Reducing the height of a plant is best achieved by pruning or "topping" the central stem, improving lighting to prevent leggy growth, and limiting its root space. These methods help you reset the plant's shape and encourage bushier, more compact growth.
One of the eaiest ways to reduce height and the need for PGR treatment is to maximize the amount of light plants receive to reduce "stretch." This means adequate spacing, clean glass, and fresh plastic covering. For some plants supplemental HID lighting may be feasible.
The 70/30 rule in gardening is a flexible guideline used to establish a visually pleasing, resilient, and ecologically balanced yard. Depending on your primary focus, it generally breaks down into three common interpretations:
In gardening, the "3-year rule" is a common guideline describing the three-stage establishment cycle of new perennial plants, shrubs, and trees. It states: "The first year they sleep, the second year they creep, and the third year they leap."
The plant most famously known for blooming once every 50 years is the Haleakala Silversword (or ‘āhinahina). It spends decades (often between 20 to 50 years) growing slowly, produces a single, spectacular flower stalk, and then dies.
Avoid pruning plants that bloom on "old wood" (buds set the previous year), bleed heavy sap, or need winter cold protection. Pruning these in winter risks losing next year’s flowers or stressing the plant.
When and How to Prune Your Plants: Top off your plants while they are young to encourage them to grow out, rather than up. The picture on the left is a pepper plant that I “topped off.” That means that I cut off the top of the plant to slow it's progress growing up, and to make the plant more bushy and compact.
Baking soda adds salt into the soil, raising alkalinity to a level too high for most plants. High pH can block the roots from taking up other important soil nutrients needed for optimum health. Overuse can cause plants to wilt, dry up and die.
To fill the bottom of a tall planter, use lightweight materials that won't make the pot too heavy to move or trap excess moisture. The best options include empty plastic bottles (soda, milk jugs), pool noodles cut to size, or upside-down plastic nursery pots. For stability, add a few heavy rocks or bricks at the very bottom.
Certain plants should never be planted together because they compete for the same nutrients, attract the same pests, or release chemicals that stunt each other's growth. The most notable incompatible pairs include tomatoes and potatoes, onions and beans, and fennel with almost any vegetable.
Here are some of the most common landscaping mistakes and how to avoid them, along with how to create a beautiful garden in your own yard.
The "3-hour gardening rule" is a safety guideline advising gardeners to avoid working outdoors between 11 a.m. and 2 p.m. during the summer months. This window is when the sun’s UV rays are at their strongest and temperatures peak, posing risks for both you and your plants.
To keep plants small, you can restrict their root space by keeping them in proportionally smaller pots, trim the roots during repotting, regularly prune the stems and foliage, and control their light exposure and fertilizer intake to slow down their natural growth rate.
To slow down plant growth without harming the plant, you must adjust its growing conditions to reduce its metabolic rate. This is done by limiting nutrients, restricting root space, lowering light and temperature, and reducing water.
This happens when your plant is placed in insufficient light and over time, your plant grows taller to try to capture as much light as possible. In the process of trying to absorb more light, the stems elongate, the leaves lose their color and leaf drop can occur.
Dawn dish soap is generally not safe to use on plants as a regular pesticide or cleaner. While some gardeners use highly diluted mixtures for pest control, Dawn is a detergent rather than a true soap. It is heavily formulated to strip oils and can easily burn foliage or damage the plant's delicate immune system.
Epsom salt provides plants with magnesium and sulfur. It is useful if a soil test confirms a magnesium deficiency, which can cause yellowing between leaf veins. However, excessive use can harm plants by blocking calcium absorption, so it should not be applied universally.
Baking soda (sodium bicarbonate) is a versatile, low-cost tool in agriculture and home gardening, used primarily as an organic fungicide, natural pest deterrent, and soil pH adjuster. However, it must be applied with caution; overuse can cause sodium toxicity, soil compaction, and root burn.
Stop plants from growing too tall by pruning the growing tips, bending or tying stems down (Low Stress Training), and increasing light exposure to prevent "stretching". Consistent plant management redirects energy from vertical growth into fuller, bushier, and more stable foliage.
To reduce a plant's height, use clean, sharp shears to cut the main stem just above a leaf node (where leaves attach to the stem) at your desired height. This signals the plant to redirect its energy, encouraging it to branch out and become bushier rather than growing straight up.
No, cutting the tops off potato plants stops the potatoes from growing larger. The green foliage is essential for photosynthesis; it feeds the tubers below ground. Removing the tops will force the plant to waste energy trying to regrow leaves, or it will simply stall tuber growth entirely.
For many, it's best to avoid pruning in the fall because it can stimulate new growth that will be damaged by cold. On the other hand, there are a few plants to prune in October, especially if you want to keep your garden looking gorgeous right through to spring.
The classic plant that universally says "I love you" is the Red Rose. However, if you are looking for long-lasting houseplants or specific symbolic meanings in the Victorian language of flowers, there are several wonderful alternatives to express your deepest affections.
Plants to Prune in October