Post a reply

Avatar for SoulReaver009
May 29, 2020 6:52 PM CST
Thread OP
Milpitas, CA
Is this anything to be concerned about?
It's not spotty as you can see. And they are not dark. They are like "wheat bread crust" brown. I don't know how else to describe the color. Or the shape. As you can see in the pics.

And the edges have a tan dried out part. Which I think is just "normal."

I noticed it on one of my rose bushes.

Thumb of 2020-05-30/SoulReaver009/20f182
Thumb of 2020-05-30/SoulReaver009/5f33bc
Thumb of 2020-05-30/SoulReaver009/0d5585
May 30, 2020 3:30 AM CST
Zone 9, Sunset Zone 9 (Zone 9b)
Could be a variety of different things. Could be heat, salt damage, fungal disease damage. Not knowing if you have been fertilizing lately, had rain, heat, etc., makes it difficult to diagnose. Also, some varieties just do this. Considering where you live, you have had rain, heat, etc., so it could be any of the above.

Here is info from University of Arizona on salt burn.

"Salt Burn Symptoms include the edges of the leaves turning brown. This common problem is caused by a buildup of salts in the soil and subsequently in the plant tissue. Salts can accumulate from inefficient watering practices or if an excessive amount of fertilizer is used. Symptoms typically are the browning of leaf margins of browning of the entire leaf (Fig. 7). Avoid this problem by periodically watering slowly and deeply to leach salts past the root zone. Also, carefully follow the instructions on fertilizer containers and do not over apply. ("If a little bit is good, then a lot must be better", does not hold true for fertilizer!) By applying the fertilizer in a 'split application', i.e. applying half the recommended amount in two applications timed about 2 weeks apart will minimize the potential for fertilizer 'burn'. Water thoroughly before and after fertilizing to help prevent burn. "
Avatar for SoulReaver009
May 30, 2020 11:57 AM CST
Thread OP
Milpitas, CA
Lol thank you, I think that's what it is. We haven't had rain in about a month. I haven't fertilized since beginning February.

I just read an article saying that watering with regular tap water is ok. So I gave them a deep watering with the hose. Between 1.5 - 2.5 gallons.

2-3 days later, this happens.

Wow you were spot on!

Thank you so much. I won't be watering with tap water anymore.

I knew it, too! But I just read an article saying that you don't have to worry about the chlorine in the water, that it actually helps keep the dirt clean, and fights mold and fungi buildup. And that the salt in tap water is negligible...

Maybe it's because I haven't used tap water since last year? So when I used it a couple of days ago, my plants really noticed the difference?? Idk
But I think I'm better off going back to the way I was watering before. Instead of harming my bushes further through trial and error.

Thanks again
Only the members of the Members group may reply to this thread.
Member Login:

( No account? Join now! )

Today's site banner is by mcash70 and is called "Hybrid nemesia"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.