You’ve been granted free access to this subscribers only article.
Use seaweed extract to prevent spider mites
Q. Why does seaweed extract help control spider mites on our tomatoes? Or is it just another hollow claim by organic-control advocates?
A. I researched the topic a few years ago. There were several theories. Some sources expressed the idea that the seaweed extract toughened the cells on the leaves enough to resist easy penetration by spider mites. If I remember right, however, the seaweed extract had small quantities of a chemical that reduced spider mite breeding success. Google “seaweed extract and spider mites” to verify my memory.
Q. What happens if we plant tomatoes now?
A. It is generally too late to expect the plants to bloom and mature tomatoes before cold weather arrives.
Q. The acorns are falling in my neighborhood. Can I just plant them in a container and have them grow a new tree?
A. Yes, as long as the acorn meat is intact, it will produce a tree. Put the acorns in a bucket of water. The acorns that sink have a full nut; plant them. Red oak acorns spend the first fall growing roots. A stem only emerges from the soil the second year. White oak and live oak acorns may sprout in the fall.
Q. Is it too late to plant Bermuda grass seed for the year?
A. Yes, the generally accepted deadline is Sept. 30. After that, the soil gets too cool for fall germination and growth. Wait until May 1 to plant Bermuda grass seed.
Q. What cool-weather annuals can we plant in the shade this winter? My caladiums are declining in the cool weather. I would expect the caladiums to perk up after declining in the hot weather.
A. Caladiums don’t like cold weather, but 65ºF at night and 85ºF in the day suits them fine. Use cyclamen and primula for winter color. Wait to plant them in late October or even November.
Q. Is it okay to plant carrot seed now? What else can we plant?
A. Plant lettuce, radish, turnip, rutabaga, and beet seed now. It is also time for broccoli, cauliflower, cabbage, Chinese greens, Brussels sprouts, Swiss chard, and mustard transplants.
Calvin Finch is a horticulturist and the director of the Water Conservation and Technology Center at Texas A&M-San Antonio. Hear him on “Gardening South Texas” on KLUP 930 AM radio Saturdays noon to 2 p.m., and 1-3 p.m. Sundays. Or, email him at firstname.lastname@example.org.
Your Opinions and Comments
Be the first to comment on this story!
You must be logged in to post a comment.
Agriculture Today Archives
County committee nomination period begins (June 22, 2016)
Hartmann takes the steer by the horns to win state championship (June 22, 2016)
La Vernia FFA wraps up school year with honors, scholarships (June 22, 2016)
Livestock Market Reports (June 22, 2016)
Root rot knocks out roses (June 22, 2016)
TDA Market Recap (June 22, 2016)
Texas Hay Report (June 22, 2016)
A student’s ag-related journey (June 15, 2016)
Family Land Heritage news (June 15, 2016)
Five dirty truths on agriculture (June 15, 2016)
Horseherb galloping through yards (June 15, 2016)
Kristin Storey: South Texas queen to compete for national title (June 15, 2016)
Livestock Market Reports (June 15, 2016)
Miller announces assistance for farmers devastated by floods (June 15, 2016)
No “rain, rain, go away” as precipitation persists (June 15, 2016)
Schwartz takes lead as Texas state veterinarian (June 15, 2016)
TDA Market Recap (June 15, 2016)
Texas Hay Report (June 15, 2016)
Texas Rural Leadership Program (June 15, 2016)
It’s almost rodeo time in Stockdale (June 8, 2016)
Livestock Market Reports (June 8, 2016)
Save seed pods for next fall (June 8, 2016)
TDA Market Recap (June 8, 2016)
Texas Hay Report (June 8, 2016)
Big Time Texas Hunts entries now on sale (June 1, 2016)
Burbridge leads the way in Buck Taylor roping event (June 1, 2016)
Farm Bureau solicits AgLead, FarmLead participants (June 1, 2016)
June 2016 Gardening Calendar (June 1, 2016)
Livestock Market Reports (June 1, 2016)
Save squash from vine borers (June 1, 2016)
State Farm Bureau testifies on agricultural use valuation (June 1, 2016)
TDA Market Recap (June 1, 2016)
Texas Hay Report (June 1, 2016)