weed and oxalis
have a garden that has been neglected for a number of years and
is smothered with onion weed and oxalis (a fine white flower type).
Is there a spray or sprays that I could use?
asked one of our horticulture lecturers, Reg Lewthwaite, for his
For onion weed, Reg suggests
that you try glycophosphate. This will also (temporarily) kill grasses,
so you should try to paint or wipe it onto the onion weed leaves.
As for oxalis, Reg notes
that there are a number of types of oxalis, and some information
indicates that some agrichemicals work better than others. Reg uses
glycophosphate on the leaves, which kills off the tops, but leaves
the bulbs behind to remove by hand. You can also repeat the treatment
on any new leaves which emerge.
Other possible sprays
include: Foresite 380; Grazon (for creeping oxalis in turf), Ronstar
DG, Rout Ornamental, Tordon Brushkiller and Cloropyralid (Versatill).
As always with sprays,
carefully follow the safety and application instructions.
by Dr Dan Blanchon from Unitec's Diploma in Sustainable Horticulture and Bachelor
of Resource Management.
with permission from NZOOM Home and Garden content,
from the previous
The views expressed here are not necessarily those of the RNZIH