Native Sunflowers of Ontario
- Woodland Sunflower (Helianthus divaricatus)
- Giant Sunflower (Helianthus giganteus)
- Pale-leaved Sunflower (Helianthus strumosus)
- Sunchoke (Helianthus tuberosus)
- False Sunflower (Heliopsis helianthoides)
- Compass Plant (Silphium laciniatum)
- Cup Plant (Silphium perfoliatum)
Are sunflowers indigenous to Canada?
Some Indigenous groups grew a species of sunflower in North America, later brought to Europe by Spanish explorers. It evolved into an important crop (H. annuus var. macrocarpa) in Russia in the 18th century and was introduced to Canada in 1875.
Is Oxeye sunflower native to Ontario?
It is native to Ontario, New England and much of the mid-west. It is a fairly tough plant that blooms for most of the summer, producing a good cover of large yellow flowers.
Are there native sunflowers?
The sunflower is native to North America and was first grown as a crop by indigenous tribes over 4,500 years ago. Native Americans cultivated the sunflower from its original bushy, multi-headed type to produce a single-stemmed plant bearing a large flower.
What flowers are native to Ontario?
5 Ontario wildflowers to spot this spring
- Bloodroot. Though quite low to the ground, these early upturned flowers are sure to catch your eye on the edge of many Ontario trails.
- Hepatica.
- Marsh Marigold.
- Trillium.
- Trout lily.
Is the Woodland sunflower native to Ontario?
It is native to central and eastern North America, from Ontario and Quebec in the north, south to Florida and Louisiana and west to Oklahoma and Iowa.
Are sunflowers invasive or native?
No, in North America the sunflower is not considered an invasive species because they are a native plant. Outside of North America, the large flowering plant may be classified as an invasive species if, as a non-native species, they are harmful to the local ecosystem.
Is Brown Eyed Susan native to Ontario?
Flowers from mid-June to September. Habitat: Black-eyed Susan is a native plant in the Great Plains but was introduced into Ontario and has spread aggressively throughout the province in meadows, pastures, edges of woods, river valleys, lakeshores and roadsides, usually in coarse-textured soils.
What is the rarest sunflower?
Schweinitz’s Sunflower
Schweinitz’s Sunflower
This sunflower is one of the rarest species in America and is named after Lewis David von Schweintz a botanist who discovered the species in the early 1800s.
Is purple cone flower native to Ontario?
While this plant is designated by VASCAN as introduced to Ontario, it is considered a near native plant to many plant professionals in the nursery industry in Southern Ontario. The native range is the north-eastern United States, which is right on the border of Southern Ontario.
What does a wild sunflower look like?
Wild sunflowers are coarse, hairy, leafy, fast-growing annual plants that typically grow to a height of 1 to 1.5 metres high and have stiff upright stalks. The species is considered a weedy plant because it is commonly seen growing along roads, fences, fields and in waste areas.
Can you eat wild sunflowers?
However, sunflowers can do more than just add aesthetic appeal; in fact, they are an entirely edible plant. From root to leaf, sprout to stalk, you can use your sunflowers to make everything from salads to sunflower tea.
Which sunflowers come back every year?
The three most likely perennial sunflower botanical names are Helianthus angustifolius, H. debilis, and H. maximiliani. There are other perennial species, too, but these are less widely available.
What is the rarest flower in Ontario?
Lakeside daisy
This bright yellow flower that blooms in early spring is globally rare and found only along the Great Lakes. In Canada, it occurs only on the grasslands and pavement alvars of the Saugeen Bruce Peninsula and Manitoulin Island in Ontario.
What is the most invasive plant Ontario?
‘Canada’s most invasive plant,’ phragmites, has largely been spread by human activity. Phragmites is a tall, robust invasive grass in our area and it can destroy natural habitats by eliminating vegetation in wetlands, shores, beaches and other natural places.
Are marigolds native to Ontario?
Marsh marigolds (Caltha palustris) are a cheerful sign of spring in Wilket Creek ravine. They are native to southern Ontario and are part of the buttercup family, evident by their vibrant yellow flowers.
Are woodland sunflowers invasive?
Woodland sunflower (Helianthus divaricatus, strumosus, etc.) is a highly invasive native species which is in full bloom at present.
What is the sunflower capital of Canada?
Altona
Altona is the Sunflower Capital of Canada, twinned with Emerald, Australia. The Manitoba Sunflower Festival is celebrated the last weekend in July.
Is Lavender indigenous to Ontario?
Growing lavender successfully can be a challenge, in Ontario, if you don’t understand the nature of the plant. Understanding that lavender is not a native plant to Canada, it is native to the Mediterranean, is important. It reminds you that you will have to make it comfortable in this country.
What should not be planted by sunflowers?
There are a few common garden crops that make poor companion plants for sunflowers. This includes potatoes, hyssop, and both herb fennel and Florence fennel.
Do sunflowers poison the soil?
However, the beautiful bright blooms do hide a nasty secret: sunflowers are allelopathic, that is, they give off toxins (terpenes and various phenolic compounds) from all their parts (roots, leaves, stems, flowers, seeds, etc.) that impede the growth of other plants or even kill them.