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
- How do I get rid of the Quaking Aspen suckers that are coming up in my lawn without hurting the trees or the grass?
- What are the differences and advantages or disadvantages of soil amendments? Specifically Perlite (expanded silicous rock), Vermiculite (expanded mica), Utelite (expanded shale).
- I live in salt lake city, and have very hard rocky soil. I would like to plant a few varieties of trees for shade and decor (like to enjoy them in my own lifetime)I realize I'll need to excavate for good soil and root ball. Any suggestions?
- I planted four Patmore Green Ash trees in my yard and they all have circular hole bite marks on all the leaves. I cannot see any insects on them. Do you have any idea what might be eating the leaves and how I can get rid of them?
- I just recently moved into a home that has these terrible "soda straw" type weeds that I can't get rid of. They pop apart and look like tall drinking straws. I have sprayed them with multiple rounds of poison (extra strength!) and dug them out by hand 2 or three times. They are coming back stronger than ever. What should I do?
- My petunias are horribly sticky - I assume thrips are in control although I have tried to keep them washed off (insecticidal soap) and sprayed with a systemic (orthonex). Is there anything else I might try? Would a dormant oil spray work, and if so when would I use it? Also, there are small worms that are probably chomping the blossoms. What would work to prevent or kill them? How do worms can get into my flower boxes, that are at least 6 feet off the ground?
- Can you tell me how to get rid of the Star of Israel that is in your lawn?
- The leaves on my snowball bush are withered and the flowers almost nonexistant. The neighboring lilac doesn't look to good either. What could be causing this problem.