The ‘pellets’ are resin coated according to Osmocote. I’ve spent a couple days digging in my large pots & I can see evidence of old Osmocote pellets. I don’t see that as a problem. If anything, it can promote drainage in my pots so the soil won’t compact, maybe on a small scale. But no worries. Osmocote is awesome. Hopefully, the company is working on a more biodegradable approach. Most fertilizer, even organics, will leach out of the soil eventually. So, there is that to consider as well.
That’s a great question. I have been using Osmocote for maybe 20 years. I went out to look at my big pots where all my bulbs are plus my Cymbidium orchids. I did not see any evidence of the Osmocote resin coverings. So maybe they do breakdown with time. Either way it’s not a problem. Osmocote is the best!
I use it on my camellias & azaleas & they really put on a show this year. My daughter has gorgeous camellias at her place & she only uses Osmocote on them. They are huge, a pretty deep green for the leaves & with a very vociferous flowering habit.
YES, I brought mine two weeks ago and my plants love it! They are growing heathy and strong!
How long it lasts relies partially on how much water it gets. If added to a planting hole and watered well, it would probably last about 3 months. For something in the ground, you may be better off choosing a different type of fertilizer, since you need to work this into the top several inches of soil, which can be tricky if you have ground cover. If your ornamental trees are in pots (for example, I have trees in 25 gallon pots), this product works well. The amount used in a 25 gallon pot is large - around 2/3 cup.
I use Osmocote Plus on all my tropical fruit trees. It is 15-9-12, which is a ratio of 5-3-4. I find that it works just fine on my exotic tropicals trees.
Yes! I use it on all my plants, indoor & outdoor, including Orchids. I have been using it for years.
It will only work if it DOES get wet.
Yes, according to the life cycle of the plant. Obviously you wouldn't fertilize when the plant is dormant.
I usually use liquid fertilizer for my indoor orchids, begonias, pothos etc & usually at half strength. Houseplants don’t seem to need a lot of fertilizer but a little is welcome.