By Cliff48
United Kingdom 
I have a lot of lobbelia plants in my garden borders which have now finished flowering & left dead trailing stalks, do I cut them back to ground level or remove the whole plant & plant new next spring? Also how do I trim back out of control ground cover plants?
15 Nov, 2013
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annuals
Answers
Yep I go allong with MG the cost of the seeda is small - so just sow new seeds in the spring and just pull the old ones out and bin - I bring mine on in March in the green house with heat as plug plants - Ken
15 Nov, 2013
If your ground cover is taking up too much room the usual thing is to just dig out what you don't need.
15 Nov, 2013
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Previous question
Lobelia is a half hardy annual so remove and plant news ones, or grow from seed, in the spring. Depends on the ground cover plant you are asking about.
15 Nov, 2013