What’s Wrong With My - Ume / Prunus Mume and also Nanking Cherry?

[エドガー]

I think those bumps are lenticels—a mechanism for plants to exchange gasses with the atmosphere.

Did a quick Google search.... aren't lenticels elongated and scales round? I read that's how you distinguish them from each other.

The dots I have look very similar to San Jose Scale pics I see on Google.

I can also scrape them off with my fingernail (which means it isn't part of the tree)

 

[parhamr]

Oooh, dang. Then maybe those are scales! I’ve definitely seen them round and easily removed. I was hopeful from what I could see in the photo.

I recommend gentle, manual cleanup for scale. It’s gross, but effective and very low impact for the living things you want to remain living.

 

[エドガー]

Sprayed yesterday with horticulture/all-seasons/mineral oil... will follow up with another spray in a week.

Might also feed it systemic to be safe (I don't plan to eat its' fruits anyways for a few years... since it's still in development and all fruits will be removed for optimal growth).

 

[エドガー]

With the hot hot weather finally cooling down a bit, my small/slow-growing Pink Ume recently and finally sent 1 new small growth/shoot (4-5" so far) on 1 of its' branch tips. But, still nothing like my White Ume growth... which continually sends multiple countless long shoots measured in feet already.

I also fed the Pink Ume systemic last weekend, just to be safe because those tiny red/brown spots I see might be scale.

 

[ChristianDGreat]

Is mume can handle 100+ degrees in full sun? or need shade?

 

[エドガー]

Mine does fine in full sun... both of mine are next to south facing walls (north side of yard), and/or west-side of house - sunniest areas of my yard.