Anthocyanins belong to a parent class of molecules called flavonoids and are synthesized via the phenylpropanoid pathway. They occur in all tissues of higher plants, including leaves, stems, roots, flowers and fruits. They are odorless and moderately astringent, and can appear red, blue or purple according to their pH.
ROYGBIV – Taste the Rainbow
So where do those amazing bud colors come from? In a word, anthocyanins.
Yellow strains include Lemon Haze, Golden Lemon, and Strawberry Banana. Known for their sweet and citrusy scents and high-THC content, they are said to produce happy, invigorating effects that sharpen creativity and sensory awareness.
Sativa buds are ready to harvest when the majority of the trichomes, or resinous glands on the buds, appear milky-white with only an occasional clear trichome in the mix. Sativa bud structure is frequently elongated and thin, with an appearance similar to spears. However, the flower buds of sativa can also form foxtails, when the calyxes, or nug groupings, of the female buds stack up on each other.
The growth cycle of any plant can be divided into the four distinct stages of germination, seedlings, vegetation, and flowering. While harvest doesn’t represent a formal phase, it does constitute a significant phase for the grower.
However, differentiating indica from sativa remains very useful for cannabis cultivators. Using morphology, or phenotype, is the most common way to classify cannabis cultivars . Indica and sativa, the most commonly recognized cultivars, have distinctive physical features and growth traits. Understanding their respective growth cycles and how to tend each plant type will help ensure optimal growth and bud output.
Hybrid strains are also commonplace, with many growers opting for plants that blend the most desirable properties of both sativa and indica. Hybrids may be indica- or sativa-dominant, like Sour Diesel. White Widow exemplifies a balanced hybrid cultivar.
The sativa vegetative period starts slowly, with the stem elongating more rapidly later in the vegetative cycle. The stem of the sativa plant is fibrous rather than woody, and the leaves develop as narrow fingers. Throughout the duration of the vegetative cycle, seven to twelve leaf pairs form in a certain pattern . The first leaf pair comprises a single leaflet. The second pair has three leaflets. The third pair has five leaflets, and so on. Sativa uses less chlorophyll during the vegetative cycle than indica, resulting in light-green leaves.
Indica buds are tightly packed and tend to grow in a more chunky formation than those of sativa. Indica trichomes that are ready to harvest can take on a milky-translucence as well, but often appear more amber in color.
Sativa cultivars are not ideal for home growers hoping to cultivate indoors, or within a restricted space. These plants generally require balmy temperatures and relatively high humidity where they thrive when given have space to grow.
The vegetative phase is characterized by the growth of the stem and leaves. Photo by: Gina Coleman/Weedmaps
When the beginnings of the tap root and a leaf or two appear, the seedling can be carefully transplanted. Both indica and sativa plants require special care and benefit from proper soil composition, climate control, and lighting as they are establishing root systems. The seedling stage lasts from 1-3 weeks.