Hi. I grew two Jacaranda trees from seed in 2016. They are both now nearly 10 feet tall, 3 years old and no flowers!? They are in a north face, sunny position. Do they need to have nutrients? Thank You. Kind Regards, Glenn.
Unfortunately, the answer is not very pleasing to hear. They are very picky about their climate. Anything outside of what they prefer will cause them to fail to flower, as well as show improper growth patterns.
Unfortunately, there can be a large gap for when it, first, flowers. It can take between 2 and 14 years before you see the first bloom! This will depend, largely, on proper climate and care.
This article will help you to know what these trees will require: https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-not-blooming.htm
Recently I've been growing 4 Bonsais - Picea Mariana, Pinus Aristata, Pinus Thunbergii, and Jacaranda Mimosifolia - and one of the Jacaranda seeds hasn't sprouted. It's been a little over 2 weeks and all the others have already at least 2. I'm wondering what went wrong during the germination process. I'm thinking it might have something to do with the difference in seed shape and thickness. I still have half of the seeds left and am going to try again in less than a month if it shows no progress. If anyone has any advice on Jacarandas or Bonsais in general I would really appreciate it, I need all the help I can get.
The art of Bonsai takes lots and lots of practice! Don't be discouraged, as you may kill hundreds of seedling, and trees before you get one that grows like you want.
Learning the basics, and starting with a tree that is very hard to kill is a good idea. Privet is forgiving, and will be easy to form into bonsai since they are already tolerant of cramped roots, overpruning, and very little feeding.
As far as why a seed didn't germinate... There are too many reason, but trying again will be the first thing. If the other seeds are germinating, then it could be that the one particular seed was dead, or inactive.
This collection of articles will help you with producing Bonsai Trees: https://www.gardeningknowhow.com/category/houseplants/bonsai
The old tree was killed (we think) by lawn service men scouring the trunk with string trimmers. I put a ring of concrete landscaping blocks around it. Wife thought that seashells would deter weeds and look nice. I put them but now I'm wondering if they might hurt the tree somehow. Any ideas?
They won't hurt the tree, but they won't really keep weeds out either. As the shells degrade, they slowly leach calcium into the soil which will raise the pH of the soil.
https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-information.htm
The branches are starting to die on my jacaranda tree. The branches with leaves are a lighter shade of green than that of my other jacaranda trees. The tree in the photo get watered most frequently (once every two days) with sprinkler system. Is this a watering problem or something else? PS. Just after it started budding we had a heatwave and eveything turned brown that was green.
Yes, the overwatering is likely causing disease. These should only need water during drought, or periods of dry weather.
You may want to treat with a fungicide. This article will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
Here is an article that will help you with the care of the tree: https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-information.htm
We live in Los Angeles north west area and are having trouble finding Jacaranda trees for sale now April, when do they become available.
Now or in fall is appropriate. Just avoid temperature extremes. This article will give you more information on these trees: https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-information.htm
it looks like only one side of the trees have leaves, the other side shows dry branches, is it dying?
Unfortunately, your photos did not come through. I would advise contacting the city, as they will need to come out and assess the tree.
I believe this is a Blue Jacaranda tree but not entirely sure. The bark is cracking and peeling off the trunk, leaves turned yellow, some portion of the trunk peeled off. Thank you !!! please help me !
This seems to be an aged tree. They don't live a terribly long time, so it is probably getting too old and weak to sustain its own weight. This is common as the Jacaranda ages. You can choose to take the tree down, or let it fall apart on its own.
Here is an article that will help you to care for the tree:
https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-information.htm