Questions re soil mix for Figs and Blueberries, Bay and peach
Let me start by saying I never knew potting plants was something that required such consideration! I have recently acquired a bunch of plants I wish to grow in containers, and have started researching the best media for long and happy, productive lives.
Currently I have 3 types of fig to plant out, four types of blueberry, a bay tree and a miniature peach.
I live in Canberra Australia where we consistently get to -5c in winter and can hit -8 or -9 without too much trouble, although this is not usual. In summer (as was proved last week) we can get extremes of heat to 42o and long periods around 34-35o, although usually average about 30o.
From what I have been reading I believe that Tapla's gritty mix might be the best solution, but it seems so alien to me, is it basically looks like growing in rocks!
In particular I was going to follow this thread http://forums2.gardenweb.com/forums/load/contain/msg1119054422545.html who sourced Australian substitutes for the ingredients.
What really strains my brain is the thought of nutrients. The mix seems to be pretty inert of everything and does this mean I will be fertilising every day? This seems excessive and time consuming, especially when you see pictures such as this http://figs4fun.com/More_Info_Pots.html which I am almost certain would not be grown in a soil-less mix.
I also wonder about the mixes ability to hold water during exceptionally hot days, think 40 for a few days running.
So I spose my final and main question is; is there a soil mix that would be ideal for figs, blueberries, bay and peach that would allow all the beneficial properties of Tapla's mixture such as avoiding root rot, and allowing plenty of air, but that will also support some sort of nutrient holding, so I can fertilise once weekly? Or should I stick with the gritty mix?
PS I am aware of the acid requirements of blueberries and the slightly alkaline requirements of figs.