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"Deadheading", or removing dead heads, would serve no purpose on the common sunflower. They are annual plants, and thus will die at the end of the year, and will not grow any new heads later on. Removing the flower head on a still growing plant may make it taller and live longer, but would also destroy the aesthetic aspects of growing one in the first place.

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14y ago
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14y ago

Deadheading won't make more flowers grow and you will be taking away the seed that many birds enjoy. We get yellow finches hanging upside down on our sunflowers, eating the seeds. We also get hummingbirds around them, so I think they are best left. We take a few heads off in the autumn, to collect the seeds for the following year, and leave the rest for bird food.

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12y ago

Though cultivated sunflowers should not be deadheaded and as it will not force them to rebloom and the seeds will be useless. If you are growing a wild variety and see new buds forming and would like those to reach their full potential snip about an inch or so down from the spent bloom with garden shears. The seeds from the spent flower will not be useful unless left to mature on the stalk. The back of the flower should be yellowish-brown when the seeds are ready.

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11y ago

it is good to deadhead flowers because the whole goal of a flower is to reproduce the plant. When dead-heading, you are stopping that process, forcing the plant to try and flower again. This gives you longer blooming periods to enjoy your flowers.

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9y ago

You should deadhead daylilies because it helps the next day's blossoms open better. Gardeners that exhibit daylilies do. However you need not bother with Stella d'oro daylilies.

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8y ago

Yes you should deadhead a dahlia.

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14y ago

leave the heads on for bird food.

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Anonymous

Lvl 1
3y ago

Yes

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Q: Should you cut sunflowers back when they die?
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Related questions

Will sunflowers come back next year?

Domestic sunflowers are annuals. The plant will die off completely at the end of each year. If the seeds are left on the head to fall off and scatter, it is possible that new sunflowers will grow there the following year. Some species of wild sunflowers, as well as Jerusalem artichokes, have a tap root that will allow the plant to grow back the following year.


Can day lilies be cut back in the summer or fall?

Cut off the old flowers the foliage will die back naturally in the Autumn.


If you cut a tick in half will it die?

If you cut a tick it should die, unless the tick has stem cells in its body which reproduce new parts of the body if it is cut off, for instance if you cut of the head of a tick and it has stem cells in its body it will b able to grow that head back over time, while its head or other part of the body is growing back the body can function the same way it did before


Can sunflowers grow in no light?

No. They can germinate, but will soon die if there is no light.


How do you control die-back?

Die-back is usually caused by a fungus so cut the diseased stem back to a healthy bud and spray with a fungicide.


Can sun flowers grow in the winter?

Common sunflowers are annuals, and will die in the autumn before winter.


How do sunflowers pollinate?

Sunflowers reproduce by large seeds that form in the center of their flowerhead.


Should you deadhead daisies after they bloom?

You should deadhead your peonies back after the bloom has gone by. Deadhead back to the leaf of that stem. Let the green stems and leaves die back naturally. We cut ours back to the ground in the fall.


Will a hamster die from a cut?

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Do bees help polinate sunflowers?

Yes. Although if the sunflowers are grown using systemic insecticides, such as Bayer's Clothianidin, the bees will almost certainly die from neonicotinoid poisoning.


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Do Christmas trees grow roots once cut?

Well... If you cut your head off you are going to die. Your head wont grow back.