Viola × wittrockiana
20 Jan – 3 Feb
8-10 wk
31 Mar
4 wk before
5 May
1 wk after
Petunia
Petunia
Greenhouse
3 – 31 Mar
8-12 wk
26 May
4 wk after
Scabious
Scabiosa atropurpurea
Fleece
25 Mar – 8 Apr
6-8 wk
20 May
3 wk after
26 May
4 wk after
Zinnia
Zinnia elegans
Greenhouse
14 – 28 Apr
4-6 wk
26 May
4 wk after
Common morning glory
Ipomoea purpurea
Season too short
6 – 20 May
3-5 wk
10 Jun
6 wk after
Cosmos
Cosmos bipinnatus
Greenhouse
14 – 28 Apr
4-6 wk
26 May
4 wk after
13 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
2 – 30 Apr
8-12 wk
25 Jun
8 wk after
Bee balm
Monarda didyma
5 Feb – 5 Mar
8-12 wk
30 Apr
Vid frost
26 May
4 wk after
Yarrow
Achillea millefolium
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Safflower
Carthamus tinctorius
10 Apr
3 wk before
24 Apr
1 wk before
Iceland poppy
Papaver nudicaule
3 – 17 Feb
6-8 wk
31 Mar
4 wk before
17 Apr
2 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
4-6 wk
15 May
2 wk after
13 May
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
18 Mar – 1 Apr
10-12 wk
10 Jun
6 wk after
Sunflower
Helianthus annuus
Greenhouse
28 Apr – 5 May
3-4 wk
26 May
4 wk after
29 Apr
China aster
Callistephus chinensis
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
13 May
2 wk after
Annual phlox
Phlox drummondii
Fleece
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
26 May
4 wk after
Hollyhock
Alcea rosea
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Delphinium
Delphinium elatum
25 Feb – 25 Mar
8-12 wk
20 May
3 wk after
26 May
4 wk after
African marigold
Tagetes erecta
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
Black-eyed Susan
Rudbeckia hirta
Fleece
25 Mar – 8 Apr
6-8 wk
20 May
3 wk after
26 May
4 wk after
Woodland sage
Salvia nemorosa
28 Feb – 14 Mar
8-10 wk
9 May
1 wk after
26 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
1 – 29 Apr
6-10 wk
10 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
24 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
Greenhouse
17 – 31 Mar
8-10 wk
26 May
4 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Feb
6-8 wk
10 Apr
3 wk before
13 May
2 wk after
Current date Soon Date passed