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Rel. frost
Last spring frost (0°C) 29 Apr Normal year · 20 years of data
Frost-free season 173 days 29 Apr – 19 Oct

Vegetables

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