May has finally seen the arrival of some cool weather and frosts. After the very warm April it is not surprising that we are feeling unusually cold with this change.
Just as we are feeling the cold so is the garden. While many vegetables can cope with the light frosts we are currently experiencing, it is beneficial to provide them with some support. Seaweed products (Seasol) can be used to to increase plant resistance to frost. Foliar applications take about a week to be effective and can also be helpful when plants are damaged by a frost, to stimulate healthy new growth. Regular (weekly) applications of a seaweed liquid fertilizer during our cold months can be a beneficial routine. While the use of seaweed foliar sprays can provide some support for plants during light frosts, to maintain healthy strong plants that keep growing though our extremely cold climate and harsh frost season, frost protection fabrics are essential.
Plastic can provide very good protection, but does not necessarily create a healthy growing environment as it does not allow for good air circulation or water penetration. In our low rainfall location and our current drought, preventing water penetration into the garden is not recommended. Agricultural fabrics overcome both air circulation and water penetration issues. There are a number of fabrics that can be used to provide adequate frost protection.
The first thing to remember is that we are not aiming to grow things out of season, but we are aiming to provide support and a level of protection to our winter crops. This support and protection includes;