Once Upon a Plant: 5 Springtime Fertilization Secrets from a GrowBuddy User

Posted by Brittany Anas on April 25, 2017

Hands holding organic soil

You know fertilizing your marijuana plants is key to growing a healthy crop. But how exactly do the pros do it? Here, GrowBuddy user Bob Kerr, cultivations manager at Deep Roots Harvest in Nevada, shares his favorite springtime fertilization tips so your plants get the feed that they need.

1. Check in with your local extensions program

Dig up information online from your state university’s extension program, Kerr suggests. Soil is made up of sand, silt, clay and organic matter, but depending on where you live and garden, that composition can vary drastically. The U.S. Department of Agriculture has a soil survey map to help you pinpoint your regional soil type

2. Get a soil analysis

Want to get nerdy about your soil? Kerr suggests sending in a soil sample to the local extensions program. It’s available to the public, so why not? A soil test kit will cost you $50 to $60, Kerr says, and it will tell all, including a full list of nutrients and macronutrients. Knowing your soil’s composition will help you determine drainage as well as nourishment.

3. Network with other gardeners

Find a Master Gardener program in your area, or any other type of gardening group. Master Gardener programs are often offered through universities in the United States and Canada, and provide horticultural training to individuals who then volunteer as “Master Gardeners” in their communities and give lectures, conduct research or create gardens. “These are enthusiastic gardeners, right in your neighborhood. They have a lot of information to share,” Kerr says.

4. Track your fertilization in GrowBuddy

GrowBuddy helps keep track of what’s working, and can record everything–from when you planted seeds to how your fertilized your crops. “GrowBuddy helps you become a better grower,” Kerr says. “It can help you finetune the optimal time to fertilize. Then you’ll know for future years and help your yield improve and evolve.”

5. Choose an organic fertilizer

When it comes to fertilizers, Kerr says he favors the organic ones. “They have a low salt content,” he says. “The synthetic fertilizers are harder on the plants and can damage them. It’s pretty hard to burn anything with organics, but if you feed your plants with the more potent fertilizers, you can destroy a crop.” Check fertilizers’ packages for a stamp from OMRI, which stands for Organic Materials Review Institute, Kerr suggests. He says this independent entity ensures fertilizers are actually organic.