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Southwest Yard and Garden

This column comes through the Grant County Extension Service out of New Mexico State University.

rust on hollyhock eileen r. las cruces 7 11 19Undersides of these hollyhock leaves are covered with rust pustules. Photo credits Eileen R.Question: What’s causing this rash of dark brown fuzzy spots on the undersides of my hollyhock leaves, and is it killing my plants?

- Eileen R., Las Cruces

swyg1These two branches from the same peach tree at the NMSU Agricultural Science Center at Los Lunas on May 29, 2-18 had noticeably different peach sizes. Photo credit M. ThompsonQuestion: My peach tree branches are hanging lower as the peaches get bigger. Is it too late to thin the fruit?

-     Savannah M., Alamogordo, NM

img 4521Bernalillo County Cooperative Extension Agriculture Agent John Garlisch leads a “Summer Raised Bed Gardening” workshop in Albuquerque the first week of June. Photo credit M. Thompson.Questions: What time of day should I water my raised bed garden? Why is water pooling on the soil surface? When is the right time to pull garlic?

img 4496Bernalillo County Cooperative Extension Agriculture Agent John Garlisch leads a “Summer Raised Bed Gardening” workshop in Albuquerque the first week of June. Photo credit M. Thompson.Questions: Why do people build raised beds? Why not just plant directly in the soil? What’s the recommended height for a raised garden bed? Am I ruining everything by overcrowding my poor plants? What if my raised bed was ready, but I was too late to plant?

Question: I suspect that curly top virus caused half of my tomatoes to wilt and die last year before July, so this year I’ve covered each cage with shade cloth to keep the beet leafhopper out. If wrapping each plant keeps insects out, how do the flowers get pollinated?

- Mary T., Belen, NM

img 4225Extrafloral nectaries on the petioles of these cherry tree leaves look like rosy eggs. Photo credit M. Thompson.

Question: My nectarine and peach trees have hard pale green ball things near the base of leaves. What are they and are they harmful to my trees?

spittlebugsSpittlebugs are hiding inside white clumps of cottony foam on this autumn sage plant in Los Lunas. Photo credit M. Thompson.

Question: What are these pea-sized globs of white foam all over the stems of my rosemary plant? Should I be concerned?

Leslie H., Belen, NM

wooly apple aphid flocculence de baca county aspen achenWhite masses found on the edges of old pruning cuts on this apple tree may be evidence of woolly apple aphid populations. (Photo credit A. Achen)

Question: What is causing this white webbing that looks like it’s oozing from old pruning cuts in apple trees?

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