My orange tree has produced for the last two years until this year when unusually cold weather and wind knocked the blooms off. Then it got black mold on the leaves. The mold has been there for a few months. Can I still get rid of it and make my tree healthy?
The black mold is most likely sooty mold, which grows on the sticky honeydew excreted by scale insects. (Other insects in the same family, aphids and mealy bugs, also excrete honeydew, and treatment for them is basically the same.) You can wash off the sooty mold, but unless you get rid of the bugs, it will come back again. Also, the bugs are the ones that damage the plant. This article has more information: https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/controlling-citrus-scale.htm
I planted a mock orange bush 5 years ago and it has not bloomed at all. I was told to give it fertilizer, still didn't bloom. Was told not to cut it back and it would bloom; it didn't bloom. Was told to dig around it as if I was going to dig it up, to shock it; it still didn't bloom. It gets sun (east) all day long.
What variety of mock orange do you have? Is it 'Minnesota Snowflake'? (Philadephus x 'Minnesota Snowflake')? I have read that this particular variety doesn't flower well at all.
Also - any signs of an insect infestation? Insects can affect blooming.
Does your Mock Orange receive consistent moisture?
Perhaps a regular watering schedule would entice this plant to blossom for you.
Here is a link to review proper care and growing requirements.
https://www.gardeningknowhow.com/ornamental/shrubs/mock-orange/mock-orange-bushes.htm
Is it true that mock orange bushes harbor fleas that kill other plants?
I conducted some research and was unable to find anything to support that theory. However, I did find positive information suggesting that it attracted honeybees and butterflies when it is in bloom.
For more information on mock orange bushes, please visit the following link:
https://www.gardeningknowhow.com/ornamental/shrubs/mock-orange/mock-orange-bushes.htm
My bush is now 3 years old and has never flowered. What am I doing wrong?
Here is a link.
Familiarize yourself with the care requirements.
Mock Orange is a heavy feeder.
https://www.gardeningknowhow.com/ornamental/shrubs/mock-orange/mock-orange-bushes.htm
Doesn't matter how much the bush is treated before it flowers, sadly, black fly absolutely covers the bush rendering it virtually black and wisened leaved.
My guess would be that is has a pest of some kind, likely aphids or a similar sap-sucking insect. They generally tend to secrete honeydew, a sticky substance which may be present on the leaves. This honeydew is what attracts the flies. I would recommend treating the tree with neem oil, which should take care of the pest problem and in turn take care of the black flies. It is also safe to use and an effective fungicide as well should any other issues pop up due to the stress from the pests. It is often sold as fruit tree spray at stores. Check the label. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
How can I get it to bloom? It used to flower profusely. I cut it back to stop the cats from escaping from the garden. It has grown back with lots of stems from the base but these don't flower and just have lots of large leaves. What can I do to get it to flower again?
Here is a link that has good care and growing information.
A few simple things should get your shrub back in order.
Mulching, pruning and fertilizer.
https://www.gardeningknowhow.com/ornamental/shrubs/mock-orange/mock-orange-bushes.htm
My mock orange shrub is dying from the center. Leaves turn brown and fall off. New growth is on the outside of the shrub. What is the matter with it?
A number of things can actually causes this. The most common is over-shearing, which leads to thick outer growth and blocks sunlight from inner branches of the shrub. Root or crown rot is another possibility, as are other diseases and pests. These articles will help with rot issues: https://www.gardeningknowhow.com/plant-problems/disease/crown-rot-disease.htm
https://www.gardeningknowhow.com/plant-problems/disease/root-rot-in-garden-plants.htm
Generally, it helps to prune out the interior, opening it up to air and light, or even some rejuvenation pruning, though this drastic measure may limit blooming next season. Here is more info on this type of pruning: https://www.gardeningknowhow.com/ornamental/shrubs/shgen/rejuvenation-pruning-tips.htm