After watching a couple of years of Monty Don on “Gardeners’ World,” one of the differences I noticed was he doesn’t use peat moss in the U.K. He mainly uses a lot of compost, perlite and grit. I’ve also never seen him use fertilizer other than compost which he makes himself.
You would be hard pressed to find this mixture in any nursery or big box store.
What I have found is a mix which seems similar to what Monty Don uses.
SLC Grower’s Mix has a combination of pine bark fines, compost and PBH rice hulls, although they wouldn’t tell me the exact percentages.
When I talked to SLC they did indicate that they would recommend using Osmocote if I was planning to grow from small size to large size in a pot. He recommended using a medium dosage. They do include a small starter nutrition in the mix and a micro-nutrient charge.
The product will be a bit drier since it drains so well. You may have to water more often.
I’m going to be doing some tests with this product versus my standard BX ProMix. The SLC mix is only $6 per 2 cu. ft. bag.
You would obviously be better off buying the mix in bulk, if you have a place to dump it.
The one odd thing about this mix is that it is in bags which say Cotton Blossom Compost.