> I recently transplanted (into pots) several herbs, including
> pennyroyal, chives, lemon balm, savory, and oregano. Seems
> like the lemon balm is taking off well, but the other plants
> are not doing as well. The pennyroyal looks like it is trying
> to bloom, but leaves look wilty. Chives likewise look like
> they are slowly dying.
> Any suggestions as to where to look (WWW, FTP sites, FAQ's)
> for information as to what conditions each of these plants
> would do best in? Too little sun (1-2 hours/day direct
> sunlight due to obstructions by redwoods)? Too little or
> too much water? Planting pot too small?
most of the rest of this genus like plenty of sun, although I have grown
them in some shade (the foliage becomes more slender and taller). They
also like a well-drained spot, so not too much water. Some lime in the
soil won't go amiss either. Oregano (Origanum vulgare) likes similar
conditions, as does savory (although not quite to the same extent)
Pennyroyal mint, on the other hand (NB is this Mentha pulegium?) grows
on damp sandy heaths, and likes plenty of moisture in the growing
season, or it will get mildew. It will be quite happy with its roots in
water, and appreciates plenty of sun.
Lemon Balm is really easy to grow, in sun or shade, but is a strong
tall plant and may be outcompeting the others. In a pot competition
for light and nutrients can be strong, and if you have one plant
suited to the conditions and some others which are unhappy, you will
rapidly find yourself with one big plant! Your best bet is probably to
split the plants up into several pots. The lemon balm would be best on
its own, since it's so big. The chives, oregano and savory could go
together, but it's probably best to use a soil-based rather than a
peat-based compost, and also to add some grit to improve drainage.
Put them in as much sun as possible. The mint is also best grown in a
pot on its own because it likes so much moisture, but you might get
away with putting it with the others if you keep the pot quite well
watered (but not overwatered or the others will start to go yellow).
Oh, and beware of the oregano taking over - it makes a good bushy
plant once it gets going, and seeds itself.