Top Questions About Pittosporum Plants

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Questions About Pittosporum Plants

Asked by
Anonymous on
June 15, 2011

Q. Bugs on Pittosporum

We have a lot of Pittosporum all over our yard. Some of it is not doing well. The local nursery said the plants have mealybugs and spider mites. They want me to buy some very expensive insecticide to get rid of them. Is there another way to rid a lot of plants of these pest?

Answered by
Nikki on
June 16, 2011
Certified Expert
A.

Give neem oil a try. It is very effective against these pests and many others. It is also safe for people and the environment. As a bonus, neem oil is a great fungicide too. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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Asked by
Anonymous on
August 15, 2011

Q. Scale Bugs

What causes scale bugs? I seem to have them a lot on my dwarf pittosporum. I have it in a flower bed with an automatic watering system.

Answered by
Nikki on
August 16, 2011
Certified Expert
A.

Scale will attack any plant, but they are more attracted to plants that are weakened. I would check the plant to see if it might be under stress from something (under-watering, lack of nutrients, etc.) and correct this while also treating the scale infestation.

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Asked by
Anonymous on
April 26, 2014

Q. Pittosporum Tree – Half Dead

I’ve just returned from USA, having been away since early March, to find, with horror, that my Pittosporum tree (about ten feet tall) has an awful lot of dead leaves on it. The top half is all dead, while the bottom half has some branches with lovely green leaves, whilst the other branches have dead, brown leaves. I am so, so disappointed, as it’s one of my favourite trees! Could this be the earlier cold weather, or could it be lack of moisture while I’ve been away? And more importantly, do you have any ideas what I should do to help it? Many thanks.

Answered by
Nikki on
April 26, 2014
Certified Expert
A.

It is likely the cold caused the damage, as it would affect the tree in this way (the closer to the ground, the more ground heat would have kept the frost off). But just to be on the safe side, I would treat the tree with neem oil. This will treat the tree for both any possible fungus or pests that may be attacking the tree.

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Asked by
Jewelrox on
November 3, 2014

Q. Variegated Pittosporum-Can it be pruned now?

I live in zone 8 or 9, 1 1/2 hours north of Houston. I usually prune my variegated Pittosporums in late Jan. or by Feb. 14th, but they grow too well and I’d like to start pruning them in late summer or fall, as well as in Feb. Any problem with this?

Answered by
theficuswrangler on
November 4, 2014
A.

If you prune just after flowering, you should be able to get more flowers the next year. This article has more information: https://www.gardeningknowhow.com/ornamental/shrubs/pittosporum/growing-japanese-pittosporum.htm

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Asked by
martin106 on
March 16, 2015
Bognor Regis

Q. which pittosporum grows best in shade?

I have a wall which I am trying to cover but it is in total shade.

Answered by
shelley on
March 16, 2015
Certified Expert
A.

Japanese Pittosporum grows well in the shade.

For more information about Japanese Pittosporum, please visit the following link:

https://www.gardeningknowhow.com/ornamental/shrubs/pittosporum/growing-japanese-pittosporum.htm

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Asked by
ericjabaley on
July 7, 2015
8a Wilmington NC

Q. did i kill my pittosporums?

My pittosporums were quite large, 8-9 feet, so I cut them way back to around 2-1/2 feet. This was right before a heat wave that entered our area in mid June. The remaining leaves have all turned brown, and I have not seen any new growth (it has been 3 weeks). I have cut them back in a similar way in the past and they responded well. I am afraid I may have killed them this time. Is it a bad idea to cut pitts back so far?

Answered by
Downtoearthdigs on
July 8, 2015
Certified Expert
A.

Pittosporums generally do well with heavy pruning. The combined heat and pruning may have stressed the plant. A stressed plant can become vulnerable to insects or disease. Look for any signs of other issues on the plant and treat if you need to. Neem Oil is a good treatment.
I would wait and see.
Here are a few links for you.

https://www.gardeningknowhow.com/ornamental/shrubs/pittosporum/growing-japanese-pittosporum.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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Asked by
Anonymous on
July 24, 2015

Q. pittosporum limbs dying

I have some large pittosporum (about 5 ft. across) that are developing some dead patches. It seems that whole limbs are dying while areas next to them are unaffected. Any ideas? I have about 10 of these in my landscape, and about half of them are having this problem.

Answered by
Downtoearthdigs on
July 25, 2015
Certified Expert
A.

How is the soil (i.e. drainage, moisture level, etc.)? Have you watered frequently or had a lot of rain? Pittosporum are well known for having issues with root rots, most commonly attributed to Phytophthora. Here is more information: https://www.gardeningknowhow.com/plant-problems/disease/what-is-phytophthora.htm

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