Reduce the amount of climbing asparagus and limit the locations that have it.
|Production threat||Environmental threat||Public threat|
Climbing asparagus is a perennial scrambling vine that climbs to approximately 6m. It is capable of smothering seedlings and saplings and shading out, strangling and ring barking larger trees. Climbing asparagus is able to grow in semi-shade so it can invade forest areas, making it a serious threat to native plants. Once established, climbing asparagus is difficult to eradicate.
Climbing asparagus spreads by:
A native of South Africa, climbing asparagus was originally brought into New Zealand as an ornamental garden plant. It has spread since then to many native forest areas, including infestations found on the Coromandel Peninsula and Raglan.
Climbing asparagus can reach several metres in length. It forms underground mats of small, white tuberous roots in bush margins, tree fall gaps, hedges and wasteland areas.
All landowners/occupiers in the Waikato are responsible for controlling climbing asparagus on their properties. Climbing asparagus is also banned from being sold, propagated, distributed or included in commercial displays.
Climbing asparagus wraps itself around its hosts, making it difficult to spray without affecting other plants. Physical control may be preferable to herbicide control as it causes less damage to other plants.
First, cut back the leaves and stems of the plant then dig out all roots and tubers. Tubers should be burned and totally destroyed.
Best results are achieved from spring to early summer.
Cut stems 60-100cm above ground level and immediately spray the remaining foliage with herbicide until wet, but not dripping.
A ‘weed wiper’ sprayer can also be used to spray the plants. If using a weed wiper, allow the wiping area to become fully saturated before starting and make sure the wiping area remains moist and clean.
Safety when using herbicides
Disclaimer: Any product names mentioned below are not an endorsement nor are they a criticism of similar products not mentioned.
|Glyphosate gel||Cut stump treatment.|
|Herbicide rules will apply. You may need to notify neighbours if spraying. The Waikato Regional Plan explains the agrichemical (herbicides) use rule in section 6.2|
After initial control, it’s important to:
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