With only minimal care, petunias provide color from spring until the first frost of autumn. However, you may notice petunia leaves turning yellow if the plant becomes infected by certain pathogens or isn't getting the care it needs. Petunias are usually grown as annuals, but they grow year-round in U. Department of Agriculture plant hardiness zones 10 through 11, advises Missouri Botanical Garden. Petunias are heavy bloomers that require regular fertilization throughout the growing season.
Deficiencies in nutrients, including nitrogen, potassium, magnesium, sulfur, iron and manganese are often the reason when petunias turn yellow.
Feed petunias a water-soluble fertilizer with a ratio such as every two weeks. Mix the fertilizer at a rate of 1 tablespoon in 1 gallon of water, and then use the solution in place of regular watering. With a higher soil pH, petunias begin to suffer from an iron deficiency. You might try alternating your fertilizing keeping with reduced strengths of course with a fertilizer rich in iron. One possibility would be Miracle-Gro for acid loving plants.
Art33, I purchasesd the Miracle-Gro for acid loving plants. I'm not sure what to use and don't want to do more damage. Also, should they receive the fertilizer dose at every watering or every other watering? Well, I don't know if petunias can really be classified as "acid loving" or not. However, I do know that they are very sensitive to a high pH, which will cause the leaves to turn yellow. Regarding using reduced fertilizer dosages for our seedlings, we often see suggestions that recommend one fourth strength.
The problem is that any recommended percentage may be weak for one fertilizer and still very strong for another. And, of course, one fourth strength probably isn't going to be right for all plants. If you're using Miracle-Gro Miracid you might try one fourth strength, at least at first to green up those leaves. I'd use it with every watering but not more than once a week. Later on you could go back to using your regular fertilizer or maybe use the Miracid once a month just to make sure the petunias are not too low on iron.
Keep in mind that I'm no expert and this is simply what I would probably try. Good luck with the petunias, hope they turn out beautiful! One other thing, I forgot to mention The leaves of seedlings can be easily burned.
Hi, Yellow leaves usually means they need acid, also, petunias love heat. A cool envionment will cause rot and wilting. Acid will give them a dark green strong leaf. Indem Sie weiterhin auf der Website surfen bzw. Mehr erfahren. Ultimate Lighting Sale. Bathroom Vanity Sale.
Bestselling Chandeliers and Pendants. Sign In. Join as a Pro. Houzz TV. Houzz Research. Shop Featured Holiday Categories. Home Decor. Answer from NGA August 24, You must be signed in before you can post questions or answers.
Click here to join! Member Login: Username or email:. Pinterest Facebook Youtube Twitter Instagram. My potted petunias have been beautiful all summer until recently when the leaves started to turn yellow and die from the bottom up.
While the leaves were turning yellow, the plants were still flowering nicely. Petunias are a heavy blooming plant and as such need to be fertilized and fed regularly.
Some of the more common reasons for a nutrient deficiency with petunias is that the roots are too compacted to get adequate nutrients and water to the plant or that they are not being fertilized often enough or with the right fertilizer.
When you plant petunias, it is a good idea to shake the roots loose before you plant them to ensure that they are not all bunched together. Sometimes they will be twisted tightly together. In this case, you will need a sterilized set of shears to gently clip and untwist them before planting them. If they are bunched together, the plant will not be able to feed itself properly, and consequently, the leaves will turn yellow and the plant could die.
Petunias need to be fertilized with a balanced fertilizer every 2 to 3 weeks. I start fertilizing mine in early July and continue until the growing season is complete.
Container grown petunias will do well with a time-release fertilizer but spreading ones can need to be fertilized more often. Yes, they can. Unfortunately, the symptoms of over-fertilizing are the same as with under fertilizing. The leaves turn yellow and wilt. Water the petunias deeply, soaking the soil down to the first 2 or 3 inches.
0コメント