Milkweed planted by birds?

Spring has definitely sprung here in Florida.  Everything is beginning to bloom! Here is what’s going on.

• I have 3 guavas and it looks to be a bumper crop for this year. 
• My charlie brown orange tree is looking so much better. 
• I cut back the moringa’s since most died in the frost and they are really bushing out. 
• I topped the mulberry and it is producing wonderfully.
• The pignut hickory is blooming to life.
• The elderberry has put out 5 babies and it had aphids on it along with a couple of lady buds.