You can do this by hand, but the blender is much easier. Put it into a pump garden sprayer, or even a water pistol with a spray setting, and spray the new shoots and under the leaves of your aphid-infected plants. This spray will also kill caterpillars, stink bugs, pear and cherry slugs. The spray dries and flakes off, taking the suffocated pests with it. It’s even safer than oil sprays, which can burn foliage if we get a sudden heat spell of over 24 degrees. If it doesn’t flake off, and you are expecting the garden club for afternoon tea, give the plants a thorough hosing instead, which will dissolve it. It won’t cure the brown splotches left by pear and cherry slug, but nothing will, except a fresh growth of leaves.
