Hi Charlene
I grow Bacopa 'snowflake' which towards the end of summer tends to get leggy - sounds like yours. However, last year as it was still blooming I let it carry on and it provided flowers all through winter on its ever lengthening stems.
In early Spring (March) I eventually cut it back to about 3 ". It took a while to 'get going' but by early summer was blooming away and so far it is still lookling fresh.
Now is a good time to take cuttings - especially as its tender in frost.
Not sure how your post ended up in the Aphids forum topic, other than that aphids are probably the only pest of Bacopas. Here is the plant details page for your [link=https://www.shootgardening.com/sitePlant.php?plantid=3939&name=bacopa-snowstorm-white]Snowstorm Bacopa[/link]
Replied: Thursday 10th of September 2009 10:23 AM