Monday, March 3, 2008

Please Note: Linda Yang Lecture Rescheduled

Dear HSNY members, supporters, and friends,

For those of you that have received the HSNY program mailing for March and April, I must inform you of a last minute date change. Due to a terrible cold we have had to reschedule Linda Yang's slide show and lecture, "Planning Your City Garden". Linda's lecture was originally set for this Wednesday, March 5th, 2008, and has been rescheduled for Thursday, March 27th, 2008, from 6:00 - 7:30pm.

We hope very much to see you on the 27th for Linda's slide show and lecture. Sorry for any inconvenience this may have caused.

If you are interested in learning more about The Horticultural Society of New York as a horticultural resource and provider of unique and specialized community outreach, please click here. If you are interested in becoming an HSNY member to help support our efforts city- and nation-wide, please click here. Thank you.

Repotting a Jade


Question:

I found your blog on line and enjoyed reading all the Q & A’s. My question is regarding my jade plant. I bought it at the local Target store about three years ago. We have moved, and the last year, it has been loving its new home, in front of an east facing window. I try to remember to turn it, due to the branches “growing towards the sun”. It is getting a little leggy and I would like to know how to prune it to stimulate additional growth on the stalks. I have pinched of the ends before, but nothing major.

I believe it is root bound, how do you know when to repot? What type of potting medium do you suggest?

When I do get the nerve to do major pruning, if needed, what is the best way to propagate the cuttings? I have read so many different things on line: …use a leaf, …use a cutting, ….put it in water right away, …do not water for weeks, . . .let cutting air dry. . . so confused.

Answer:
Thanks for writing and including the photos. Your jade (Crassula argentea) does look very happy, and yes, I would definitely say it needs to be re-potted. If you find roots coming out of the bottom of the container or if the plant looks very restricted in its present pot, then it is pretty safe to say that re-potting would be a good idea. Some houseplants can enjoy being slightly pot-bound, but I wouldn’t say that jade necessarily fit into this category. As far as the re-potting, search for a container that is only 2” or 3” larger in diameter than the yellow pot it is presently in. Make sure it has proper drainage and since the plant has done so well in the yellow pot you might choose to use another glazed pot that will help retain some more moisture than terra cotta alone. As for the soil, I would use a mix that is free draining and not too moisture retentive. I think it’s Miracle-Gro that makes a Cactus & Succulent mix that I have used many times over for various plants, including jades, both here in the office and at home. It is a potting mix that has a little grit to it and is not too weighed down with organics which is good because you always want to avoid the potential for root rot. Best time to repot is late winter or early spring as the days get longer and the plants become more active, so now is the perfect time.

As for the propagating, you can try either leaf cuttings for stem cuttings. When you repot you will most likely lose a few leaves so you might as well pot them up separately or in the periphery of the new container. If you take stem cuttings, make sure you use a very sharp and sterile knife. Cut healthy looking shoots so that you have pieces that are 4” or 5” inches tall. Try to make the cut right under a node (the junction where a leaf or stem might have emerged from the stem you are cutting). Pull off any extra leaves so that you are only left with 3 leaves remaining on your cuttings. Let the cuttings sit and callus for a few days. Then, after a few days of callusing, pot the cuttings up in the free draining soil you bought for the re-potting. If you want, you can get a rooting hormone (such as Root-tone) and apply a very light dusting of it to the bottom of the cuttings before potting them up. When potting the cuttings, remember that you will want to use your finger to prepare the hole for the cutting so that the rooting hormone you have applied doesn’t get wiped right off the base of the cuttings once inserted in the soil. Make sure the soil you pot the cutting in is moist, but definitely not sopping wet. Pack the soil in around the cutting so it is held in place, and if you have to bury the cutting an inch or two down, so be it. In order for either of the cuttings to root most efficiently, you want to keep the soil slightly moist at all times and warm, about 74 or 75 degrees. It looks like that little shelf that gets hit with a lot of sun might be a perfect spot to situate your cuttings. Give them time, check every month or so to check on root development, and hopefully they will take and in time become plants of their own.

Sunday, March 2, 2008

Please Note: Change of Event Date







Hello friends and supporters, I have an important announcement to share with you.

If you have received the March/April HSNY Mailer and/or email that went out last week highlighting the various events and offerings of The Horticultural Society of New York, I must let you know that there has been a date change. You will see on your HSNY events calendar that the opening for Ricci Albenda's art exhibit in the HSNY Gallery is listed for March 20th, 2008. Please note: this date is incorrect!

The opening for Ricci Albenda's art exhibit, 26 DEVOE, will take place at The Horticultural Society of New York's Gallery at 148 West 37th Street, 13th Floor, on Friday, March 21st, 2008, from 6:00 - 8:30pm.

If you are an HSNY member you will soon receive an invitation in the mail with all of the correct information. We apologize for the inconvenience, and we hope very much to see you on the evening of the 21st. If you are not an HSNY member but want to learn more about who we are as a horticultural resource and provider of community outreach, click here. To become a member of HSNY to help support our efforts and offerings both city and nation-wide, click here. Thank you.

Pictures of Bamboo Flowers?

Question:
Good morning. I am looking for a photograph of the bamboo flower? Can you direct me on where I might find one?

Answer:
Sorry to answer your question with a question, but is an internet image acceptable or do you need it in print?

The flowers of many bamboo species (botanically known as Bambusa) are not very ornamental. Often they might look more like a grain than a large flower with colorful petals, but perhaps you already know that. I did a simple internet search and was able to find a few images. It might help to perform a search using the botanical name, Bambusa, as common names can often give you too many erroneous pictures.

Of course, if you need to find bamboo flowers in print, then come to the HSNY Library on West 37th Street. I asked Katherine Powis, HSNY Libarian, if she had any good pictures to share and she found these plates in a book entitled The Gardener's Guide to Growing Temperate Bamboos by Michael Bell (Timber Press, 2000):
(click on the images to see the scans full size)