Miracle-Gro contains urea, which can irritate the mouth, throat, esophagus and stomach. Swallowing it can cause nausea and vomiting. According to the Manufacturer’s Safety Data Sheet for Miracle-Gro, if you accidentally swallow the product, immediately rinse the mouth out with water. Seek medical attention immediately.

‘Miracle-Gro’ is a 15-30-15 fertilizer, meaning that that the powder within contains 15 percent nitrogen, 30 percent phosphorous, and 15 percent potassium. Nitrogen, phosphorous, and potassium are the three main nutrients needed by plants, the ones plants gobble up in greatest quantity.

Miracle-Gro supplies an enormous amount of nitrogen for plants so that they grow big, bushy, green, and fast. The problem with MG is that the nitrogen is derived from synthetic ammonium and water soluble nitrates, producing off-chemicals that are harmful to soil microbes, worms, and all other forms of life in the soil.

Weakened Plants While fertilizer used in the right quantities can indeed promote houseplant growth, when overdoing it, you hinder the very growth you want. In fact, you’re slowly killing your plant, and so its foliage, stems, or roots may be undersized. They’ll also look brittle, crinkled, wilted, or limp.

It is poisonous to plants, as salty plants can’t absorb water adequately. In an attempt to adjust to the salts around them, plants use up a lot of energy that would otherwise be spent growing. These pests can literally suck the life out of plants.

Continuous release plant foods, such as Miracle-Gro® Shake ‘N Feed® All Purpose Plant Food, usually comes in granular form, and the nutrients are released slowly over time. Mix this type of fertilizer directly into the soil surrounding the plant.

According to Miracle-Gro, the All-Purpose formula is completely safe for vegetables. Miracle-Gro is most-known for its water-soluble formula, but the brand also has an organic line and products for vegetable crops. Like the standard plant food, those fertilizers are perfectly safe for vegetable plants.

Light to moderate rain is perfectly fine before or after an application. … Per the manufacturer, Miracle-Gro Water Soluble All Purpose Plant Food can be applied at anytime. Light to moderate rain is perfectly fine before or after an application.

Flowers and Vegetables For most plants, you should mix 1 tablespoon of Miracle-Gro with 1 gallon of water in a watering can. According to Scotts, exact measurements are not critical, so using a little less or a little more is not a concern.

Here, the best fertilizers for your garden’s needs.

• Best Overall Fertilizer: Miracle-Gro Water-Soluble All Purpose Plant Food.
• Best for Lawns: Scotts Turf Builder 12.6 lb.
• Best for Tomatoes: Vigoro 3.5 lb.
• Best for Gardens: Jack’s Classic All Purpose Water Soluble Plant Food.

It depends on what your definition of “work” is – Miracle Grow does a good job feeding plants in the short term. In the long term, you could argue that it doesn’t “work” because eventually the soil starts to ‘die’ and the plants become dependent on the supplements to live.

I have some Miracle Gro on hand, the water soluble kind: The blue stuff is copper sulfate, or CuSO4. In short, it is included in these formulations because plants need copper for biosynthesis; and because it acts as a fungicide, presumably leading to a nicer ecosystem in one’s lawn/garden.

Miracle-Gro Water Soluble All Purpose Plant Food is safe for all plants guaranteed not to burn when used as directed and starts to work instantly. Use on all flowers, all vegetables, houseplants, roses, and all trees and shrubs. For best results, feed every 7-14 days when plants are actively growing.

Start in Springtime Nutrient-rich soil helps plants put down healthy roots. Prepare your garden or containers in early spring (but after the last frost) with Miracle-Gro® All Purpose Garden Soil or Miracle-Gro® Potting Mix.

Per the manufacturer, Miracle-Gro Water Soluble All Purpose Plant Food can be applied at anytime. If plants are experiencing drought or really dry soil, then it is suggested to water the plant before applying the product. Light to moderate rain is perfectly fine before or after an application.

Miracle-Gro Performance Organics growing media products feature a revolutionary blend of natural and organic materials and locally sourced, specially aged compost. Miracle-Gro Performance Organics soils and plant foods are OMRI (Organics Materials Review Institute) listed as suitable for organic gardening.

The best time to use pesticides or fertilizer is in the evening or early morning until 8 am. Both the time are perfect because the sun is not working during this time frame. It’s the same phenomenon as above. The plants absorb the applied liquid fertilizer or pesticide best in the early morning.