I have a raspberry plant that has been doing quite well until it rained and...

Asked June 11, 2019, 9:01 PM EDT

I have a raspberry plant that has been doing quite well until it rained and flooded my pot and the plant has started to grow back but very slowly, i was wondering if i should trim it a certain way to help it grow better?

Oregon raspberries container gardening

1 Response

Here are some tips for your flooded raspberries:

  • It is likely the beneficial microorganisms and soil life that were living in your pot and keeping your plant healthy have drowned. At best case, their numbers are likely to have been greatly reduced. If this is the case, the potting mix or soil may smell ‘sour’ or anaerobic. Oxygen normally fills the gaps in between the soil crumb structure. All organisms and plants need air to live. When plant roots start to decay, you may notice this unpleasant smell.

Solutions to Restore your Soil and Plant Health

  • Ideally, remove any contaminated potting soil. Add equal parts of fresh compost, worm castings and if possible, vermiculite to retain minerals and aerate the potting mix. Try not to disturb the roots of the plant.
  • Remove any dead or dying shoots or foliage with clean secateurs. Pay attention to tool hygiene. Ensure you wash your tools in warm soapy water if they have been used on sick plants.
  • If the soil moisture measures above 80%, it is still too wet, so let it dry out before adding any more water. The ideal moisture level is between 40% and 70%, which allows some oxygen to stay in the soil. Water when the soil moisture drops to <30%.

There are some ways to save overwatered plants.

  • Changing the soil to a grittier mix with better drainage may help.
  • Check the drainage holes at repotting and ensure they are open.
  • Use containers that help evaporate excess moisture, such as terra cotta and unglazed containers.
  • Remove the plant from its growing medium and rinse the roots to get off any fungal spores that may be forming. Then dust the roots with a fungicide and repot.
  • Move your plant to a shady location, as plants in shade use less water and you can let it dry out a bit. After a few weeks, move it back to its preferred lighting level.

Sometimes you simply can’t save potted plants that are too wet. Container plants with too much water need to be treated as soon as possible, as the longer the situation continues, the less likely there is to be a full recovery.

Hope this helps!