Hero Image

Ask Us

Got Gardening Questions?

Volunteers for our Hotline are working via email to respond to your gardening questions. All responses to your questions will be conducted via email.

Email Us at mgbutte@ucanr.edu (preferred).

Call: 530-538-7201 (leave a message)

Help Us Help You

You never can tell what's at the root of the problem. Below are some questions we may ask when you contact us:

  • Name of plant
  • Age of plant
  • Soil type (loam, sandy, clay)
  • Current watering methods (drip, sprinkler, hand)
  • Frequency of watering
  • Sun exposure
  • Evidence of insects or other damage – check on both sides of leaves
  • Recent changes that may effect the plant (watering, fertilizing)

Samples and photos related to your question are strongly encouraged. Drop them by the office any time, or email them to: mgbutte@ucanr.edu

What’s Hot Now?

frost blanket
by Brent McGhie

How can I protect my citrus trees from frost damage?

Citrus trees benefit from being planted in a sheltered area. Healthy, well-irrigated trees are better able to endure freezing temperatures.  Keep the ground around citrus trees bare because bare, moist soil is better able to absorb and reradiate heat than soil covered by mulch or other ground covers. Young trees (one to three years old) can also be covered entirely, using a light material to trap heat being radiated by the ground. A frame or stakes should be used to minimize contact between the cover and leaves because ice may form where the cover touches any leaves. Sheets, burlap, or tarps are a better choice of cover material than plastic because plastic transfers more heat and if leaves come in contact with it they are more likely to freeze.  The cover should extend as close to the ground as possible and be removed the next morning after the temperature rises. 

For more information see:
Frost Protection for Citrus and Other Subtropicals
Avoiding Cold Damage to Citrus (pdf)


What's Hot Archive

2021 · 2020 · 2019 · 2018 · 2017 · 2016