2. Late Freeze
In case you’ve ever grown a fruit tree, that is going to sound acquainted.
Because the tree begins to develop leaf buds, they’re vulnerable to wreck if there occurs to be a late freeze. A late freeze can kill the rising leaf buds.
Japanese maples aren’t extraordinarily delicate to frost, however a tough freeze that lasts some time when the buds are creating could be sufficient to kill them and forestall the tree from producing foliage.
Most maple timber will develop new buds after the preliminary ones are killed. Others may shed the department. Both means, there isn’t something you are able to do however help the tree.
3. Root Rot
Japanese maples love moisture, however not an excessive amount of. Phytophthora root rot is brought on by oomycetes within the Phytophthora genus.
The pathogens want water to maneuver and reproduce, in order that they thrive in soil with a number of moisture.
Signs will depend upon how far the illness has progressed and what time of 12 months it takes maintain.
Within the early levels of the illness, the older a part of the branches will leaf out, however younger suggestions gained’t, as they endure from dieback. Because it progresses, whole branches may die.
The tree may additionally leaf out late or look like stunted and unhappy.
It’s type of onerous to be completely positive you’re coping with root rot as a result of the signs will be type of nebulous.
The simplest approach to inform what’s occurring is to dig down and take a look at the roots. There will likely be no feeder roots, that are the smaller, extra delicate roots.
In superior levels, the bigger roots will likely be soggy and black.
You’ll have to drench the soil in fungicides to kill the pathogens. There are a number of choices that may work.
Copper is an effective place to begin, however extra superior circumstances want a product that accommodates hydrogen peroxide and phosphorous acid or Bacillus subtilis.
Serenade ASO has confirmed to not solely stop but additionally kill Phytophthora pathogens.
Serenade ASO
You’ll find Serenade ASO accessible at Arbico Organics.
Comply with the producer’s instructions carefully and your tree ought to be on the street to restoration very quickly in any respect.
4. Verticillium Wilt
If a part of the Japanese maple is useless whereas different elements look like completely nice, it’s attainable that your tree is affected by verticillium wilt.
Attributable to the fungus Verticillium dahliae, this illness restricts the power of the tree to soak up and transfer water.
It may well kill a whole tree, however you’ll sometimes see parts of the tree die earlier than your complete specimen succumbs.
So, if half of your tree is leafing out and the opposite half is naked, it might be vert.