GREENHOUSE. -

Ericas require great care at this season, as over-much artificial heat is injurious, and damp and frost are not much less so.
In mild weather, give air, and at all times be careful to avoid slopping water about amongst them, as such a course will end in their suffering from mildew, which is one of the worst enemies with which they have to contend.

Pelargoniums of the show class must be encouraged with the aid of an increased temperature and as much air as weather will allow.  It is common for them to be assailed with green-fly when the new growth of the season commences, but if the cultivator is on the look-out, and puts a stop to that pest in good time, it may be got rid of for two months to come. Keep as near the glass as possible, and of course avoid anything approaching a forcing
process.  Ventilate freely or mildew and damping will prevail, and many plants pushing their flowers will cast them unopened.

But to give air, there must be a gentle fire, so that, for the next few weeks, keep the fire going steadily, whether the temperature be mild or severe;  in the case of mild weather, give plenty of air, and have a look round to see if any plants are suffering from want of water.  A high night temperature is most mischievous, and is the common failing everywhere, especially in small gardens.
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**This article and the three preceding articles are all from the
"Gardener's Magazine".**
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