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Question: ranunculus ficaria
good morning, I have a garden of about 500 square meters invaded by 30% of ranunculus ficaria, last year I used the turfene herbicide L and it gave me excellent results, but this year they returned in smaller quantities, but I did not eradicate them anyway completely. Is there a better method? thanks
Answer: ranunculus ficaria
as with most weeds, the favagello (ranuculus ficaria) tends to recur over the years; the reasons are various, also because these plants spread by seed, and therefore some seeds could have arrived in your lawn coming from plants that are on the side of the road or in the neighbor's lawn (sometimes they are the ants that move the seeds from a garden to the other); in addition to this the plants of these buttercups produce small underground bulbs, which generally tend to produce cloves every year; therefore it often happens that the selective leaf herbicide is absorbed by the leaves of the mother plant, thus going to kill the main bulb; but the spent lateral cloves are still too small to produce leaves, and therefore the herbicide leaves them undisturbed, and develop with impunity the following year.
So if the buttercups are so many, it is convenient to try to deserter them again, so as to be able to completely eradicate them; this will work on 90% of the plants, so it may be that some more will still be present next year.
To prevent the favagellis (and other weeds) from spreading and ruining the turf, the best cure is to keep the small plants of the turf always well cared for and healthy.
So besides going over with a selective herbicide administration, perhaps it is also the case to ventilate the lawn to clean it from the felt; sprinkle it with soil eg turf and re-seed, providing in the following weeks also a slow release granular fertilizer for lawns: a healthy, lush and compact turf tends to leave little space for weeds, naturally limiting the number and spread.
The re-seeding of the turf is an operation that is often "skipped" or neglected, even in the first years of life of a lawn; instead it would be advisable to practice this operation every year, at the beginning of spring or at the end of summer, in order to reassemble the turf in the areas in which it is thinned out, and to favor the development of new plants in the areas damaged by the cold or where they are created spaces for various reasons, where weeds find fertile soil. Even the correct fertilization is an important practice, in fact weeds often widen where the youngest seedlings of the lawn are not yet sufficiently strong and dense, and therefore leave the soil free.