Hortiscope
Ronald C. Smith, Horticulturist
NDSU Extension Service
Q: I just got a Christmas cactus but it did not come with any information
on how to take care of it. How do I water it and what should I do with the
old blooms? Also, what kind of food does it need? (E-mail reference)
A: After the flowering period, which is now, allow the plant to go into
a resting period which means keeping the plant cool and watering
infrequently until about the end of March. Then water thoroughly when the
compost begins to dry out. When all danger of frost is past, you can
summer it outdoors in a shady spot, making sure slugs don't find it. Bring
it back inside in September before any frosts, reduce watering, and cover
all night long for more than 12 hours until buds begin to form, then don't
cover any more. Once flower buds form, increase the watering, and the
cooler you can keep the plant, the longer the blooms will last. During
periods of active growth, fertilizer about every two weeks with a
houseplant fertilizer such as Schultz's. Take cuttings and root them to
perpetuate the plant as it ages.
Q: I bought a kit with an amaryllis bulb, pot and dirt. I followed all
the directions that came with the kit. I purchased the kit on Nov. 20, 2002
and it is the same as when I planted it. What did I do wrong? (E-mail
reference)
A: Likely nothing. You probably have a non-living bulb. I would take it
back.
Q: Can peonies be started from stem cuttings? (E-mail reference)
A: By division and by seed, and if you are skilled, by grafting. From
stem cuttings, no. I have never heard of anyone having success starting
peonies from stem cuttings and my references don't indicate any success
with that method.
Q: I read your articles every week and really enjoy them. We put a sodded
lawn in during the summer of 1997 and it looked great until about two years
ago when dead spots started to appear. They range from about 6 to 12 inches
in diameter and became quite numerous this
past year. I also have been bothered by "fairy rings" during this
same time period, but don't know if the two are related. I am fairly certain
that the spots aren't caused by dog urine since we do not have a dog and
there are none running loose in our neighborhood. I thought about digging up
the spots and reseeding, but I don't know if seed would grow or what type of
seed to use so that the reseeded grass would be the same shade as the sodded
grass. (Fargo, N.D.)
A: Although this isn't the right time of year to talk about lawns, it
is perfectly fine with me if we do some out of season head knocking on the
subject. What you’ve told me doesn't surprise me. Sodded lawns on heavy
Red River valley clay soils should be core aerated every year. Then power
rake to break up the cores, and over-seed with a compatible Kentucky
bluegrass blend, since 99 and three quarters percent of all sodded lawns
are bluegrass blends. This will allow the grass to become better rooted,
improve surface drainage, and introduce seed that will eventually become
established over the years. If you have an automatic irrigation system,
flag the heads first, then cut the grass shorter than normal without
injuring it, collecting the clippings. Next, take a core aerator and go
over the lawn in two directions. Allow the cores to dry for a few hours,
then go over them with a power rake or lawn groomer. This will pulverize
the cores and provide a good bed to seed into. Spread the quality
bluegrass blend, then drag it in with either the back of a broom rake or
drag mat. This should result in a major improvement in your lawn. Repeat
this procedure each year until you get the quality of turfgrass you want.
Q: I am seeking information on how to save a jade plant that my mother
gave me before she passed away. The problem began when I purchased a jade
tree. It started to develop little white cotton ball type mold spots at the
base of the leaves where they sprout out of the stem. It is slowly consuming
the plant. I just recently discovered the same problem on my mother's jade
located on the opposite side of the room. At first I thought I had purchased
a diseased plant and it had traveled over to my mother’s plant. Now I am
beginning to wonder if how I am caring for them is the problem. Any clue as
to what this is and if it is treatable? I would hate to loose this plant as
I am tied to it for sentimental reasons. (E-mail reference)
A: It sounds like an insect problem, specifically, cottony cushion
scale. These are tough characters to control on houseplants, especially
when the infestation has progressed to the point you describe. For
possible treatment, see if you can find a No-Pest strip. Put the plants in
a large plastic trash bag or clean trash can along with the pest strip.
Seal up whatever you use for at least 24 hours and follow the directions
carefully on the package the strip comes in. This is potent stuff so
handle as instructed. To be on the safe side, take cuttings from leaves or
branches that are not infested and root them in a sand/peat (50/50)
mixture to perpetuate your mom's plant. If you will send me your mailing
address, I will forward to you the Home Propagation Techniques booklet.
Q: What causes my tomatoes to be mealy? They look great, are firm and
ripe, but when we cut them open they are mushy and mealy. What can we do to
avoid this? (E-mail reference)
A: Change to another cultivar if you are growing them in your garden.
If you are purchasing them from a supermarket, complain to the produce
manager. I don’t know specifically what causes the problem but I would
guess it has something to do with environmental/cultivar interactions. If
the tomatoes you are growing are from seed you have saved from previous
crops, that could be the answer. If I come across a definitive answer
either via my references or another authority, I'll post it to my Web
site.
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Do you have a gardening or houseplant question? Write to Hortiscope, Box 5051, NDSU Extension Service, Fargo, ND
58105 or e-mail to Ron Smith at ronsmith@ndsuext.nodak.edu.
Note to e-mail correspondents: please identify your location (city
and state) for most accurate recommendations.
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Source: Ron Smith, (701) 231-8161, ronsmith@ndsuext.nodak.edu
Editor: Rich Mattern, (701) 231-6136,
richard.mattern@ndsu.nodak.edu
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