How to Plant Myrtle
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Although periwinkle is a groundcover, it is not a climber. There are other vines for shade, however, that might work, such as climbing hydrangea (Hydrangea anomala subsp. petiolaris), hardy in Zones 4 to 7, which has lacy white flowers. The cultivar 'Firefly' has variegated leaves.
Check with a local nursery for suggestions of shade vines that will do well in your area; also ask which vines would do best for a stone wall of a house, without needing extra support or possibly causing damage to the stone.
Myrtle (Vinca minor, or V. major) will do fine without mulch once established. If you have a weed barrier down already, and it is in good condition, then you can keep it, and plant the ground cover through it. If this is black plastic, for example, make an "X" cut into the plastic for the planting hole.
If your weed barrier is torn, you might consider replacing it before planting, so that weeds won't compete while the myrtle is becoming established. Once it fills in, there will not be many weeds.


Use a 10-10-10 fertilizer in the spring at a rate of 6 to 8 pounds per 1,000 square feet, but we really only fertilize when necessary.