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Yellow PlantsYour landscape plants could be trying to tell you something. Skip has the translation. |
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Transcript: Yellow Plants
In order for our plants to stay green and healthy,
they need good nutrition. Sometimes a nutrient is lacking or tied up in
the soil and the plant can’t get a hold of it.
You can often tell what the nutrient problem is by looking at what part
of the plant is showing the symptoms. For example, some nutrients are
mobile in the plant. You can steal it from an older leaf to supply new
growth. Nitrogen is that way, and so is magnesium, so you see the yellowing
on the older leaves first.
Other elements are immobile. Iron is an example of that. With iron deficiency,
the new leaves show the yellowing while the old leaves remain green. Sometimes
you’ll see green veins with yellowing in between the veins.
Iron deficiency is sometimes due to a lack of iron in the soil, but often
due to the fact that iron is just tied up and the plant can’t get it.
High phosphorous and high ph levels can cause this, so in Central and
West Texas, we see a lot of iron deficiency. The easiest way to fix it
is with an iron chelate supplement.
If you’re wondering what’s causing deficiency on your plants, take a sample
of your plant, showing old and new growth, to your local county Extension
office and let them take a look at it. They can usually determine what
the cause is; prescribe the right fertilizer and the right rate to get
it green again.
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Last Updated:
July 6, 2006