Last week I red your mail on the list about fertlizer &
soil, but only now I have time to tell you my experience.
I have few space and therefore I have
to grow up many Pelargonium in little pots, even if they are not
I buy peaty loam in the Italian
garden shop and I add to it few clayey soil that I take from
Before to mix the clayey soil with
the peat I disinfect it in my oven.
This procedure in order to avoid
weeds and diseases.
The clay prevent the soil to dry fast
under the sun. The soil with the clay absorb in a better way the
water if it become dry.
I add also some earthworm humus like
manure and some perlite for farming which lighten and air loam better than sand.
It also absorb the excess of water.
I prefer to use terracotta pot
which keep more fresh the roots with sun. The also leave the excess of water to
At the bottom of the pots I put a
plastic net with small mesh and a layer with balls of expanded
The net keeps free the draining hole.
The roots have always a dry layer to breathe.
During the good season I add
two o three times tomato fertilizer with slow transfer or other fertlizer with
high quantity of potassium (like N9P6K15 with
Every year towards the end of winter
I change the pots to avoid to have too much salts in the soil and I prune
from north of