The Dos and Don’ts of Fertilizing Your Geraniums for Maximum Blooms

The Dos and Don’ts of Fertilizing Your Geraniums for Maximum Blooms

Geraniums are beautiful flowering plants that can add a pop of color to any garden or indoor space. To ensure that your geraniums thrive and produce an abundance of blooms, proper fertilization is crucial. In this article, we will guide you through the dos and don’ts of fertilizing your geraniums, providing you with expert tips and techniques to help you achieve maximum blooms.

The Dos and Don’ts of Fertilizing Your Geraniums for Maximum Blooms

Understanding Geraniums’ Nutritional Needs

Before diving into the dos and don’ts of fertilizing geraniums, it’s important to understand their nutritional needs. Geraniums require a balanced diet of essential nutrients to grow vigorously and produce vibrant blooms. The primary nutrients that geraniums require are nitrogen (N), phosphorus (P), and potassium (K), commonly referred to as NPK. These nutrients play a vital role in promoting healthy foliage growth, strong root development, and abundant flower production.

Do: Choose the Right Fertilizer

When selecting a fertilizer for your geraniums, it’s crucial to choose a well-balanced formula that provides the necessary nutrients in the right proportions. Look for a fertilizer with an NPK ratio of around 10-10-10 or 20-20-20, which indicates equal proportions of nitrogen, phosphorus, and potassium. This balanced fertilizer will support overall plant health and encourage blooming.

Don’t: Overfertilize

While it may be tempting to provide your geraniums with excessive amounts of fertilizer, overfertilization can actually harm their growth and blooming potential. Too much nitrogen, in particular, can lead to excessive foliage growth at the expense of flower production. Avoid overfertilizing by following the recommended dosage instructions on the fertilizer packaging and err on the side of caution.

Do: Time Your Fertilization

Timing is key when it comes to fertilizing geraniums. Start fertilizing your geraniums in early spring, just as new growth begins to emerge. This will provide them with the necessary nutrients to support their early growth stages. Continue fertilizing every four to six weeks throughout the growing season, tapering off as fall approaches. This timed approach ensures that your geraniums receive a consistent supply of nutrients when they need them the most.

Don’t: Fertilize During Dormancy

Geraniums enter a period of dormancy during the winter months, where their growth slows down. It’s important not to fertilize your geraniums during this time as they require less nutrients. Fertilizing during dormancy can disrupt their natural growth cycle and potentially weaken the plant. Resume fertilization in spring when the plants become active again.

Do: Apply Fertilizer Properly

Proper application of fertilizer is crucial to ensure that your geraniums receive the nutrients they need without causing any harm. Start by watering your geraniums thoroughly before applying fertilizer. This helps prevent root burn and allows the plant to absorb the nutrients more effectively. Follow the package instructions for the recommended amount of fertilizer to use per square foot of planting area. Gently work the fertilizer into the soil around the base of the plants, being careful not to damage the roots. Water the plants again after fertilizing to help distribute the nutrients evenly.

Don’t: Fertilize Dry Soil

Fertilizing dry soil can lead to nutrient imbalances and potential damage to your geraniums. Always ensure that the soil is adequately moist before applying fertilizer. If the soil is dry, water your geraniums thoroughly a day or two before fertilizing. This will ensure proper nutrient uptake and minimize the risk of fertilizer burn.

Do: Monitor Plant Response

Regularly monitor your geraniums’ response to fertilization. Healthy plants will exhibit vigorous growth, lush foliage, and abundant blooms. If you notice any signs of nutrient deficiencies, such as yellowing leaves or stunted growth, adjust your fertilization routine accordingly. You may need to increase the frequency or dosage of fertilizer to meet your plants’ needs.


By following these dos and don’ts of fertilizing your geraniums, you can ensure that your plants receive the necessary nutrients to thrive and produce maximum blooms. Choose a balanced fertilizer, time your fertilization correctly, and apply it properly to avoid overfertilization and maximize your geraniums’ potential. Remember to monitor your plants’ response and make adjustments as needed. With proper fertilization, your geraniums will reward you with stunning blooms that will brighten up your garden or indoor space. Happy gardening!