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Rel. frost
Last spring frost (0°C) 12 May Normal year · 20 years of data
Frost-free season 146 days 12 May – 5 Oct

Vegetables

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