YIN YANG TIMBER BAMBOO Bambusa emeiensis viridiflavus

Ralph recently thinned out one of our favorite clumping bamboos, Yin Yang Timber.  This 2-year-old line of four plants started out with a single cane from 3-gal containers when they were first planted.  Now, 2 years later, the four clumps have grown together into a solid wall of green.  A little thinning shows off the beautiful canes. 

Every year, the new shoots that appear during the warm summer months are larger diameter and taller than previous year's growth.  In larger-cane bamboos like Yin Yang, we like the way it looks if the smaller, more original canes are removed in order to showcase the more spectacular looking larger diameter new growth. 


The poles that were removed (shown in the bottom left image) are straight and can be used for building or craft projects.

Should bamboo watering schedule change with the seasons?

A customer from Winter Park, FL wrote to ask about winter watering needs for bamboo:

Now that winter is still with us, yet changing into something like Spring over the next few days, should we adjust our winter watering schedule? We have restrictions at this time of year: once a week is the city limit. Yet I could go out and give each bamboo clump, say, a gallon or two a day if you advised. Most of the bambusa chungii still have green leaves, but on a number of these leaves the tips are brown. I'm thinking that is a seasonal thing, but maybe you will say more water is needed. I'm also planning to put Black Kow around each clump later this week.

My response:
Soil conditions, fertilizer and water are the 3 key ingredients needed to make large, healthy bamboo plants.  

Clumping bamboos send up new shoots during the warm months and those shoots will be a larger diameter and taller if they are growing in rich, well-irrigated soil.  Adding compost, manure, grass clippings or any other organic matter as a top dressing around existing plants is always beneficial in any season.  As it rains or when the bamboos are watered, the nutrients from the top dressing leaches into the subsoil to be absorbed by the roots.  

If water restrictions limits watering to once a week any additional hand watering will help.  The more you water, the sooner new shoots will emerge.  But don't worry if you can't do that.  Bamboos can handle minimal watering, they just grow faster and get bigger sooner if they are more frequently irrigated.  

The browning on the tips of the Bambusa chungii (Blue Timber) is, as you suspected, just a natural part of the winter season.  Bamboo leaves die and fall to the ground all year long but it seems to happen more so in the winter.  The brown tips are not a sign that your plants are lacking in water or are nutrient deficient.  It just signals a transition time from one season to the next.  


Keep your eyes open for new shoots on the Bambusa chungii.  Just within the last few days I've noticed new shoots emerge on the Blue Timber bamboos that we planted last year.

Osprey enjoys the view from Beautiful Bamboo

Ralph and I just happened to be in the right place at the right time to see this osprey fly in and land on a clump of mature Oldhamii bamboo. He's perched on the thin tip of a cane that lost its leaves in the recent cold spell. Ralph and I might object to a few less leaves on the stand of bamboo but the osprey doesn't mind. He (or she?) finds the leafless cane perfectly suited for his sharp talons to clutch while he surveys the landscape. The clump of oldhammi (Giant Timber) is right next to the lake, an ideal setting for all sorts of predatory fish-eating birds including ospreys.

Is it normal for bamboo leaves to turn brown?

A customer who bought bamboo from us before the recent cold snap wrote to ask: 

Is it normal for the bamboo to brown in the winter?  All but the Golden Hedge now have brown leaves, following some rather bitterly cold nights we had last week and the week before.  The stalks still look basically the same.

 

Just wanted to see if something’s gone wrong.  I did avoid watering before the coldest nights for fear of freezing the roots, but otherwise they should have received plentiful water.

 

I replied:

You haven't done anything wrong.  The unusually cold weather has "burned" the leaves on many of the bamboos.  Those leaves will be falling off in the coming weeks and new leaves will form to take their place.  For information on which bamboos are most vulnerable to winter temperatures, please click on this post. 

Will the cold snap kill my bamboos?

Dwarf Buddha Belly leaves are beginning to die after being nipped by last week's freezing temperatures

Many people are worried about their bamboos.  People have been calling to ask what they should do to protect their bamboos during tonight's expected freeze.  Fortunately, most of the bamboos are going to be fine even if they are not protected at all.  All the running bamboos and most of the clumping bamboos can handle chilly weather - even when it dips into the mid to high 20s.  Certain ones are vulnerable but even those will rebound when the weather warms back up.  It is important to remember that even if the cold weather kills the above ground portions of the plant, it won't kill the roots.  The roots will remain viable and will send up new shoots again in the summer.

Here's a list of which plants are vulnerable:  all the Textilis bamboos like Emerald and Graceful are extremely hardy and won't be damaged unless temperatures dip into the mid to low teens.  That's also true for all the Multiplex bamboos like Golden Hedge, Green Hedge and Golden Goddess and also for Buddha Belly (Bambusa ventricosa).  Almost as hardy are Blue Timber, Baby Blue, Seabreeze and Yin Yang - those bamboos might suffer some leaf damage when temperatures dip into the low 20s. 

The ones to be concerned about in the current freeze are Dwarf Buddha, Hawaiian Gold, Angel Mist and Black bamboo.  To a slightly lesser degree, Ladyfinger, Asian Lemon, Giant Timber and Sunburst are also vulnerable.