What is Trailing Petunias?

At Trailing Petunia, we take pride in being a small business dedicated to providing premium seeds and plants, backed by a wealth of knowledge and experience. Our mission is to empower fellow gardening enthusiasts with the tools and resources needed to cultivate lush and vibrant gardens. Join us in sowing the seeds of beauty and life, and let Trailing Petunia be your trusted partner in your gardening endeavors.

What types of products do you offer?

At Trailing Petunia, we take great pride in our commitment to providing a wide range of premium seeds to cater to all your gardening needs. Our seeds are carefully selected, rigorously tested for germination rates, and sourced from trusted suppliers.

How can I place an order?

To place an order, simply browse through the website's products and click on the items you wish to purchase. Add them to your cart, proceed to checkout, and follow the instructions to provide your shipping and payment details. Once your order is successfully placed, you will receive a confirmation email.

What payment methods are accepted?

Trailing Petunia accepts various payment methods, including major credit cards (Visa, Mastercard, American Express), PayPal, and other secure online payment options. All transactions are encrypted and secure to protect your sensitive information.

What are the shipping costs and delivery times?

Shipping costs and delivery times may vary depending on your location and the chosen shipping method. The exact shipping cost will be calculated during the checkout process after you enter your shipping address. Estimated delivery times will also be provided at that time.

Do you provide order tracking information?

Yes, you will get an email with tracking information as soon as your order ships. Using this data, you can follow the progress of your package's delivery and track it.

What is your return and exchange policy?

Your satisfaction with your purchase is important to Trailing Petunia. Within a certain time limit (usually 30 days from the delivery date), you can ask for a refund or exchange if you still need more time to get a refund or exchange. For thorough details on the return procedure, please see the website's "Returns" section.

How do I cancel an order?

If you need to cancel an order, please get in touch with us right away. In cases when the order has not yet shipped, we might be able to cancel it.

Can I contact customer support for assistance?

Absolutely! Contact the Trailing Petunia customer service staff if you need help placing your order, have any queries, or need any other assistance. They are available by phone or email and are pleased to answer any questions you may have.

Is my personal information safe on this website?

Yes, Trailing Petunia takes data security seriously. Your personal information is safeguarded by the website using industry-standard security procedures and all transactions are encrypted for your protection.

Can I subscribe to receive updates and promotions?

Yes, you can sign up for the Trailing Petunia newsletter to get notifications about new products, sales, and discounts. You can subscribe to the website's newsletter by entering your email address in the box located on the website's homepage.

Marigold plant with vibrant orange blooms and yellowing lower leaves in a sunny garden, showing common causes of yellow leaves

Why Are My Marigold Leaves Turning Yellow? Causes & Fixes

August 12, 2026

Marigolds are one of the toughest, most reliable flowers you can grow — but even they can run into trouble. If your marigold leaves are turning yellow, it’s a sign that something in the plant’s environment needs attention. The good news: yellow leaves on marigolds are almost always fixable once you identify the cause.

In this complete guide we’ll walk you through every reason marigold leaves turn yellow, how to diagnose which one you’re dealing with, and exactly what to do to get your plants back to lush, healthy green.

📌 Need bulk marigold seeds? Visit our sister site: Trailing Petunia Bulk Seeds for larger quantities at great prices.

Quick Diagnosis: Why Are Marigold Leaves Turning Yellow?

Our French Durango Red Marigold Seeds are one of the most vigorous and disease-resistant French marigold varieties available.

Cause 1: Overwatering — The #1 Culprit

Overwatering is the single most common reason marigold leaves turn yellow. Marigolds are drought-tolerant and prefer to dry out slightly between waterings. When roots sit in consistently wet soil, they can’t absorb oxygen, begin to rot, and the plant responds with yellowing leaves.

Signs: Yellow leaves starting at the bottom, soggy soil, mushy stems, wilting despite wet soil.

Fix: Let soil dry out 2 inches deep before watering again. Ensure drainage holes in containers. Trim mushy roots and repot if needed.

Mr. Majestic Marigold Seeds
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Janie Mix French Marigold Seeds
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📖 Related: Why Are My Marigolds Dying?

Cause 2: Nitrogen Deficiency

When marigolds lack nitrogen, the entire plant turns pale yellow-green starting with older lower leaves. Growth slows and plants look washed out.

Fix: Apply balanced fertilizer (10-10-10) every 2–3 weeks. Use liquid nitrogen for a quick fix. Avoid excess nitrogen once blooming starts.

Our Bonanza Harmony Marigold Seeds respond beautifully to consistent fertilizing — producing abundant bi-color blooms all season.

Cause 3: Iron or Magnesium Deficiency (Interveinal Chlorosis)

Yellow tissue between leaf veins while veins stay green = interveinal chlorosis. Usually caused by soil pH above 7.0 locking out nutrients.

Fix: Test soil pH (marigolds prefer 6.0–7.0). Lower pH with sulfur. Apply chelated iron or Epsom salt as foliar spray.

Honeycomb French Marigold Seeds
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Moonstruck Yellow Marigold Seeds
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Cause 4: Spider Mites

Tiny stippled yellow dots + fine webbing on leaf undersides = spider mites. Worse in hot, dry conditions.

Fix: Spray with insecticidal soap or neem oil covering leaf undersides. Blast with water every 2–3 days. Treat every 5–7 days for 3 weeks.

Our Taishan Mix African Marigold Seeds — African marigolds’ thick foliage and strong scent naturally deter many pests.

📖 Related: Marigolds for Companion Planting

Cause 5: Aphids

Clusters of insects on stems + sticky honeydew residue + curled yellow leaves = aphids.

Fix: Blast with water. Apply insecticidal soap or neem oil. Encourage ladybugs and lacewings.

French Durango Mix Marigold Seeds
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French Disco Mix Marigold Seeds
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Cause 6: Fusarium Wilt or Root Rot

Rapid yellowing + wilting despite moist soil + brown/mushy roots = Fusarium wilt or root rot.

Fix: Remove affected plants immediately. Rotate crops. Improve drainage. Apply copper fungicide preventively.

Our French Durango Red Marigold Seeds — starting with quality seeds is your best defense against disease.

Cause 7: Normal Aging

Only the lowest, oldest leaves yellowing while the rest of the plant is healthy and blooming = completely normal. Just remove the yellow leaves and carry on.

Our Taishan Mix African Marigold Seeds are long-season performers — some lower leaf yellowing late in the season is perfectly normal.