Looks like it is a magnolia.Leaf discoloration can sometimes be caused by nutrient deficiencies or chemical imbalances in the soil. Iron deficiency is a common cause of yellowing leaves in magnolias. If your soil has a high pH level, which makes iron less available, reduce the soil alkalinity using peat moss or another organic fertilizer.
four.mcs,
Jun 15, 8:18pm
It's an outdoor tree ;-0
four.mcs,
Jun 15, 8:31pm
It's a type of magnolia. And yes, its dying. why?
four.mcs,
Jun 15, 8:33pm
Thank you! Yes, it is a type of magnolia. I will investigate your suggestion some more, thanks for giving me somewhere to start.
heisei28,
Jun 15, 8:45pm
tis a fungus like leaf spot. Odd pattern though. Did it start that large or did heaps of small spots join up to create it. Neem oil can't hurt. Moist soil but free draining as it could just be root rot.
mkr_ahearn,
Jun 15, 9:06pm
maybe call it varigated and sell it on trade me for a fortune?
jenny188,
Jun 17, 6:23am
not 100% sure but it looks like a small scale incect in the junction between the leaf stalk and the main stem. Possibly treat it for a scale infection ?
hound31,
Jun 17, 6:31am
Maybe take it into a Garden Centre, some of the staff are really knowledgeable.
lakeview3,
Jun 17, 5:40pm
Sunburn? Frost damage? Or my other thought was some kind of systemic poison damage (except the other leaves seem ok? ).
breness,
Jun 19, 7:03am
Oh No. A Garden Centre owner's worst fear is some one coming in the gate with a diseased plant in their hand. Shudder. If you do this please have that leaf well contained in a plastic bag.
four.mcs,
Jul 17, 2:54am
Well, I have been assured it is fairly normal. Evergreens still drop a set of leaves every year, they just don't do it in one hit like deciduous.
There is a possibility there is a small imbalance in the soil, but it is not too much of a concern.
Thanks for your suggestions.
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