Ask a Question
Notify Me On Question Update
Email this Question
I have much vinca minor (dwarf periwinkle) planted about 20 years ago as ground cover in my yard. Some is in full sun, some is in part sun/part shade. Some small areas of the vinca (3-4 feet in diameter) in several places in the yard have begun the most recent two Springs looking yellow/pale green, not deep green like the rest of the gardens. Neither have they flowered. A couple of the small yellow/pale green areas e thinned, and some of the plants died. The veins in the leaves of the unhealthy plants are green, but the leaves are yellow/pale green. They have remained thus all summer. They don't turn brown and dry and die. I have treated with fertilizer and snail bait, but neither has had any effect on the unhealthy looking plants. Are these plants deficient in some nutrient? Healthy plants I planted in the bare areas had a hard time establishing but did eventually and have not paled. What should I do? I don't want the problem to spread. The periwinkle has added a great texture to the yard.
Rate This FAQ
From the symptoms you are describing it sounds like your Vinca has iron chlorosis. This is a problem that some ornamental plants have with accessing the iron in the soil because of our typically high pH levels. Treating for this condition can be challenging and often the best control method is to use plants that are iron efficient. Below I have included a link to a fact sheet about iron chlorosis that contains more information on the condition as well as treatment options and recommendations.
Submit Your Suggestion
Other Questions In This Topic
- In the past you've offered a lawn-problem analysis --- as I recall a sample was brought in to your office and a quick analysis was done --- is the program still active? What is the schedule?
- We just planted a maple tree in our back yard and noticed today that almost every single leaf has large circular spots that appear to have been "eaten" out of the sides of the leaves. I've read about a tar disease, but I don't really see the tar on the leaves. What could it be and is there something we should do about it?
- What is the cost for a soil test?
- We are putting in sod in our front yard - not a lot of traffic. Would like you opinion on if we should put in Kentucky Blue Grass or a biograss?
- I planted a spanish fir in my yard just two weeks ago. It appears to be dying. How often should I be watering it? And how much water should I be giving it each time that I water?
- I have a huge weeping willow in my front yard. My next door neighbor swears the root system has invaded her septic line. She had a globe will previously taken out that was about 10 feet from her main water line while my weeper is about 30. My own line is about 15 feet from the weeper. Is there any validation to her statement?
- It looks like something has bitten off whole leaves and blossoms from my tomato plants. They seem to be cut clean. What could be causing this and how can I fix it?
- Do garden vegetables such as tomatoes and cucumbers require sun protection,(shade), during the hot part of summer?