While newly laid.
Weeds between concrete slabs.
Weeds growing in concrete expansion joints.
Ideally you want to remove the entire weed including the roots but this can be quite hard when weeds have squeezed into minute cracks in the paving surface.
If your weeds are coming up through cracks in your concrete driveway or the seams between the slabs you can prevent future weeds by sealing the cracks.
Cement crack filler is inexpensive and easy to find at hardware stores and home improvement centers.
They also look unsightly and make any paved area look unkempt.
Weeds growing in the seams and cracks of a sidewalk driveway or patio can be annoying and unsightly and can be considerably more difficult to remove than weeds in a garden or flower bed.
Prevent weed growth between paving slabs with the help of polymeric sand polymeric sand can be used for more than just preventing weeds from popping out between block paving.
Dealing with the problem quickly is the best prevention and there are fortunately various methods for getting weeds under control.