should I worry....?

the leaves of my hibiscus are turning yellow....and still it is full new buds and it florishes.....

Looks like too much water to me. Since it's potted, you should make sure the moisture level is consistent, but not overwatered. If you can stick your finger into the soil and feel moisture, you shouldn't water. If the top inch or two is dry, you can add. Hibiscus loves water, but hates wet feet. I had a plant in the ground at the edge of my property line (zero-lot line) and my neighbor, who was getting a new roof, had removed her gutters. Well, since the water just poured off her roof and onto my plant, it started to look like that and would kind of wilt as if it were being water-deprived. Back off on the water regime a little and see if it improves.

Grant is correct about the watering. From the picture I don't see any real problem. Leaves will turn yellow and drop with the age of the leaf. If there were an overall yellowing of the leaves my first question is always, "What are you feeding it?" Tropical hibiscus require a different fertilizer from other blooming plants. Do NOT feed them fertilizers like SuperBloom, Miracle Grow or any fertilizer with a high middle number. The N-P-K for hibiscus should contain near a 2:1:3 ratio such as 10-5-15 or 12-4-18. Where phosphorus (the middle number) gives many blooming plants what they need for good blooming it is barely utilized by hibiscus. With little uptake of phosphorus it will build up in the soil and eventually lock-up the root system. This is more noticeable in potted hibiscus. If it happens in a pot, leaching the soil or repotting with fresh soil will correct it. The key nutrient for hibiscus blooming is potassium (the last number). If you can't find a good hibiscus specific fertilizer some tomato fertilizers have the proper ratio.

This message was edited Mar 27, 2010 3:21 PM

This message was edited Mar 27, 2010 3:23 PM

Thank you so much for your good advice.....I did use Miraclegrow....but when the leaves droop...it needs water..?

I will be more carefull...

Drooping can be caused by 2 things. Too little water or too much water. Hibiscus prefer a moist soil. If it's dry then water it. If the soil remains excessively wet (as opposed to moist) then root rot can take over. If root rot sets in there is little that can be done to save the plant. The only viable option is to prune way back, dig up the plant and gently wash the soil from the roots. Replant or pot in a well drained soil. There are treatments available to stop root rot (check with a local nurseryman for what's available - not the big box stores). Some of these treatments can be a bit expensive and above the cost of simply replacing the plant. Just don't replace it in the same bad soil.

Failed to mention that another option for feeding hibiscus is palm fertilizer.