Learning how to care for mums in pots is a fantastic way to enjoy their vibrant fall color on a patio, balcony, or doorstep. Caring for mums in pots centers on consistent moisture, bright indirect light, and regular pinching to promote a bushy form. With the right approach, you can keep these autumn classics thriving long after you bring them home from the garden center.
How To Care For Mums In Pots
Potted mums, often called florist or garden mums, have specific needs that differ slightly from those planted in the ground. Their confined root system makes them more reliant on you for water and nutrients. This guide will walk you through every step, from selecting the right plant to helping it survive the winter.
Choosing The Right Mum And Pot
Success starts at the point of purchase. A healthy plant in a suitable container has a head start. Here is what to look for.
Selecting A Healthy Plant
Do not just grab the first mum you see. Take a moment to inspect it closely.
- Look for dense, bushy foliage with plenty of unopened buds. The plant should be wider than it is tall.
- Avoid plants with fully opened flowers, as their display will be shorter-lived. Choose one with buds just showing color.
- Check under the leaves and along stems for signs of pests like aphids or spider mites.
- Ensure the soil is moist, not bone-dry or soggy. A neglected plant at the store may struggle to recover.
Pot Selection And Preparation
The pot your mum comes in is usually a temporary nursery container. Repotting it is often the first and most important care step.
- Choose a container that is at least 2 inches wider and deeper than the nursery pot. Ensure it has multiple drainage holes.
- Use a high-quality, lightweight potting mix. Do not use garden soil, as it compacts in containers and suffocates roots.
- Gently loosen any tightly wound roots before placing the plant in its new pot. Fill around it with fresh soil and water thoroughly.
Ideal Placement And Sunlight
Mums are photoperiodic, meaning they bloom in response to shorter days. Light is crucial for their health and flowering.
- Potted mums need a minimum of 4-6 hours of direct sunlight daily. Morning sun is ideal as it dries dew from the leaves.
- In very hot climates, provide afternoon shade to prevent scorching and wilting.
- Place pots where they receive good air circulation to help prevent fungal diseases like powdery mildew.
- Rotate the pot a quarter-turn every few days so all sides of the plant get even light, promoting symmetrical growth.
Watering Your Potted Mums Correctly
Improper watering is the most common reason potted mums fail. The goal is consistent, even moisture.
Establishing A Watering Routine
Check your mums daily, especially during warm or windy weather. The soil surface should feel slightly dry to the touch before you water again.
- Water slowly at the base of the plant until you see water running freely out the drainage holes. This ensures the entire root ball is moistened.
- Never let the pot sit in a saucer full of water. Empty the saucer after 30 minutes to prevent root rot.
- Water in the morning so foliage has time to dry before cooler evening temperatures set in.
Wilting can be a sign of both under and over-watering. Check the soil first. If it’s dry, water immediately. If it’s wet, hold off and improve drainage.
Feeding And Fertilizing For Blooms
Potting mix has limited nutrients. To support all those flowers, your mums need regular feeding during their active growth phase.
- Use a balanced, water-soluble fertilizer (like a 10-10-10 or 20-20-20 formula) every 2-3 weeks from spring until the flower buds begin to show color.
- Once the buds are set and beginning to open, stop fertilizing. Continued feeding can shorten the bloom period.
- Always water the plant with plain water before applying fertilizer to avoid burning the roots.
- If you repotted with a mix containing slow-release fertilizer, you may not need to feed as often. Check the bag’s label for its duration.
Pinching And Pruning For Bushier Plants
This simple technique is the secret to a full, compact mum covered in flowers, rather than a leggy one with few blooms.
How And When To Pinch
Pinching removes the growing tip of a stem, encouraging the plant to branch out from lower leaf nodes.
- Using your fingers or clean pruners, pinch off about 1 inch of each stem’s growing tip.
- Begin this practice in late spring when the new growth is about 6 inches tall.
- Repeat the pinching process every 2-3 weeks until mid-summer, usually around the Fourth of July in most climates. After this point, you risk removing the forming flower buds.
Regular deadheading, or removing spent flowers, keeps the plant looking tidy and may encourage more side buds to open. Just snap off the old flower head just above the first set of leaves below it.
Managing Pests And Diseases
Healthy mums have few problems, but pests can sometimes appear. Early identification is key.
- Aphids: These small, soft-bodied insects cluster on new growth. Blast them off with a strong spray of water or use insecticidal soap.
- Spider Mites: Look for fine webbing and stippled leaves. Increase humidity and spray with water or a miticide.
- Powdery Mildew: A white, powdery fungus on leaves. Improve air circulation, avoid overhead watering, and apply a fungicide if needed.
- Leaf Spot: Caused by fungi or bacteria. Remove affected leaves, avoid wetting foliage, and ensure good air flow around the plant.
Overwintering Potted Mums
With proper care, hardy garden mums can survive winter and bloom again next year. Tender florist mums are often treated as annuals.
Steps For Winter Protection
After the first hard frost, when the foliage has died back, you can prepare your hardy mums for winter.
- Cut the dead stems back to about 2 inches above the soil line.
- Move the pot to a sheltered, unheated location like a garage, shed, or against a protected house foundation. The goal is to keep it cold but shielded from harsh winds and alternating freeze-thaw cycles.
- Water the soil sparingly throughout winter, just enough to prevent it from becoming completely bone-dry. The plant is dormant and needs very little.
- In early spring, as new growth appears, move the pot back into the sunlight, resume regular watering, and begin fertilizing.
Reviving A Struggling Mum Plant
If your mum is wilting, dropping buds, or looking generally unhappy, do not give up. Try these steps.
- First, check the soil moisture and adjust your watering immediately.
- If the plant is root-bound, repot it into a slightly larger container with fresh soil.
- Trim away any dead or yellowing stems and flowers to redirect the plant’s energy.
- Ensure it is getting adequate sunlight—at least 4-6 hours is non-negotiable for recovery.
- Hold off on fertilizer until the plant shows signs of new, healthy growth.
Frequently Asked Questions
How often should you water potted mums?
There is no set schedule. Water potted mums when the top inch of soil feels dry. This could be daily in hot, sunny weather or every other day in cooler, cloudy conditions. Always check the soil before watering.
Can you keep potted mums indoors?
You can enjoy them indoors temporarily in a very bright, cool spot. However, they are outdoor plants at heart and will not thrive long-term inside due to lower light levels and dry air. For best results, keep them on a sunny porch or patio.
Why are my potted mums dying?
The most common causes are improper watering (too much or too little), lack of sunlight, or being root-bound in a small pot. Check these conditions first and correct them. Also, remember many mums are sold as seasonal decor and are not always bred for long-term longevity.
Do mums in pots come back every year?
Hardy garden mums can if they are properly overwintered. Tender florist mums, often sold in grocery stores, are typically grown as annuals and are less likely to survive cold winters, even with protection. The variety and your climate are key factors.
Should you deadhead mums in containers?
Yes, deadheading is recommended. Removing spent flowers improves the plant’s appearance and can encourage remaining buds to open. It also prevents the plant from putting energy into seed production, which can shorten its overall display period.