Phyllostachys Bissetii Leaves

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Author Message   Giraffeman  Posted on Tuesday, October 24, 2006 - 05:40 am:    Hello I recently bought a Phyllostachys Bissetii and have kept it in a container. At first it was doing really well and putting up lots more culms, however, now it's having many leaves turn yellow and not loooking as good. Does anyone know why this may be? It's been in the same position since I bought it 3 months ago. Thanks. Giraffeman - London, Zone "8 (?)"   Gardenfiend  My Weather Posted on Tuesday, October 24, 2006 - 12:04 pm:    I've had this bamboo for over 20 years, but growing in the garden, not in a pot. It is normal for it not to be putting out more culms this time of year. But it definitely isn't normal for it to have many yellow leaves. I can only offer a few guesses: too dry? pot too small? Possibly too much sun for too long. Mine does well with little sun but rather a lot of moisture. Gardenfiend - Germany, Zone "7a"   Cactus_joe  Posted on Friday, October 27, 2006 - 01:31 am:    There are two common reasons why a container bamboo's leaves turn yellow: 1. The first has to do with watering - either too little or too much. Is your bamboo pot bound? Find out by lifting the root ball off the container and see how crowded the roots and rhizomes are. In reality, if it is root bound, you will have a hard time separating the root ball from the container. A root bound bamboo dries out very quickly and needs to be repotted. Is there adequate drainage? Again, lifting the rootball out will allow you to inspect for tell tale signs of sogginess at the bottom of the root ball. 2. Because bamboos are thirsty plants, we tend to water more often. The result is that nutrients will eventually be depleted as they are washed out in the leachate. In addition to providing the usual fertiliser, make sure that it is getting enough micronutrients, in particular iron. I apply a solution of iron chelate to our container grown bamboos about once a month. Are you in the northern hemisphere? Most bamboos are evergreens, but come spring, the previous season's leaves will turn yellow and new leaves emerge. If you are gardening in the southern hemisphere, yellowing at this time of the year may be heralding the natural spring leaf drop. Cactus_joe

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