Tuscan Blue Rosemary Has Brown Leaves And Is Dying

Filed Under: Herb Plants · Keywords: Tuscan Blue, Rosemary, Browning, Leaves, Dying · 3116 Views
Rosemary, Tuscan Blue, potted........just not thriving......see some clumping and dying brown......well drained, but SC humidity not the Calif. weather we're used to.......

Does get more water than CALIF.......

Should we move inside to A/C? drier....never water?

Second plant to be dying........first was in ground under trees and maybe clay/wet feet....less than foot tall after three months!!!! Not "fast growing"!!!

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Answer #1 · Gardenality.com's Answer · Hi David - I'm in zone 8a of Georgia and have the Tuscan Blue growing in my herb garden. It's performed very well over the past 5 years or so. It's in a raised bed and the clay soil was amended heavily with bag-type sandy top soil. Because Tuscan Blue is hardy to zone 10, I wouldn't think the heat or humidity would be the problem with your rosemary. We have the same heat and humidity here as in GA as in SC and I've had no problems.

This leads me to think that your potted rosemary might be suffering from a soil moisture problem...either too much or too little water? Even though rosemary likes well-drained soils and is considered to be a very drought tolerant plant, when growing in containers the soil moisture has to be checked more frequently, especially during summer. The soil should be kept lightly damp.

Tuscan Blue is for sure hardy in zones 8-10 and I've heard up to 7a. That being said, when growing in a pot in these zones the roots are exposed to air temperature. Not sure how long you've had the rosemary growing in the container, but it's possible the plant is suffering due to stress from being exposed to the colder air temps? You might consider bringing it indoors during the colder days of winter.

Regarding water. When planted in the ground, rosemary are exceptionally drought tolerant when established. In pots, the soil moisture will need to be checked more frequently and water provided when necessary. If the first rosemary you planted in the ground was in a site that had clay soil that retained too much moisture (especially during winter), this would definitely cause problems with the roots. I'd suggest planting rosemary in well drained raised beds or mounds in which the clay-base soil has been conditioned with bagged topsoil to improve drainage.

In any event, I'd suggest cutting the plant back or at least removing all the dead parts. I'd suggest this with any plant. If your Tuscan Blue doesn't make it, maybe try a different variety such as Salem, Athens Blue Spires, or Arp. I've had success in the past with all these.

Hope this info is helpful. Let me know if you have any further questions.


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Answer #2 · David Oyster's Answer · Thanks!!!! Suspect to much water......will re-pot in Cactus soil........we are VERY heavy "make your own pot" clay soil, so suspect first in the ground victim of wet feet.......

This pot does seem to stay wet to long although "commercial " potting soil.....)

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Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Your welcome. Commercial potting "soils" tend to be too heavy for some plants. On the other hand, professional or premium potting "mixes" are available that are much lighter weight and hold water much more evenly. A cactus mix should work fine. The brand of potting mix I often use is Jolly Gardener. It comes in a larger bag and is less expensive than cactus mixes. Metro Mix potting soils are another good brand used by many commercial growers who grow herbs and other herbaceous plants in containers. A layer of gravel can also be placed in the bottom of containers to improve drainage.

8 years ago ·
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Answer #3 · David Oyster's Answer · Thanks will try......)

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