Growing questions
The questions growers ask most, with an honest answer and the gear that goes with it. Can’t find yours? Ask below.
- Nutrients Can I mix nutrients from different brands? You can, but I'd stick to one brand at first. Charts only add up if you use the products they were designed around. Read the answer →
- Nutrients When should I stop feeding before harvest? Most charts end with 1–2 weeks of plain water before harvest, but the exact timing depends on the brand and medium. Follow your chart. Read the answer →
- Nutrients How can I tell nutrient deficiency from overfeeding? Look at where the problem starts. Pale or yellow older leaves point to hunger, dark glossy leaves with clawing and burnt tips point to too much feed. Read the answer →
- Nutrients Organic or mineral nutrients, what's the difference? Organic feeds work through soil life that breaks things down, so they are slower and more forgiving. Mineral nutrients are ready for the roots righ... Read the answer →
- Nutrients What do root stimulators do, and when do I use them? Root stimulators help new roots form, so use them on cuttings, seedlings and transplants. They're nice to have, not a must. Read the answer →
- Nutrients Do bloom boosters actually work? PK boosters can help a little in the middle of flower, but they won't rescue weak light or sloppy feeding. Be wary of products that are really grow... Read the answer →
- Nutrients What does silicon do for plants? Silicon builds stronger cell walls, which helps stems and the plant's stress tolerance against heat, drought and some pests. It's a nice extra, not... Read the answer →
- Nutrients What is Cal-Mag, and when do I need it? Cal-Mag is a calcium and magnesium supplement. You mostly need it in coco and with soft or RO water, or when new leaves show spots or twisting. Read the answer →
- Nutrients How much nutrient should I give per litre? Base nutrients usually land between 1 and 5 ml per litre per part, depending on brand, stage and medium. Never go over the label, and in young plan... Read the answer →
- Nutrients When do I switch to bloom nutrients? Around the time you switch to 12/12 light, or once the first flower sites show, usually 1–2 weeks after the flip. Your brand's chart gives the exac... Read the answer →
- Nutrients Which nutrients do I need for growth and flowering? A two-part grow/bloom base (or one brand's A+B) from one manufacturer is enough for most grows. Add Cal-Mag if you grow in coco or use soft or RO w... Read the answer →
- Nutrients Can I grow plants without adding nutrients? Only for a while, and only in a rich living soil or a strongly pre-fertilised mix. In coco, hydro and standard potting soil, plants need feed from ... Read the answer →
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