Hi, I transplanted bareroot Italian Cypress plants a month ago. About 1 -2 weeks after transplant some of the trees starting to look droopy and began turning brown. I believe they are suffering from transplant shock. Do you have any recommendations for helping them recover?
A consistent watering regimen is needed immediately following planting in order to ensure that your new planting remains healthy and adapts to its new home.
These articles will help you.
https://www.gardeningknowhow.com/ornamental/trees/tgen/watering-newly-planted-tree.htm
https://www.gardeningknowhow.com/ornamental/trees/italian-cypress/growing-italian-cypress-trees.htm
Our two Italian cypress are probably 40 ft tall. I can no longer trim from the roof line up. Can I top them just above the roofline by giving them a flat top? Will this harm the tree? Should I put some sort of coating on the bare center stump? We do have small tree borer beetles in our area, but the tree is healthy so far.
It won't harm the tree, but it will destroy its shape. The tree will never recover the general Cypress look. If this strange look is not a problem for you, then it won't harm the tree.
There are plant sealants on the market, and it is a good idea to use them on wounds. We do not recommend particular brands, but a Google search will reveal several.
Here is an article for more information on the tree:
https://www.gardeningknowhow.com/ornamental/trees/italian-cypress/growing-italian-cypress-trees.htm
How regularly should I water Italian Cypress?
You will want to water once the soil is dry, completely, down to about 3 or 4 inches. There is no set time frame for this, as it will be determined by the climate at any given time.
Typically, unless there is a drought, extra water will not be necessary, as the soil takes quite a while to dry down to that depth, especially in your area, but you may require extra watering during the dry periods. Here is an article that will offer more information on the tree:
https://www.gardeningknowhow.com/ornamental/trees/italian-cypress/growing-italian-cypress-trees.htm
This article will help you to learn how to use a moisture meter:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
We have about 50 Italian Cyprus trees lined up in a row in our back yard in Los Angeles, which blocks the view from the apartment behind us. We planted the these trees about 20 years ago and they are full grown. Unfortunately we neglected to water them for a while, as there was illness in the family, and it just skipped our minds. We noticed that about 6 trees on the left side of the property are almost completely brown---with the needles dried out---but we want to try to salvage them if possible. Please see attached pictures. We want to know the best way to heal these trees: How much water do we give them and how often? Is there any fertilizer or plant food we can give them and how often? Any other advise? Thank you!
Unfortunately, damage this severe will mean replacing the tree.
Watering will consist of testing the soil down to about 3 or 4 inches, and once dry down to that depth they can be watered.
These articles will help:
https://www.gardeningknowhow.com/ornamental/trees/italian-cypress/growing-italian-cypress-trees.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
There is a big live Oak that shades the area where the Italian Cypress would go for 1/2 the day.
This tree should thrive in your area, even with a bit of shade. It may be worth pruning the oak back a bit if it becomes shady for too many daylight hours.
I have a 70 foot Italian Cypress tree planted very close to my home. The lower six feet of the trunk is bare, but then the lowest branches are touching the roof of the house. In addition, there are some drooping branches higher up. Is it possible to trim the lower branches up higher so that the tree is not touching the house? If so, what is the proper procedure for doing so?
Sure! Trimming them wouldn't hurt a thing. As for procedure- This spot looks like it will be uncomfortable to work in and around. I wouldn't worry much about correct procedure as long as you can take off the entire branch that you intend to cut. Just make sure to cut it as close to the base as you can.
Because it may be difficult to get power tools up there, you may or may bot be limited to hand saws or tools.
Here is an article for more information on the care that these trees require:
https://www.gardeningknowhow.com/ornamental/trees/italian-cypress/growing-italian-cypress-trees.htm
I have dug out the top gravel and the base layer scalpings of the drive to reveal the earth underneath, around 400mm deep, which is still rather stony, I am at the right depth for the trees which are 2.7m tall not including root ball, the earth is compacted so the trees sit solidly. My question is what should I back fill the trench/hole with? Should this be fresh top soil or what would be the recommendation? Would fresh top soil prevent root growth into the natural earth under the root balls? There is a pile of earth and stone with a little scalping which came out of the trench/hole could I use that to back fill or maybe a mixture of that and fresh top soil?
Definitely, use topsoil, though I would dig a much larger bed and fill the whole thing with topsoil. You may find that the trees perform, poorly, in that rocky soil.
Here are some articles that will help:
https://www.gardeningknowhow.com/ornamental/trees/italian-cypress/growing-italian-cypress-trees.htm
https://www.gardeningknowhow.com/special/organic/the-importance-of-soil-for-an-organic-garden.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/using-topsoil-and-potting-soil.htm