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perennials in pots was Re: your mail

Anthony Gal wrote:
> 
> Thanks so much for the reply.  With so many postings,
> it's sometimes hard to tell which is a reply or not.
> 

I've not posted before and I've been away but caught the
tail end of this thread.  I've grown perennials in
pots for more than 15 years (as a renter rather than property
owner) and have discovered there are few that I haven't been 
able to grow.  Chris is absolutely correct that moisture is 
a key element.  So is pot size and understanding very well the 
requirements of the plants.

For instance, if you want to grow a perennial that has a long
tap root, you must have a very deep pot in which to grow it.
Baptisia Australis (False Indigo) is a good example of this.
You can run into some problems if you are using chemical
fertilizers due to buildup of salts; in this case the rememdy
is to unpot the plant, change the soil and thoroughly remove
salts from the container.  A problem with tap rooted plants.
The solution is to use organic fertilizers only when absolutely
necessary.

With woodland type perennials like Brunnera Macrophylla (False
Forget-me-not), which like moisture and light shade, providing
sufficient water can be an issue.  However the water-holding
granules now available can be of great assistance here.

Fundamentally, my advice is to identify the perennials you
love, research their growth habits (including root growth)
and give them a try.  There are also some excellent books
out on growing perennials (and woodies and other plants not
included as list topics) in pots.  A trip to the library or
bookstore can yeild a fount of information.

Jaime Knoble
NW NJ, zone 5-6
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