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Rel. frost
Last spring frost (0°C) 27 Apr Normal year · 20 years of data
Frost-free season 189 days 27 Apr – 2 Nov

Vegetables

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