Is sunflower an economic plant?
Sunflowers for seed production is a $14 billion dollar a year business.
Does salt water effect the sunflowers plant growth?
If you mean salt water as in an experiment, you have to remember that salt will dehydrate the plant by the process of osmosis. A formerly healthy plant, when given the salt water, will begin to wilt, have yellowing of the leaves and any further growth will be stunted.
If you mean growing sunflowers at a beach property, I can tell it to you straight. It can't be done unless you really, really protect the plant (greenhouse environment with filtered water and soil brought in from elsewhere). Like most annuals, sunflowers do not tolerate salt spray.
I'm a landscaper who grows sunflowers for clientel and happen to know a lot about them. sunflowers are originally thought to have come from either russia or north America. the mammoth sunflowers grow fast and become tall not because they want to be noticed but because they need to have height in order to collect sun. Furthermore as the sunflowers grow the bottom leaves naturally begin to die off as new ones emerge from the stalk. Also sunflowers prefer to be fed, while it is not necessary, they seem to flourish better in areas with a well propagated ground. given these factors a lot of scientists and biologists believe that sunflowers get they're height because they are used to growing in crowded spaces among other plants. the sunflower itself does not seem to have a long evolutionary history because they have little to no protection against wild animals (except for a thick nasty tasting stalk and plenty of height) and the only protection they have against insects is tiny hairs that grow along the stalk. most of my clients would complain of diseases on the stalk, leaves, and seed. This suggests that they're immune system is fairly weak.
Most sunflowers are annuals not because they're seeds can't last the winter, but because animals such as birds and mammals constantly eat them. the smaller dwarf sunflowers usually have more volunteers than my mammoths but that could be the small seeds being hard to find by birds, people, and wild animals.
another bi-product of the sunflower is sunflower seed oil. this was discovered by people when they would cut the stalks down and shave the leafs off. today it has many uses but because it drips slowly and they're is very little per plant it can't be bought easily as a wholesale item. the seeds themselves get coated in sunflower seed oil which is why they often turn a dark shady brownish color after sprouting stripes.
What causes sunflowers to bend toward the sunlight?
Mature sunflowers do not track the Sun.
Immature sunflower buds exhibit heliotopism. The heliotropic motion of the bud is performed by the pulvinus, a flexible segment just below the bud, due to reversible changes in turgor pressure (no growth).
Many plants are known for their ability to track the movements of the sun by a process called solar tracking or heliotropism. This is sometimes controlled by water movement in and out of cells and plant hormones.
However, cultivated sunflowers will track the sun only when young or in bud. Once mature, the flowers tend to face east. Wild sunflowers do not track the sun.
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As to why they face east, no one knows at this time. It is thought it may be to protect young developing seeds from the hot rays of the afternoon sun.
Leaves of many plants track the sun to collect the most light energy for photosynthesis, but photosynthesis has nothing to do with the leaf movements.
How long do sunflowers take to grow?
In a warm temperate climate the giant - type sunflowers take about three months from seed to flower. The miniature varieties are a bit less.
What is the growth rate of sunflowers?
My Little Giant seeds have all been volunteers for the past have dozen years. They sprout in late April or early May, and reach their full height by early August. They continue to mature until the end of August and into September, but their full height is achieved within 90 days.
They average about 10 feet, though the head bends the stalk down. If they were straight, and the root ball was included, you would have about 12 feet altogether, or 1.6 inches per day. I should try measuring them this year, in the morning and in the evening--12 hours apart, to see what part of the day the biggest spurt occurs.
How long does it take for sunflowers to birth young?
it takes up to a week for a the seed to germinate, then it can take up to a month for it to turn into an actual plant, then a few weeks from then for the sunflower head to start growing. so all up it takes a few months for the sunflower to actually grow and you won't get any seeds from it until it is fully grown. :)
When is the time to harvest sunflower seeds?
When to cut and harvest the seeds from a sunflower is a matter of choice.
You can do one of the following:
Yes! Sunflower seeds provide significant amounts of magnesium, selenium, and vitamin E! Vitamin E can also help prevent cardiovascular diseases and diabetic problems. Like all things, however, eating too much can be bad. Sunflower seeds tend to be really salty, especially processed ones. But, eating the right amount can help you stay healthy and fill your hunger. Hope this helps! :)
Can heat separate sunflower seeds and sand?
What kind of environment do sunflowers live in?
The habitat of a sunflower is prairies and dry, open areas. The optimum temperature range is 70 to 78 degrees Fahrenheit, but sunflowers can tolerate high and low temperatures. They grow best in sunny, moist, or disturbed areas.
Sunflowers like dry, arid, and sunny habitats. You should still water them, but not as much as other flowers.
How can you prevent birds and squirrels from eating your sunflowers?
You plant enough of them that the birds can have their fill and you can still harvest some. You can place fine mesh netting around the ripening flower heads to prevent the birds from eating them all.
What do you do with your sunflower once it has died?
After the flower has finished, you can either cut it and hope more flowers will come on the same plant, or you can wait and harvest the seeds that will be ready in about one month.
To harvest, do one of the following:
What state is known for sunflower and wheat?
Kansas ... it's the state flower. Sunflowers grow all over the U.S. and world, but Kansas is "the Sunflower state."
Can you get sick from expired sunflower seeds?
Of course-they just taste stale and usually a bit like the plastic bag they came in.
What part of sunflower can you eat?
No part of the sunflower plant is poisonous, so some people eat everything from leaves to petals to the pith of the stalk. Commercially, the only parts usually consumed are the hulled seeds and the tubers from Jerusalem artichokes.
What temperature does a sunflower seed grow in?
sunflower seeds the writ temperature to grow it in is 19 to 25 Celsius because it isn't to hot or too cold.
Do squirrels eat raw sunflower seeds?
Yes! Squirrels love sunflower seeds. You can attract squirrels with the seeds, but if the seeds are for the birds, good luck to you trying to keep the squirrels out! They are clever creatures, and do impressive acrobatics just to get at the seed!