Are there any fans of Duncan?
I think Duncan may be my favorite mango I grow. Flavor is a 9 out of 10 for me. Disease resistant. Very productive. Season this year was long for me with first fruit being eaten first week of April and last being in July. There are other better tasting mangoes out there but for an all around workhorse it wins for sure. I know a lot of people plant Glenn for this reliable productive role but I think Duncan wins the title. I will likely be moving to a different house within a year or two and the first I plant will be another Duncan.
Did you find a big difference between early and late Duncans, as others have mentioned?
To be honest very little difference. They get awfully close to tree ripe wince the yellow on one side touches the bottom of the fruit it is about to drop. Take it off the tree and it’s ready in as little as 24-48 hours inside. The early ones if picked early can have a slight washed out taste but it’s all in when they are picked for me. I had maybe 2 that were a little bland the rest were excellent.
As for growth habit mine has not been in ground very long and I never topped it or tipped it until this season. I got it as a 7 gallon from Excalibur and it has grown well and fruited with about 20 fruit the second summer it was in ground. I would love to see what it looks like for some other people that have had them in ground for a while.