[bigben]

I have been given a dozen or so double glazed windows and would like to build something to allow me to grow cherry toms and chillis in. Roughly speaking what height would these normally grow to?

[savbo]

i'd want about 3'?

[Kleftiwallah]

I would think twice about double glazed window units.  If (or when) they break, they break into squillions of small bits.  Picking these up from the soil after breaking will keep you occupied for days.  A nasty thing to find in your finger after you think you have removed them all.    Cheers,   Tony.

[JayG]

Depends on the variety; my cayenne chillies grow to more like 4' than 3!

If you have some bricks or concrete blocks you can build some flexibility into your design; I have a bought aluminium framed coldframe and have doubled the growing height by standing it on them (don't need to mortar them in place, just need to like doing jigsaws!) 

[bigben]

Thanks guys - will probably have to build it a bit deeper than I intended.