How to feed your roses all year round
Updated: Oct 5
Nitrogen stimulates green growth and gets hungry roses off to the perfect start. Apply a high-nitrogen, bio fertilizer, such as our ACTIVE GROW® AMINO GARTEN +, which contains a high level of nitrogen from natural sources, evenly throughout the area around the base of your rose. Use 1 cup per plant, and water it in thoroughly with at least 1 Lt of water. You can use it every month during spring & summer. Make sure to dilute the bio fertilizer according the dosage requirements printed on the package or visit our website : https://www.villanovaag.com/product-page/activegrow-amino-garten
A plant stressed from lack of water is more likely to be burned by nitrogen fertilizers, so make sure that the soil around the plant is wet before you add fertilizer. Watering after fertilizing helps to move nutrients into the root zone.
TIMING: Make your first application about four to six weeks before growth begins in spring or, in areas where winters are cold, about the time you take off your winter protection. Continue through summer until about six weeks before the average date of your first frost. For most cold-winter climates, it’s sometime in late August or September. Later fertilization may encourage growth that will be damaged by frosts and can result in roses that aren’t fully cold resistant.
Our liquid natural fertilizers get to roots quickly and are easy to use on container plants. Chemical fertilizers, slow-release and granular fertilizers are convenient, but alone they often don’t supply enough nutrients to keep roses growing well over a long time; you usually have to supplement with other fertilizers. While our BIO fertilizer, ACTIVE GROW® AMIO GARTEN +, combines Nitrogen, Calcium, Amino Acid, Phosphate, Boron, Magnesium, Potassium, Iron & Sulphur. Read more..
Nitrogen: Nitrogen fuels a rosebush’s growth, and you must add it to the soil regularly. This element stimulates dark green, healthy foliage growth; because a plant’s energy to make flowers is manufactured in its leaves, healthy leaves mean more flowers. Most rose foods have several times more nitrogen than phosphorous and potassium. Don’t worry about the numbers too much. Just don’t buy one of those “bloom” foods that has no nitrogen at all.
Phosphorus and potassium: Phosphorus and potassium are called macronutrients because roses need them in larger supplies than other nutrients. Some soils already contain enough phosphorus and potassium for healthy rose growth; adding more to them does little good. If your soil is short on phosphorus, add some directly to the planting hole when you put in your roses, so that it gets where it needs to go. Only a soil test can tell you for sure whether your soil needs either of these nutrients. But if you use a complete fertilizer — one with a lot of nitrogen and a little phosphorous and potassium — on a regular basis, you should be okay.
Iron: In areas where the soil is on the alkaline side, a rose plant may need applications of fertilizers containing iron. You know your roses need iron when their leaves turn yellow with green veins.
Magnesium: Many rose growers swear by magnesium applications, but only when the soil is deficient in magnesium. Magnesium sulphate — called Epsom salts in drugstores — is the form that’s usually applied. This chemical helps intensify flower color and increases production of new flowering canes. Water in 1⁄4 to 1⁄2 cup per plant together with our ACTIVE GROW® AMIO GARTEN + once or twice a year.