Is this Box blight?

Hi all.

I have two Box plants in containers and have had them just under a year. They are kept in light shade have always been side by side and are always watered at the same time.
Suddenly, one has changed colour, the leaves have turned very pale but are not dead or crispy. The other one has signs of the same thing but only a small area.

Does this look like Box blight or is there perhaps some other explanation?


Thank you.

 

Something else i think. If it was blight i would expect to see blotches on the leaves and black streaks on the stems.
Have been hit in the past by it. Now i dont prune till September earliest.

 

I'm wondering if I over watered. I might have got a bit carried away considering all my other plants are in full sun whereas these are in shade.

 

@Marley Farley

I seem to remember they had been trimmed when I bought them and the leaves have been falling off ever since. So far, I have not trimmed them myself but will do so now and feed with Tomorite. It happened almost over night tbh.

 

Heatstroke,seriously. New soft leaves exposed to unusual heat.

 

Thanks @Marley Farley. I think I will have a look at the roots first and see whats happening and then decide whether to cut my losses or not.

 

Thanks @WeeTam

I did wonder about that too, a few plants have gone a bit pale in this heat, that's why I have kept the box in the shade. I did lose another box plant early on which was in full sun.

 

As an update, I discovered that the roots were indeed soggy. I tried to save the plant but alas had to throw it out in the end. The other one is still fine and I water it maybe once a week if it's lucky.

 

I didn't want to start a new thread about box blight but I wondered if anyone could tell me if this is what is affecting one of my box plants.

In late summer last year it developed what appeared to be a light colour fungus (if I remember rightly). We treat it with a fungicide and immediately moved it into my back garden as far away as possible from my remaining still healthy box plants in the front garden. If it is blight then it will be thrown out/burnt immediately as I do not want to risk losing my other plants. <amy thanks for your assistance as always.