Disadvantages. Soil blocks are much more labor-intensive to make, compared to the time required to fill flats and pots. This can make them a less cost-effective system for larger growers or anyone pressed for time.
Johnny’s sells two brands of biodegradable pots: Fertilpots and CowPots™. These are individual containers that can be planted along with the seedlings. The pot then breaks down in the soil, allowing roots, water, and nutrients to pass through it.
For larger crops, there are cell flats with 38 or 24 cells per flat. The cells are larger, allowing for larger root balls, and the cells are round and spaced farther apart to allow for greater canopy development of the plants.
Seed-Starting Supplies & Expertise
Several different sizes accommodate different crops, similar to cell flats. Small, ¾” mini-blocks serve a similar function to 20-row seed flats for germination and potting on to larger blocks. Interchangeable dibbles can be used to make a small round seed hole, a deep round hole, or a square hole to accept mini blocks within a larger block.
Disadvantages. Plastic trays and flats do have some drawbacks.
Whether or not plastic items such as trays, flats, and domes are recyclable nowadays is essentially dependent upon their composition, which will determine your local recycling center’s policies, capabilities, and partnerships. If you use plastic seed-starting and plant containers, we encourage you to check with your local recycling center for more information on their recyclability.
Here at Johnny’s Selected Seeds, we start thousands of transplants for our Breeding and Trials programs. In this article, we’ll tell you about the pros and cons of the three main seed-starting systems we use.
If you want to grow in raised beds, you’ll have to make them out of wooden boards, have in mind they’ll also be the base where you’ll attach the pvc pipes so they need to be quite sturdy, you’ll then attach the PVC pipes to them with metal clamps, just like this:
Also make sure there are no buildings or trees blocking the sun, even though you can grow your plants with less sunlight, consistent sunlight will make a huge difference in their development.
The materials needed to build your greenhouse will depend on the climate in your area, greenhouses basically consist of a structure which holds a mesh or plastic sheet. The materials you’re going to use solely depend on the sturdiness and size you want your greenhouse to have.
The front and end walls will be of the same material you’ve made the side walls. If you choose to have a door, then you will have to build the back wall with a structure similar to the one you build for the door.
The length of the PVC pipes depends on the size of your greenhouse, it really doesn’t matter as long as the final result is something like this: