Q: I recently purchased some tender geraniums in pots for my patio this summer. Should I feed them, and if yes, how and when should I do it?
A: Tender geraniums, or pelargoniums, are excellent for container gardens. Providing fertilizer encourages abundant blooms and lush leaves, as a gardening expert highlights. Fertilizers deliver crucial nutrients that enhance plant resilience against pests and diseases.
Feeding your geraniums properly and at the right times is crucial for optimal growth. This guide will help you keep your plants thriving and blooming beautifully.
Pelargoniums showcase vibrant flowers during summer.
Autumn is a horticulture expert with a passion for creating beautiful indoor and outdoor spaces. With years of experience, she focuses on plant care, selection, and landscape design.
Pro Tips for Fertilizing Geraniums
Whether you're a fan of pelargoniums or just have a few around, these tips will keep them flourishing.
Feeding Geraniums in Pots
Always dilute liquid fertilizer as per instructions.
A nursery owner suggests feeding potted pelargoniums every two to four weeks in spring and summer. In fall, reduce feeding to once a month and cease during winter.
Slow-release fertilizers should be used at the start of the growing season, with attention to package directions regarding quantity and frequency.
"Always adhere to the instructions on the fertilizer container," she advises. When using liquid fertilizer, water the plants to ensure even coverage at the base. Avoid foliage contact to prevent damage.
If using granular fertilizer, spread it evenly over the soil surface, steering clear of the stems and leaves.
Feeding Geraniums in Garden Beds
Pelargoniums in garden beds also benefit from fertilization.
Pelargoniums also thrive in garden beds and will benefit from fertilization.
It's recommended to fertilize them every four to six weeks during the growing season. "As with potted plants, focus the fertilizer near the roots, avoiding contact with leaves or flowers," she adds.
For garden beds, apply slow-release granular fertilizers at the beginning of the growing season, per package instructions based on the number and size of plants.
Common Questions
When Should You Fertilize Geraniums?
Do not apply fertilizer while overwintering geraniums. Fertilization can continue until the first frost of fall.
"It's best to apply liquid fertilizer during your regular watering schedule, ideally in the morning or evening," she adds.
What Type of Fertilizer is Best for Geraniums?
For general feeding, a balanced, water-soluble fertilizer with an NPK ratio of 10-10-10 or 20-20-20 is recommended. Switch to a fertilizer higher in phosphorus, like 15-30-15, during the flowering phase.
Consider using Miracle-Gro Bloom Booster Flower Food, from Amazon, known for its positive reviews. For a balanced option, try Jack's Classic 20-20-20 all-purpose fertilizer, also from Amazon.
If you prefer organic options, compost tea or blood meal are effective for geraniums.
How to Identify Overfeeding in Geraniums?
Overfeeding can harm geraniums. Look for yellowing leaves, burnt edges, or reduced blooms as signs of over-fertilization.
If a potted plant shows these symptoms, flush the soil with water until it drains from the bottom. This helps remove excess nutrients. Adjust your feeding schedule accordingly.
You can also flush the soil of over-fertilized plants in garden beds using a garden hose.
Correct feeding boosts plant health, both indoors and outdoors. Just steer clear of common fertilizing mistakes.
