Question From: B. Spagnolo - Eugene, Oregon, United States
Q: we have a very mature evergreen clematis in our backyard that has started dripping a lot of sap. The vines cover a 10' x 12' patio and there is sap covering the whole area. What could be causing this?
Look closely to see if the vine tips are not covered in tiny aphids. You may need a magnifying glass. They drip a kind of honey dew. Since they are overhead I recommend you use an organic OMRI listed spray such as AZAMAX. It's non-toxic. Plan to respray once for a month or so. Best And Happy Yardening, Nancy.