It’s been a cool, rainy spring in southern New Hampshire. The perennial garden is lush and green. The annuals, including the tomatoes and zinnias are are showing quick signs of life and the weeds…..well….they are EVERYWHERE!
A few years ago, the mulched paths throughout our gardens were replaced with stone – a combination of pea stone, blue stone, and crushed rock. The goal at the time was to reduce the overall costs and time associated with mulching and weeding. Replacing mulch made from organic matter that breaks down – with various types of stone that lasts forever – added new interest to the landscape and made weed control (a little) easier.
One of the biggest challenges with these paths is weed prevention. And when that’s neglected, actual weed removal is an even bigger headache. The wet spring resulted in fewer days working in the garden during May and early June, resulting in a sudden explosion of weed seedlings throughout the stone paths. (You can see the growth in the pea stone path between the two garden areas below.)
Rather than spend hours picking through the stone to remove each tiny weed at the root, only to see them return in a few weeks, I researched some easier options or what I call ‘garden hacks’. In the past, Round-Up was used sparingly – before we knew how bad it is. We’ve also used vinegar, both straight and diluted, as well as boiling water. Truth be told, the vinegar option in the past worked, but weeds always returned.
After a little online research – as well as anecdotal conversations with friends who have tried various techniques to kill weeds, I found a vinegar-based recipe to spray on the weeds that expanded on the previous somewhat success of using vinegar. This recipe includes the use of table salt (1c) and Dawn dish detergent (1tbs) with household vinegar (1gal). The vinegar and sodium kill the weeds by dehydrating the weed, interrupting its internal cell structure. The detergent acts as a surfactant to ensure the vinegar and salt stick to the weeds. An important note here is that this mixture should only be used where you don’t want ANYTHING to grow. The salt, specifically, can wreak havoc with the structure of your soil. This is why I tried this solution to only on the rock pathways.
It WORKS….FAST! I used a watering can (special one set aside for projects like this so I it’s not mistakenly used for other purposes in the garden) and after a few days, went through over 25 gallons of vinegar and 25 cups of salt! The photo here was the first 17 gallons – the Nashua city workers who do our recycle pickup must be wondering what’s going on at my house! I’ve now found generic household vinegar and salt to use to save a little money – but continue to use Dawn.
Within an hour, the weeds – big and small started to disintegrate. Within a day, they were pretty much all together gone. They shriveling up to almost nothing and apparently blew away.
The majority of the time to complete this weeding project was spent stirring the salt to make sure it dissolved in the vinegar. It’s also important to gently stir in the Dawn at the end to avoid creating suds.
It’s been almost three weeks since I’ve ‘pickled’ the weeds in my garden paths. And so far, none have returned. I believe this is a simple, safe, inexpensive, and fast solution when used in the proper areas of your garden. The only drawback is the entire garden reeks of vinegar and salt for a day or two. (Be forwarded – you may start to crave pickles or salt & vinegar potato chips when you pickle your weeds.)
IMPORTANT NOTE: Of course, nothing is fool-proof. Two years ago, I shared thoughts about weeding the thyme that grows in the blue stone paths in my garden. Since I do want the thyme to grow in this area, the ‘pickling’ solution is not appropriate for this part of the garden. The only way to ensure I don’t have a followup to that earlier weeding sob story is a commitment to due-diligence now to pull the weeds in the thyme path as they pop up. Since I take a daily walk thru the garden, this is simple and effective, especially when I use my handy-dandy CobraHead mini weeder.
“I always think of my sins when I weed. They grow apace in the same way and are harder still to get rid of.”~Helena Rutherfurd Ely, A Woman’s Hardy Garden, 1903