As fill in my planter box before topping up with soil
shabbychic8,
Dec 20, 7:03am
I would fill with soil and then top up with woodchips
steptoesnr,
Dec 20, 7:09am
No reason why not except; a) as the chips decompose they will deplete the soil above them of nitrogen untilthey have become fully decomposed. b) as they decompose they will diminish in volume so the level of dirt will also diminish.
choc04,
Dec 20, 7:28am
The planter box is 4 meters long and 500 high - I just want to save a bit on soil
shabbychic8,
Dec 20, 7:29am
Oh i get that, I was just meaning that I would use the woodchips on top, like a mulch, rather than underneath where the roots of the plants will be
choc04,
Dec 20, 7:49am
Gotcha . I didn't realize soil was so dam expensive
steptoesnr,
Dec 20, 9:01am
For all edible plants except asparagus you do not need your soil to be deeper than 150-200mm max. Fill below that with anything handy. Rocks,concrete,household rubbish, gravel-whatever takes your fancy.
dms01,
Dec 21, 11:58pm
if you can get it, polystyrene chips are good for the bottom drainage layer, as they will keep the weight of the planter down
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