DIGGIN’ IN
Trumpet vines can sport yellow blooms
Plus tips on hoya care
Q: In the neighborhood I live in, you can see a vining shrub trailing up a trellis that has what you call good green foliage and wears the biggest bright yellow flowers I’ve ever seen. The plant itself reminds me of the trumpet vine, but again, the flowers are yellow. Is there a yellow-blooming trumpet vine? — M.N., Albuquerque
A: There is!
The “Sunset Western Garden Book” lists it under Campsis radicans, saying that it is “a rare yellow-flowered variety, ‘Flava.’”
I did a quick internet search for “Flava” and found several sites offering it, so maybe it’s not as rare as it used to be. But in every plant description there were cautions that it is a rapid grower and best if trained to a fence or trellis.
Another thing I learned is that the Campsis family is a plant that doesn’t require a lot of nitrogen supplementation in its diet. They’ll appreciate more of a fertilizer that feeds blooming plants. In other words, more phosphorus and potassium in the fertilizer will keep them growing their best. So be sure to not overfeed with a lot of nitrogen.
Everything I read said yes to lots of sun, but I will caution against radiant heat if the site you choose is on a sunny south- or southwestern-facing wall. That might be too much. Nowadays it’s going to get more and more difficult to grow on that sort of site.
So yes, there is a yellow blooming trumpet vine — Campsis radicans “Flava.” If you are looking for mid- to late-season color, this might be a choice. I have never seen one available locally, but then again, I was never looking for one.
Hope this helps!
Q: On Carlisle Boulevard, headed south from Montgomery, there are a bunch of blooming shrubs growing mainly in the medians. I’ve not stopped to check them out, but boy howdy, they are blooming like gangbusters right now. Some of the shrubs are wearing white flowers, some are a happy red color, and then there are some that are the deepest red I’ve ever noticed on a plant. Do you have any thoughts as to what these shrubs might be? — C.T., Albuquerque
A: From your description and the time of year it is, I’m going to guess they are crepe myrtle.
The crepe myrtle likes to bloom when it’s hot, so that’s what I’m thinking they are. If I get in that part of town and traffic permits, I’ll check them out closer.
There used to be a long, long stand of crepe myrtle growing along Menaul Boulevard but we had a truly brutally cold January several years back that caused a lot of them to die. The color offered along that stretch when they were in bloom was a marvel.
You could probably find selections available now at our nurseries, but I will caution you that planting in this heat will require you to be more vigilant with the care of not only the plant life but yourself also.
Q: We have a hoya houseplant that we have had for several years. We’ve never repotted it and want to know if now would be an OK time to do that chore. It’s in a 10-inch-wide by 6- to 8-inch-deep pot. Should we move it to a bigger pot? It looks cramped to us. — H.H., Albuquerque
A: First, no! Do not move it to a larger pot. Hoya plants prefer to live potbound.
Given too much room with a bigger pot, the plant would aim to fill that space with roots while not tending to its green growth as it should. No to a bigger pot.
When doing this chore, just aim to remove and knock off as much of the old soil as possible without damaging the roots. When choosing its fresh potting soil, you might even consider spooning in some clean sand to keep the new potting soil looser and airier.
Offering the hoya new soil will be the best thing you can do for it, but do aim to get this project completed soon because we’re past the summer solstice, and even though it doesn’t feel like it yet, the daylight is shortening as we head to autumn.
Happy Diggin’ In!
Tracey Fitzgibbon is a certified nurseryman. Send garden-related questions to Diggin’ In, ϼ, 7777 Jefferson NE, Albuquerque, N.M. 87109, or to features@abqjournal.com.