Without a doubt, cannabis claims the title as one of the most beautiful plants on Earth—from its glittering trichomes and signature leaves to its complex root system. Many growers frequent their grow rooms just to stand in awe at what grows before them.
Mycorrhizae ultimately act as an extension of the root system. Not only do they break down organic matter to release nutrients, but they also transport these important molecules from areas plants could otherwise not reach. Ultimately, mycorrhizal fungi play a fundamental role in plant nutrition and soil biology and chemistry.
Although the flowers get most of the attention—and rightly so—every part of this complex species has a critical and interesting function. As a cultivator, it helps to familiarise yourself with the anatomy of the cannabis plant. In doing so, you’ll develop an eye for what your plant requires, what it needs less of, and when to harvest.
Explore our in-depth guide below to see the cannabis plant like never before.
After liberating nutrients from the substrate, the mycelium uptakes and shuttles them around to plants. Because cannabis roots aren’t capable of this impressive function themselves, they have to “bargain” with the mycelium to access these nutrients. Luckily, plants produce sugars during photosynthesis, and transport many of these molecules down into the roots. Here, they swap these energy-rich exudates for the nutrients they need to fulfil important physiological functions.
Choose a windless day when spraying where temperatures are 55 degrees Fahrenheit (12 C.) or above. Make sure children and pets are not in the area when spraying. St. Augustine and Centipede grasses will require a more diluted application to prevent killing the sensitive grass. Some post-emergent herbicides will require a second application in two weeks.
Spurweed plants, also known as lawn burweed, are found in ditches, meadows, turf, roadsides and damaged plots. The plants are low growing and produce long rangy stems filled with hairy leaves and sticky stems. The stems have purple mottling and alternate palmate leaves.
You can always pull the weeds, but the fibrous roots tend to break away and the plant can return. This is just a temporary fix anyway, as numerous seeds from the plant wait in soil for an ideal time to germinate.
Spurweed is predominant in the warmer climates of the United States and emerges in winter as an annual plant. In late spring, the real nuisance begins when the plant sets fruit. The fruits are similar to small cones and are barbed and spiny. Once the little cones are formed, the plant has plenty of seed to set for the next year’s crop and you are stuck dealing with it for another season. Spurweed control will have to wait until the coming fall when plants emerge.
A better method for eliminating spurweeds is to use an appropriate post-emergent herbicide in winter or a pre-emergent one in fall before germination has occurred. That way you can hit the plants before they form the damaging seed heads or cones. There are several formulas for spurweed control but they all rely on control when the plant is young.
We’ve all been there. Spring arrives and our grass is becoming that green carpet in which you love to spread your bare toes. But what have we here? Sticky spurweed (Soliva sessilis) plants and other weeds are competing with your lawn. Lawn spurweed is an equal opportunity pest plant that occurs in most regions of the United States. It is quite invasive and is prickly and painful on your feet and legs. A little knowledge on how to kill spurweed will help protect your lawn from this nasty weed and spare tender skin from its burs and barbs.
You can use a pre-emergent herbicide in early October to early November before the seeds have germinated. A post-emergent application should wait until you see the tiny parsley-like plants, which is usually January or February. Once you have identified them, you can use formulas of Dicamba, 2, 4D, or MCPP. Follow the directions carefully for a two- or three-way mixture as recommended by the manufacturer.