Q: We have a fifteen-foot tall Indian hawthorn tree in our courtyard that is losing leaves. But most Indian hawthorns are shrubs, right? How can we save it?
A: Well butter my butt and call me a biscuit! I did not know Indian hawthorn could grow so big. Much to my surprise, my bet is that you do have an Indian hawthorn tree! It’s probably a ‘Majestic Beauty’, a large shrub that can be pruned into a tree form. Indian hawthorns are famous for getting leaf spot disease…but some (including ‘Majestic Beauty’) are more resistant than others.
Here’s what I’d do:
1. Prune away all of the stubs left by the last pruner. Make the cut about a quarter inch away from the larger trunk/branch the stub comes from.
2. Clean up all fallen leaves and put clean mulch under the tree.
3. Spray now with one of the products mentioned here: http://www.aces.edu/pubs/docs/A/ANR-0392/ANR-0392.pdf
Note how often to spray.
4. Fertilize with Holly-Tone at the rate noted on the bag for landscape shrubs.
5. Keep fingers tightly crossed!
TIndian hawthorns that don’t seem to get leaf spot as badly as others: ‘Calisto’, ‘Majestic Beauty, ‘Yedda’, ‘Snowcap’,‘Southern Moon’,‘Spring Sonata’, ‘Eleanor Tabor’, ‘Indian Princess’, ‘Betsy’, ‘Georgia Petite’, ‘Olivia’, and ‘Snow White’. Be sure to purchase plants showing no leaf spot symptoms.