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Rel. frost
Last spring frost (0°C) 16 Apr Normal year · 20 years of data
Frost-free season 201 days 16 Apr – 3 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)
30 Mar – 13 Apr
21 Jun
5-7 wk
18 May
26 Jul
5 wk after
10 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
3 Jul
4-6 wk
6 May
31 Jul
3 wk after
10 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
30 Mar – 27 Apr
17 Apr
8-12 wk
22 Jun
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Jan – 10 Feb
16 Jun
5-7 wk
17 Mar
21 Jul
4 wk before
3 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
25 May – 1 Jun
23 Jun
3-4 wk
22 Jun
14 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
13 Jun
4-5 wk
22 Jun
11 Jul
10 wk after
27 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
2 – 9 Jun
6 Jun
3-4 wk
30 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Jan – 19 Feb
6 Apr
8-12 wk
16 Apr
1 Jun
Vid frost
29 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 Apr
21 Jun
1 wk before
10 Apr
11 Jun
1 wk before
Maize
Zea mays
14 – 21 May
13 Jun
3-4 wk
11 Jun
4 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
10 Jul
3-4 wk
18 May
31 Jul
5 wk after
29 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Jan – 10 Feb
16 Jun
5-7 wk
17 Mar
21 Jul
4 wk before
3 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
10 – 24 Mar
13 Jun
4-6 wk
21 Apr
11 Jul
1 wk after
21 Apr
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Jan – 10 Feb
26 Jun
5-7 wk
17 Mar
31 Jul
4 wk before
10 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
25 May – 1 Jun
11 Jul
3-4 wk
22 Jun
1 Aug
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
30 Jun
3-4 wk
18 May
21 Jul
5 wk after
29 Apr
11 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
28 Jun
4-6 wk
6 May
26 Jul
3 wk after
Lettuce
Lactuca sativa
10 – 17 Mar
15 Jul
3-4 wk
7 Apr
5 Aug
1 wk before
10 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Feb – 10 Mar
28 Jun
4-6 wk
7 Apr
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Mar
7 Jun
2-4 wk
3 Apr
21 Jun
2 wk before
3 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 Apr
21 Jun
1 wk before
10 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
27 Feb – 6 Mar
30 Jul
3-4 wk
27 Mar
20 Aug
3 wk before
27 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
18 May – 1 Jun
4-6 wk
29 Jun
11 wk after
Garden tomato
Solanum lycopersicum
16 – 30 Apr
23 May
6-8 wk
11 Jun
4 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 May
13 Jul
2-4 wk
11 Jun
27 Jul
8 wk after
27 May
17 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
28 Jun
4-6 wk
6 May
26 Jul
3 wk after
Garden pea
Pisum sativum
27 Feb – 6 Mar
30 Jun
3-4 wk
27 Mar
21 Jul
3 wk before
10 Apr
11 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
11 – 25 May
19 Jun
4-6 wk
22 Jun
17 Jul
10 wk after
Lemon balm
Melissa officinalis
5 – 19 Feb
26 May
8-10 wk
16 Apr
21 Jul
Vid frost
12 May
11 Jul
4 wk after
Dill
Anethum graveolens
10 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
20 Jan – 3 Feb
9 Jun
6-8 wk
17 Mar
21 Jul
4 wk before
10 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
2 – 30 Jan
26 May
8-12 wk
27 Mar
21 Jul
3 wk before
12 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
29 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
11 May
8-10 wk
18 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
16 May
8-10 wk
6 May
11 Jul
3 wk after
Oregano
Origanum vulgare
28 Feb – 14 Mar
30 May
6-8 wk
25 Apr
11 Jul
1 wk after
12 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
30 Jan – 13 Feb
30 May
6-8 wk
27 Mar
11 Jul
3 wk before
10 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
12 Apr
10-14 wk
18 May
21 Jun
5 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
25 May – 1 Jun
26 Jun
3-4 wk
22 Jun
17 Jul
10 wk after
Cornflower
Centaurea cyanus
27 Mar
21 Jul
3 wk before
10 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
2 – 16 Apr
16 May
8-10 wk
11 Jun
11 Jul
8 wk after
Sweet William
Dianthus barbatus
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
21 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
16 – 30 Apr
30 May
6-8 wk
11 Jun
11 Jul
8 wk after
29 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Apr
30 May
6-8 wk
4 Jun
11 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Mar – 14 Apr
13 Jun
4-8 wk
12 May
11 Jul
4 wk after
12 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
16 – 30 Jan
8-10 wk
27 Mar
3 wk before
29 Apr
2 wk after
Busy lizzie
Impatiens walleriana
30 Mar – 27 Apr
11 Jul
8-12 wk
22 Jun
5 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
9 Jun
6-8 wk
11 Jun
21 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
11 – 25 May
20 May
4-6 wk
22 Jun
10 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
26 Apr
8-10 wk
18 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
10 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
16 – 30 Apr
20 May
6-8 wk
11 Jun
1 Jul
8 wk after
29 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
26 Apr
8-12 wk
18 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
19 Mar – 16 Apr
27 Mar
8-12 wk
11 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
30 Mar – 27 Apr
12 May
8-12 wk
22 Jun
7 Jul
10 wk after
Globe amaranth
Gomphrena globosa
27 Apr – 11 May
26 May
6-8 wk
22 Jun
7 Jul
10 wk after
Corn poppy
Papaver rhoeas
10 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
13 Jan – 10 Feb
16 May
8-12 wk
7 Apr
11 Jul
1 wk before
21 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 Apr
26 May
8-10 wk
22 Jun
21 Jul
10 wk after
Sweet pea
Lathyrus odoratus
30 Jan – 20 Feb
6 Jun
5-8 wk
27 Mar
11 Jul
3 wk before
Stock
Matthiola incana
10 – 24 Feb
9 Jun
6-8 wk
7 Apr
21 Jul
1 wk before
29 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
30 Jan – 13 Feb
10 May
6-8 wk
27 Mar
21 Jun
3 wk before
29 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
11 – 25 May
4 Jun
4-6 wk
22 Jun
2 Jul
10 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Jan
26 May
8-10 wk
17 Mar
21 Jul
4 wk before
21 Apr
11 Jul
1 wk after
Petunia
Petunia
19 Mar – 16 Apr
16 May
8-12 wk
11 Jun
11 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
10 May
6-8 wk
18 May
21 Jun
5 wk after
27 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
30 Apr – 14 May
23 Jun
4-6 wk
11 Jun
21 Jul
8 wk after
Common morning glory
Ipomoea purpurea
18 May – 1 Jun
26 Jun
3-5 wk
22 Jun
17 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
30 Apr – 14 May
13 Jun
4-6 wk
11 Jun
11 Jul
8 wk after
27 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
6 Apr – 4 May
11 Jun
8-12 wk
29 Jun
6 Aug
11 wk after
Bee balm
Monarda didyma
22 Jan – 19 Feb
26 Apr
8-12 wk
16 Apr
21 Jun
Vid frost
12 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
30 Jan – 13 Feb
10 Apr
6-8 wk
27 Mar
22 May
3 wk before
29 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
27 Mar
21 Jun
3 wk before
10 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
20 Jan – 3 Feb
30 May
6-8 wk
17 Mar
11 Jul
4 wk before
3 Apr
1 Jul
2 wk before
Bishop's flower
Ammi majus
20 Mar – 3 Apr
13 Jun
4-6 wk
1 May
11 Jul
2 wk after
29 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
30 Mar – 13 Apr
12 Apr
10-12 wk
22 Jun
10 wk after
Sunflower
Helianthus annuus
14 – 21 May
20 Jun
3-4 wk
11 Jun
11 Jul
8 wk after
12 May
1 Jul
4 wk after
China aster
Callistephus chinensis
16 – 30 Apr
9 Jun
6-8 wk
11 Jun
21 Jul
8 wk after
27 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
1 – 15 Apr
9 Jun
6-8 wk
27 May
21 Jul
6 wk after
27 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
30 Jan – 13 Feb
6-8 wk
27 Mar
3 wk before
29 Apr
2 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
26 Apr
8-12 wk
6 May
21 Jun
3 wk after
12 May
11 Jun
4 wk after
African marigold
Tagetes erecta
16 – 30 Apr
9 Jun
6-8 wk
11 Jun
21 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
30 May
6-8 wk
18 May
11 Jul
5 wk after
27 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Feb
16 Apr
8-10 wk
25 Apr
11 Jun
1 wk after
12 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
13 Apr – 11 May
5 Jun
6-10 wk
22 Jun
17 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
10 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 Apr
16 May
8-10 wk
11 Jun
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
30 Jan – 13 Feb
10 May
6-8 wk
27 Mar
21 Jun
3 wk before
29 Apr
11 Jun
2 wk after