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Rel. frost
Last spring frost (0°C) 28 Mar Normal year · 20 years of data
Frost-free season 242 days 28 Mar – 25 Nov

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
Season too short
7 – 21 Feb
13 Jun
5-7 wk
28 Mar
18 Jul
0 wk
19 Mar
8 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
14 – 28 Feb
25 Jun
4-6 wk
28 Mar
23 Jul
0 wk
19 Mar
13 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
10 Feb – 10 Mar
12 Apr
8-12 wk
5 May
7 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
7 – 21 Feb
8 Jun
5-7 wk
28 Mar
13 Jul
0 wk
12 Mar
3 Jul
2 wk before
Garden cucumber
Cucumis sativus
19 – 26 Apr
6 Jun
3-4 wk
17 May
27 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 Apr
5 Jun
4-5 wk
17 May
3 Jul
7 wk after
10 May
23 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
29 Apr – 6 May
2 Jun
3-4 wk
27 May
23 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
3 – 31 Jan
29 Mar
8-12 wk
28 Mar
24 May
0 wk
28 Mar
14 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
19 Mar
13 Jun
1 wk before
19 Mar
3 Jun
1 wk before
Maize
Zea mays
7 – 14 Apr
27 May
3-4 wk
5 May
17 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 Mar
2 Jul
3-4 wk
30 Mar
23 Jul
0 wk
10 Apr
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Mar
3 Jul
0 wk
28 Mar
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
7 – 21 Feb
8 Jun
5-7 wk
28 Mar
13 Jul
0 wk
12 Mar
3 Jul
2 wk before
Potato
Solanum tuberosum
Season too short
11 – 25 Feb
5 Jun
4-6 wk
25 Mar
3 Jul
0 wk
25 Mar
23 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
Season too short
7 – 21 Feb
18 Jun
5-7 wk
28 Mar
23 Jul
0 wk
19 Mar
13 Jul
1 wk before
Pumpkin
Cucurbita pepo
19 – 26 Apr
7 Jul
3-4 wk
17 May
28 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
28 Feb – 7 Mar
2 Jul
3-4 wk
28 Mar
23 Jul
0 wk
28 Mar
13 Jul
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
14 – 28 Feb
20 Jun
4-6 wk
28 Mar
18 Jul
0 wk
Lettuce
Lactuca sativa
Season too short
28 Feb – 7 Mar
7 Jul
3-4 wk
28 Mar
28 Jul
0 wk
19 Mar
18 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
14 – 28 Feb
20 Jun
4-6 wk
28 Mar
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
12 – 26 Feb
30 May
2-4 wk
12 Mar
13 Jun
2 wk before
12 Mar
3 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
19 Mar
13 Jun
1 wk before
19 Mar
3 Jun
1 wk before
Spinach
Spinacia oleracea
Season too short
28 Feb – 7 Mar
22 Jul
3-4 wk
28 Mar
12 Aug
0 wk
27 Jan
2 Aug
9 wk before
Sweet potato
Ipomoea batatas
22 Apr – 6 May
4-6 wk
3 Jun
10 wk after
Garden tomato
Solanum lycopersicum
10 – 24 Mar
6 May
6-8 wk
5 May
17 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
7 – 21 Apr
9 Jul
2-4 wk
5 May
23 Jul
5 wk after
10 May
13 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
14 – 28 Feb
20 Jun
4-6 wk
28 Mar
18 Jul
0 wk
Garden pea
Pisum sativum
Season too short
28 Feb – 7 Mar
22 Jun
3-4 wk
28 Mar
13 Jul
0 wk
19 Mar
3 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
5 – 19 Apr
15 Jun
4-6 wk
17 May
13 Jul
7 wk after
Lemon balm
Melissa officinalis
Season too short
17 – 31 Jan
18 May
8-10 wk
28 Mar
13 Jul
0 wk
3 Apr
3 Jul
1 wk after
Dill
Anethum graveolens
29 Mar
23 Jul
0 wk
Wild chives
Allium schoenoprasum
Season too short
31 Jan – 14 Feb
1 Jun
6-8 wk
28 Mar
13 Jul
0 wk
19 Mar
3 Jul
1 wk before
Spearmint
Mentha spicata
Season too short
3 – 31 Jan
18 May
8-12 wk
28 Mar
13 Jul
0 wk
3 Apr
3 Jul
1 wk after
Coriander
Coriandrum sativum
28 Mar
12 Aug
0 wk
10 Apr
2 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
17 – 31 Jan
3 May
8-10 wk
28 Mar
28 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
17 – 31 Jan
8 May
8-10 wk
28 Mar
3 Jul
0 wk
Oregano
Origanum vulgare
Season too short
31 Jan – 14 Feb
22 May
6-8 wk
28 Mar
3 Jul
0 wk
3 Apr
23 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
31 Jan – 14 Feb
22 May
6-8 wk
28 Mar
3 Jul
0 wk
19 Mar
23 Jun
1 wk before
Rosemary
Salvia rosmarinus
22 Dec – 19 Jan
4 Apr
10-14 wk
30 Mar
13 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
19 – 26 Apr
22 Jun
3-4 wk
17 May
13 Jul
7 wk after
Cornflower
Centaurea cyanus
Season too short
28 Mar
13 Jul
0 wk
19 Mar
3 Jul
1 wk before
Statice
Limonium sinuatum
24 Feb – 10 Mar
8 May
8-10 wk
5 May
3 Jul
5 wk after
Sweet William
Dianthus barbatus
31 Jan – 14 Feb
6-8 wk
28 Mar
0 wk
7 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
10 – 24 Mar
22 May
6-8 wk
5 May
3 Jul
5 wk after
3 Jun
23 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Mar
22 May
6-8 wk
28 Apr
3 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
6 Feb – 6 Mar
5 Jun
4-8 wk
3 Apr
3 Jul
1 wk after
3 Apr
23 Jun
1 wk after
Foxglove
Digitalis purpurea
17 – 31 Jan
8-10 wk
28 Mar
0 wk
10 Apr
2 wk after
Busy lizzie
Impatiens walleriana
22 Feb – 22 Mar
3 Jul
8-12 wk
17 May
28 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Mar
1 Jun
6-8 wk
5 May
13 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
5 – 19 Apr
16 May
4-6 wk
17 May
13 Jun
7 wk after
Chinese lantern
Physalis alkekengi
19 Jan – 2 Feb
18 Apr
8-10 wk
30 Mar
13 Jun
0 wk
Love in a mist
Nigella damascena
28 Mar
28 Jun
0 wk
29 Mar
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
10 – 24 Mar
12 May
6-8 wk
5 May
23 Jun
5 wk after
3 Jun
13 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
5 Jan – 2 Feb
18 Apr
8-12 wk
30 Mar
13 Jun
0 wk
Cardoon
Cynara cardunculus
10 Feb – 10 Mar
19 Mar
8-12 wk
5 May
14 May
5 wk after
Regal-foxtail
Ptilotus nobilis
22 Feb – 22 Mar
8 May
8-12 wk
17 May
3 Jul
7 wk after
Globe amaranth
Gomphrena globosa
22 Mar – 5 Apr
22 May
6-8 wk
17 May
3 Jul
7 wk after
Corn poppy
Papaver rhoeas
28 Mar
13 Jul
0 wk
29 Mar
3 Jul
0 wk
Snapdragon
Antirrhinum majus
Season too short
3 – 31 Jan
8 May
8-12 wk
28 Mar
3 Jul
0 wk
25 Mar
23 Jun
0 wk
Flossflower
Ageratum houstonianum
8 – 22 Mar
18 May
8-10 wk
17 May
13 Jul
7 wk after
Sweet pea
Lathyrus odoratus
Season too short
31 Jan – 21 Feb
29 May
5-8 wk
28 Mar
3 Jul
0 wk
Stock
Matthiola incana
Season too short
31 Jan – 14 Feb
1 Jun
6-8 wk
28 Mar
13 Jul
0 wk
28 Mar
3 Jul
0 wk
Wormwood
Artemisia absinthium
Season too short
31 Jan – 14 Feb
2 May
6-8 wk
28 Mar
13 Jun
0 wk
28 Mar
3 Jun
0 wk
Mexican sunflower
Tithonia rotundifolia
5 – 19 Apr
31 May
4-6 wk
17 May
28 Jun
7 wk after
Garden pansy
Viola × wittrockiana
Season too short
17 – 31 Jan
18 May
8-10 wk
28 Mar
13 Jul
0 wk
25 Mar
3 Jul
0 wk
Petunia
Petunia
10 Feb – 10 Mar
8 May
8-12 wk
5 May
3 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Feb
2 May
6-8 wk
30 Mar
13 Jun
0 wk
10 May
3 Jun
6 wk after
Common zinnia
Zinnia elegans
24 Mar – 7 Apr
15 Jun
4-6 wk
5 May
13 Jul
5 wk after
Common morning glory
Ipomoea purpurea
12 – 26 Apr
22 Jun
3-5 wk
17 May
13 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
24 Mar – 7 Apr
5 Jun
4-6 wk
5 May
3 Jul
5 wk after
10 May
23 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
14 Mar – 11 Apr
7 Jun
8-12 wk
6 Jun
2 Aug
10 wk after
Bee balm
Monarda didyma
Season too short
3 – 31 Jan
18 Apr
8-12 wk
28 Mar
13 Jun
0 wk
3 Apr
3 Jun
1 wk after
Yarrow
Achillea millefolium
Season too short
31 Jan – 14 Feb
2 Apr
6-8 wk
28 Mar
14 May
0 wk
28 Mar
4 May
0 wk
Safflower
Carthamus tinctorius
Season too short
28 Mar
13 Jun
0 wk
19 Mar
3 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
31 Jan – 14 Feb
22 May
6-8 wk
28 Mar
3 Jul
0 wk
12 Mar
23 Jun
2 wk before
Bishop's flower
Ammi majus
Season too short
14 – 28 Feb
5 Jun
4-6 wk
28 Mar
3 Jul
0 wk
28 Mar
23 Jun
0 wk
Drumsticks
Pycnosorus globosus
22 Feb – 8 Mar
4 Apr
10-12 wk
17 May
13 Jun
7 wk after
Sunflower
Helianthus annuus
7 – 14 Apr
12 Jun
3-4 wk
5 May
3 Jul
5 wk after
22 Apr
23 Jun
4 wk after
China aster
Callistephus chinensis
10 – 24 Mar
1 Jun
6-8 wk
5 May
13 Jul
5 wk after
10 May
3 Jul
6 wk after
Annual phlox
Phlox drummondii
24 Feb – 10 Mar
1 Jun
6-8 wk
21 Apr
13 Jul
3 wk after
10 May
3 Jul
6 wk after
Hollyhock
Alcea rosea
31 Jan – 14 Feb
6-8 wk
28 Mar
0 wk
10 Apr
2 wk after
Alpine delphinium
Delphinium elatum
Season too short
3 – 31 Jan
18 Apr
8-12 wk
28 Mar
13 Jun
0 wk
3 Apr
3 Jun
1 wk after
African marigold
Tagetes erecta
10 – 24 Mar
1 Jun
6-8 wk
5 May
13 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Feb
22 May
6-8 wk
30 Mar
3 Jul
0 wk
10 May
23 Jun
6 wk after
Wood sage
Salvia nemorosa
Season too short
17 – 31 Jan
8 Apr
8-10 wk
28 Mar
3 Jun
0 wk
3 Apr
24 May
1 wk after
Black-eyed susan vine
Thunbergia alata
8 Mar – 5 Apr
1 Jun
6-10 wk
17 May
13 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
28 Mar
13 Jul
0 wk
29 Mar
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
24 Feb – 10 Mar
8 May
8-10 wk
5 May
3 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
31 Jan – 14 Feb
2 May
6-8 wk
28 Mar
13 Jun
0 wk
28 Mar
3 Jun
0 wk