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Asked by
Anonymous on
October 18, 2011

Q. Cannas Looking Ugly

I have some cannas in my front yard. I’m thinking of cutting them all the way to the ground because they look bad, pests ruined them. I am hoping next year they come back. Would it be ok to spray the cannas once a week to keep bugs away with pesticide?

Answered by
Nikki on
October 19, 2011
Certified Expert
A.

You can cut down the flower stem as far as you like, but make sure to leave the foliage as the plant needs this to store energy for next year's flower. You can spray the plants with neem oil, per directions, for pests.

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Asked by
pielady60 on
March 12, 2012
Answered by
Nikki on
March 12, 2012
Certified Expert
A.

If they're flowering, they may have reached or are near the end of their cycle. They could also be getting too much sunlight or have a watering issue. For additional reasons for browning in the leaves, this article should help: https://www.gardeningknowhow.com/plant-problems/environmental/what-causes-brown-edges-on-leaves-of-plant.htm

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Asked by
G from Jersey on
May 4, 2012

Q. How Tall Can I Expect My Canna Lilies to Get?

Poor, sandy soil in South Carolina. Within 5 miles of the ocean.

Answered by
heart on
May 5, 2012
A.

It depends on the cultivar because there are some dwarf varieties. However most varieties will grow to six or seven feet. Be careful because if you live in a fairly warm winter area they can become intrusive.

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Asked by
RMikeJ on
June 11, 2012

Q. Why aren’t my canna Lilies blooming

I have several canna lilies planted in pots in my flower garden. They make beautiful leaves, but there is not a hint of flowering. They are in full morning and early afternoon sun, late afternoon they are in partial shade.

Answered by
Nikki on
June 12, 2012
Certified Expert
A.

A lot of times, plants won't bloom the first year they're planted. It takes a lot of energy to put out a bloom and plants will most likely focus on reproducing themselves through the roots before they bloom. Insufficient sun and water, poor soil, and overcrowding can also prevent the Canna from blooming. One other possibility, if none of these fit your situation, is a lack of phosphorus, which is responsible for blooming. This can easily be remedied by adding a "bloom booster" fertilizer or some bone meal to the soil.

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Asked by
kathyk1949 on
June 18, 2012

Q. canna lilies

I planted my canna bulbs around May 20th and they haven’t come up yet. It’s been really rainy here. I planted my elephant ears at the same time but some of those are coming up. How long does it take for cannas?

Answered by
Nikki on
June 19, 2012
Certified Expert
A.

Cannas like it warm, so I would give them a little longer just to see if perhaps the weather (or soil) is not warm enough yet. If, however, they do not begin sprouting within the next couple weeks, it is probably safe to say that they are goners, likely to rodents.

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Asked by
lale04 on
June 28, 2012

Q. Should the stems of the bloom on a canna plant be cut down

Should the stems of the bloom on a canna plant be cut down?

Answered by
Nikki on
June 29, 2012
Certified Expert
A.

You can cut down the flower stem as far as you like, but make sure to leave the foliage as the plant needs these to store energy for next year's flower.

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