Q&A for How to Prune Oleander

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  • Question
    Can I prune dead wood off my dwarf oleander? When can I do it?
    Lauren Kurtz
    Professional Gardener
    Lauren Kurtz is a Naturalist and Horticultural Specialist. Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014.
    Professional Gardener
    Expert Answer
    Yes. You should prune all of the dead wood off of your oleander. Do this regularly, throughout year as needed.
  • Question
    How do I encourage bushier growth on my oleander?
    Lauren Kurtz
    Professional Gardener
    Lauren Kurtz is a Naturalist and Horticultural Specialist. Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014.
    Professional Gardener
    Expert Answer
    If you have an old oleander, then you can heavily prune select branches about half way down. This will encourage cut branches to split off and grow more branches. Young oleanders can be cut to the ground in the fall. This will encourage bushier growth in the spring.
  • Question
    I want to know what I should do with my oleander. It is March, and I have done nothing to it. It bloomed and the blooms look dead. Should I cut them off?
    Ninox
    Top Answerer
    You can cut off the old bloom, but make sure you don't cut the branch, otherwise your oleander won't bloom next year.
  • Question
    Will oleander plants survive a freeze?
    Ninox
    Top Answerer
    It depends on the cultivar. Cultivar like Atlas, Italia, Eole, Cheyenne and Navajo can survive until -9°C to -12°C but others such as Luteum Plenum, Alsace or Rosario don't tolerate freeze well.
  • Question
    How do I prune a tall, floppy oleander?
    Ninox
    Top Answerer
    You can cut the half of the bush height-wise. You can also cut all the branches that curve to the ground.
  • Question
    Can I trim my oleander in summer in Phoenix?
    Community Answer
    I would not prune in the heat of the summer. Wait until September when it cools down.
  • Question
    Can I prune oleander at any time?
    Ninox
    Top Answerer
    You can remove dead branches at any time, but if you want to cut living parts, you have to wait until late summer or early fall.
  • Question
    If my oleander's branches are all brown, does that mean it died over the winter, or will it come back? I didn't prune it in the fall.
    Ninox
    Top Answerer
    Your oleander may have suffered from freeze. Wait until spring. If it doesn't make new leaves, it's dead.
  • Question
    My bush has never bloomed and now (Feb) the leaves are dead looking. Should I prune it now?
    Ninox
    Top Answerer
    No, wait until late spring, and some new branches and leaves should appear on dead looking parts. If this doesn't happen, your Oleander is dead.
  • Question
    Should I not prune an oleander in February?
    Ninox
    Top Answerer
    No, you better wait until the first leaves appear to spot dead parts. You can cut, but bigger pruning can only be done in late summer or early fall.
  • Question
    I transplanted my oleander. It looked good for about a week, then the leaves started to wilt. What should I do?
    Community Answer
    This is normal when replanting anything. Give it some time. Be sure to have fertilizer in the new spot.
  • Question
    If my oleander is growing more branches at the bottom, should I cut them off or leave them?
    Community Answer
    This depends on whether you want a bushier plant or more of a tree-like plant. If you want more of a tree look, cut the thinner and more curved stems that are at the bottom. Try to keep the straightest and thicker stem so that it is more of a trunk for your oleander.
  • Question
    Can I prune oleander to encourage new growth?
    Community Answer
    Yes, but gentle pruning can be done during its growing season; however, any heavy or multiple prunings should be done only after the growing season is over, typically very late summer and early fall.
  • Question
    Can I prune my oleander a lot if it hasn't been pruned for a long time?
    Community Answer
    You can do a ''hard pruning'' but it is best if you do it when the weather is much cooler. Avoid any hard pruning during the growing season. That could result in your plant going into shock and dying off.
  • Question
    What do I do if my oleander leaves are going yellow and dropping off?
    Community Answer
    All of the leaves, or just some? Yellowing leaves can be a sign of over or under watering, or root rot as a consequence of too much water. You could try transplanting your oleander into new soil; making sure there is sufficient drainage, trim back dead and brown roots, and use a good root starter fertilizer such as miracle growth with a high nitrogen rate; the first number in a fertilizer rate (n-p-k).
  • Question
    My oleander hedge is seriously overgrown, it's 12' wide. Can I prune it back to 2' wide and still have a screen?
    Community Answer
    Probably not. 2 feet wide in your overgrown shrub will only leave thick branches, like the trunk of trees and probably not enough leaves to screen effectively. You have 3 choices. Cut 2 feet off each side each year to slowly reshape it over a few years. Or, cut it almost to the ground an keep cutting off sprouts that are farther out than 2 feet and hope it survives. Or, take it out and plant something that matures at 2 feet wide.
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