Tree peony: Diseases and Remedies (3-minute Read)

NOTE: Tree peony may be referred to as Paeonia suffruticosa in this article, in fact, those are the same plants, Paeonia suffruticosa is the botanical name for Tree peony.

In the late spring and early summer, tree peonies bloom with big, beautiful peonies. The flowers are the same as those of their cousin, the herbaceous perennial, Paeonia lactiflora. If you love peonies and want a plant that has aboveground structure throughout the year, tree peonies might be the perfect choice.

Why does my Paeonia suffruticosa roots have rot?

Root rot on your Tree peony (Paeonia suffruticosa) can be dangerous if left untreated. In order to keep your plant alive, we strongly suggest that you follow our advice if the signs start to show: blackened and mushy roots.
Tree

Why does my Tree peony have gray mold spots?

Gray mold spots are a specific fungus that regularly harms flowers and spreads swiftly. If you notice any brown (or gray) spots, this fungus is probably to cause. You risk your plant dying if you ignore these warning indications.

Our Solution

When you understand the root of the issue, the solution makes perfect sense. The majority of the time, it is caused by the Paeonia suffruticosa being overwatered. We urge you to cut off the infected roots and leaves, remove the affected sections of the plant, and then repot your plant in a fresh container with sterile potting soil.

Why does my Tree peony have leaf spots?

Leaf If your plants exhibit symptoms like rapid color changes in the leaves or leaves that wilt or droop, we give you all the information you need to recognize them and rescue your plants. For owners of Tree peony, this kind of illness is among the most distressing.

Why are my Tree peony leaves turning yellow?

This is probably the most common problem in the gardening world, yellowing leaves. There are 2 main reasons for this phenomenon, overwatering, or a lack of nutrients.

Reduce your watering frequency when you fear your plants are being overwatered, and follow these steps to determine whether they may be lacking in nutrients:

Each deficiency produces a different yellowing on the Paeonia suffruticosa in question, here’s how to spot them:

  • The first symptom of a magnesium deficiency is yellow patches between leaf veins on elder leaves. The leaf’s core turns yellow while the veins stay green. The edges of the leaf yellow last.
  • Yellowing between leaf veins is another sign of iron shortage, but young leaves on plant tops and branch tips are initially affected.
  • Sulfur shortage first affects the youngest leaves, turning them entirely yellow.
  • Insufficient potassium causes the leaf edges to turn brilliant yellow while the interior of the leaf stays green. Older leaves show the symptoms initially, and the leaf edges quickly darken.
  • A broad yellowing indicates a nitrogen deficiency. Yellowing starts with older, inner leaves. Yellowing spreads as it advances, eventually touching new leaves as well.

Our Solution

You only need to respond to the signs mentioned above. A gardening store expert will be able to provide you advice on how to purchase a specific soil to treat a potassium or nitrogen deficiency. Additionally, you can reduce how often you water your plants.

Is my Tree peony sunburned?

You can easily tell if your Tree peony (your Paeonia suffruticosa) has a sunburn. In this case, your plant will change color, starting to turn yellow or white, much like it does on us.

Sunburned

As we saw above, the leaves of your Tree peony can also change color if it receives too much water or insufficient light.

However, there is a way to tell if it is sunburn; look at the bottom of the yellow leaves, the ones that have a shaded area closer to the root, if this area stays greener, it is probably sunburned, not something else.

Why are my Tree peony leaves turning brown?

Most of the time, leaves of a Tree peony that turn brown is a sign that your plant has been sunburned, it has probably been exposed to too much direct sunlight. Don’t panic, your plant probably won’t die from this, but its growth will take a hit.

Should I leave my Paeonia suffruticosa in direct sunlight?

No! If your Paeonia suffruticosa (or Tree peony) has the symptoms described above, don’t leave it in direct sunlight, that’s the reason why your Tree peony is in such a state!

Our Solution

The remedy, as said in the paragraph above, is simple: just move your plant’s Tree peony out of direct sunlight. Your plant should swiftly re-grow with this strategy and appropriate watering.

Why are my Paeonia suffruticosa leaves drooping or wilting ?

In most cases, this happens when your Paeonia suffruticosa lacks water. This is especially the case for large plants, naturally they need more water than others.

Drooping

An easy way to know if your Paeonia suffruticosa is lacking water is to under-weigh its pot, if it looks light, it means that the soil and the roots are probably quite dry, and therefore need water!

Our Solution

In order to ensure that the roots of your plant receive the water’s benefits, you must first moisten the soil in the container if it is absolutely dry. One common error is to immediately drown the Tree peony after a dry period in the belief that it requires a lot of water.

This is true, but the easiest way to end it is to give too much water at once. Instead, you should water the soil properly, returning to a peaceful watering rhythm.

Caring Tips for Paeonia suffruticosa

Water Occasionally

Your plant needs water to survive, but it’s crucial to balance the amount and timing of watering. As we previously mentioned, overwatering could be catastrophic for your Paeonia suffruticosa.

You can tell if your plant needs water by touching the soil; if it still feels damp, it’s usually preferable to wait a few more days.

Always keep temperatures stable

It’s also a good idea to keep your Paeonia suffruticosa at a constant temperature, especially if it’s kept indoors. In general, at GreenShack, we suggest booking a temperature between 65 and 85 degrees F. Of course, keep your Paeonia suffruticosa away from radiators, air conditioners, and other sources of hot or cold air.

Keep your Tree peony Dust-Free

This one concerns indoor plants, just like on your furniture, dust is also deposited on the leaves of your indoor plants, the problem is that it can prevent them from receiving the necessary light, this would slow down (or even stop) the photosynthesis process, and eventually, they would lose their colors.

This would be a true journey into hell for your Tree peony and would also satisfy the pests.

To remove the dust, gently rub the plant’s leaves with a microfiber cloth. Dust can be removed more easily with a damp cloth, but stay away from corrosive substances like rubbing alcohol!

Keep drainage in mind

If you tend to overwater, you need to pay attention to your drainage, and we advise choosing a saucer and a pot with drainage holes if they are not already there.

If your pots don’t already have holes in them, you can add volcanic rocks (or any other pebbles with holes) to the bottom of your pot in the meantime. This will assist in creating a channel and keep the water from pooling there for an extended period of time, protecting the roots from decay.