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Rel. frost
Last spring frost (0°C) 26 Apr Normal year · 20 years of data
Frost-free season 191 days 26 Apr – 3 Nov

Vegetables

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