Coffee grounds and eggshells have long been touted as excellent organic fertilizers for roses. But is there any truth to this? Let’s take a closer look.
First, let’s examine coffee grounds. Used coffee grounds are high in nitrogen, which is essential for the growth of healthy plants. The acid in the coffee also helps raise soil acidity levels, which can be beneficial for acid-loving plants like roses. However, too much of a good thing can be bad – using too many coffee grounds can make the soil too acidic and damage your roses.
Now onto eggshells. Eggshells contain calcium carbonate that helps neutralize soil acidity and aids in creating a more alkaline environment in your garden beds – this can help balance out the effects of adding nitrogen-rich coffee grounds to your soil mix. As an added bonus, eggshells also provide supplemental calcium that promotes healthy roots.
However, it’s important to note that neither of these natural amendments should be overused, or they may do more harm than good. Too many coffee grounds will result in overly acidic soil that won’t allow rose bushes to absorb nutrients effectively while having excessive amounts of eggshells could cause drainage problems- something roses absolutely dislike.
In conclusion, combining used ground coffee with crushed eggshells to give nutrients boost sounds tempting – but it needs moderation based on the composition of underlying soils and existing nutrient levels – so we always recommend you start conservatively at first until you understand how they interact with your specific growing conditions.
Overall incorporating these beloved byproducts into your composting mix seems like a valuable decision as long as it is monitored closely, giving our beloved roses a chance to bloom their best!