Hey, Phil!

The quick answer is, No, you don't need to include the slow-release fertilizer.

That said, let me give a longer answer. If you suspect that you might not fertilize
as regularly as you hope, then you might consider mixing in some of the slow-release.
I use Osmocote 4-month because I'm not as consistent with fertilizing as I should be.
With a 4-month formula, I can also be fairly certain that the fertilizer will be gone
by the end of the season.

In fast-draining soils, these slow-release products don't last as long as advertised
for the simple fact that we water more often - which has the benefit of flushing the soil.

Josh

Gotcha. I held off, I will fertilize too frequently if anything, withOUT the slow release in there. I was more worried about a variation in the two ratios and that the slow release might have been a more desirable proportion of each. I know I saw that Al uses a fertilizer with the same ratio, but that Foliage Pro has far more micro-nutrients. Also, the potting soil I used contains bat guano and a couple other compost ingredients.

4/6 plants are repotted and looking happy on day one. Just the pair of Habs to go!