Introduction
The arrival of summer brings the exciting anticipation of tall, elegant flower spikes in the garden. Growing gladiolus is a rewarding way to add vertical interest and vibrant color to your landscape. These flowers are beloved for their dramatic presence and their role as exceptional cut flowers for indoor arrangements. At Longfield Gardens, we enjoy helping you grow the most beautiful displays possible by sharing practical advice for every step of the process.
While we often focus on sunlight and soil, many gardeners wonder about the local wildlife. Specifically, do squirrels like gladiolus bulbs? Understanding how squirrels interact with your garden is the first step toward a successful growing season. This guide explains why these curious neighbors might be interested in your gladiolus and provides simple, effective ways to protect your plants. Our goal is to ensure your gardening experience remains a joyful and relaxing activity.
Squirrels are naturally curious and constantly searching for energy-rich food sources. Because gladiolus corms—which most gardeners call bulbs—are packed with nutrients, they can occasionally attract unwanted attention. By learning a few easy techniques for protection and planting, you can keep your garden looking its best.
Do Squirrels Eat Gladiolus Bulbs?
The short answer is yes, squirrels do like gladiolus bulbs. To be more precise, gladiolus grow from "corms," which are underground storage organs similar to bulbs. These corms are high in starch and protein, making them a tempting snack for a variety of rodents. While squirrels are famous for their love of tulips and crocuses in the fall, they are also quite happy to find gladiolus in the spring.
It is important to remember that squirrels do not always dig with the intent to eat. Sometimes, their behavior is driven by curiosity or instinct. When they see a patch of freshly turned soil, they often assume another animal has buried a "treasure" there, like a nut or a seed. They will dig to investigate, and if they find a gladiolus corm, they might take a bite or carry it off to another part of the yard.
Because gladiolus are typically planted in the spring, the timing of their planting often coincides with a period of high activity for squirrels. In many regions, this is when squirrels are busy searching for food after a long winter. Providing a little extra protection during the first few weeks after planting is usually all it takes to keep your flowers safe.
Why Squirrels Are Attracted to Your Garden
Understanding why squirrels are drawn to your planting beds helps you choose the right protection strategy. It is rarely about the squirrels trying to cause trouble. Instead, they are simply following their natural instincts to find food and store resources.
Freshly Turned Soil
Fresh soil is the primary signal to a squirrel that something interesting is happening. In nature, soft, loose dirt often means a food source has been hidden. When you dig a hole to plant your gladiolus, you are inadvertently sending an invitation to any squirrel watching from a nearby tree. They are very observant and will often wait until you leave the garden to go and investigate your work.
The Scent of the Corms
Gladiolus corms have a distinct scent that squirrels can detect, especially if the corms are damaged or if the outer papery skins are left on the soil surface. These scents act like a trail of breadcrumbs leading straight to your planting site. The more you can do to minimize these scents, the less likely the squirrels are to notice your new additions.
Nutritional Needs
In early spring, food can be scarce. Squirrels need high-energy food to support their active lifestyles and to raise their young. A gladiolus corm is a concentrated source of energy. While they might prefer nuts or seeds, they are opportunistic eaters and will settle for a nutritious corm if it is easy to access.
Key Takeaway: Squirrels are attracted to the sight of fresh soil and the scent of the bulbs. Protecting your gladiolus is mostly about hiding these cues and making the corms harder to reach.
Physical Barriers for Maximum Protection
Physical barriers are the most reliable way to keep squirrels away from your gladiolus. These methods create a "shield" that prevents the squirrels from reaching the corms, even if they know exactly where they are buried.
Using Chicken Wire or Hardware Cloth
One of the easiest and most effective ways to protect a large area of gladiolus is to use chicken wire. After you plant your corms at the proper depth, lay a piece of chicken wire flat over the soil surface. You can secure the edges with garden stakes or heavy rocks.
The holes in the chicken wire are large enough for the gladiolus spikes to grow through, but the wire itself prevents squirrels from digging. For a more finished look, you can cover the wire with a thin layer of mulch. Hardware cloth works in the same way but has a smaller mesh pattern, which is helpful if you also have smaller pests like voles.
Bulb Cages
If you are planting gladiolus in small groups or tucked between other perennials, individual bulb cages are a great option. You can buy these pre-made or fashion them yourself out of wire mesh. Simply place the corms inside the cage, bury the cage at the recommended depth, and fill it with soil. This method provides 360-degree protection, ensuring that neither digging squirrels nor burrowing rodents can reach the tender corms.
Top-Down Protection with Row Covers
For the first few weeks after planting, you can use a floating row cover to hide the soil. These lightweight fabrics allow light and water to reach the ground but keep squirrels from seeing the disturbed earth. Once the gladiolus shoots have emerged and the soil has settled, you can remove the cover. This is a simple "set it and forget it" method that works well for many home gardeners.
Strategic Planting to Deter Squirrels
You can outsmart squirrels by changing how and where you plant your gladiolus. By using the natural layout of your garden and the preferences of the squirrels, you can reduce the chances of your corms being disturbed.
The Power of Planting Depth
Getting the planting depth right is a quiet winner in the garden. Most gladiolus should be planted about 4 to 6 inches deep. While squirrels are excellent diggers, they often give up if they have to work too hard. Planting your corms at the deeper end of the recommended range makes them much less accessible to casual diggers. Always ensure you have at least 4 inches of soil covering the top of the corm.
Interplanting with Unpalatable Bulbs
Squirrels have a very strong sense of smell, and there are certain plants they simply do not like. By interplanting your gladiolus with these "unpalatable" varieties, you can create a natural scent barrier.
- Alliums: These members of the onion family have a scent that squirrels find very off-putting.
- Daffodils: These contain a bitter substance called lycorine that animals avoid.
- Fritillaria: These bulbs have a very strong, musky odor that acts as a natural deterrent.
Even though many of these are fall-planted bulbs, having them established in your garden beds helps protect the spring-planted gladiolus that you tuck in nearby.
Using Groundcovers as a Shield
Planting your gladiolus among established groundcovers is a clever strategy. Squirrels are often "lazy" diggers and prefer open, clear soil. If they have to dig through a thick mat of roots from plants like creeping phlox, vinca, or sedum, they are much more likely to move on to an easier spot. The groundcover also helps hide the evidence of your digging.
What to Do Next:
- Choose a spot with at least 6 hours of sunlight and good drainage.
- Plant your corms 4–6 inches deep to make them harder to reach.
- Lay a piece of chicken wire over the area if squirrels are active in your yard.
- Cover the wire with a light layer of mulch to hide the metal and the fresh soil.
Natural Repellents and Scent Deterrents
If you prefer not to use physical barriers, there are several natural ways to make your garden less appealing to squirrels. These methods rely on the squirrel's sensitive nose and taste buds.
Coffee Grounds and Red Pepper
Many gardeners find success using common kitchen items. Used coffee grounds have a strong scent and a gritty texture that squirrels dislike. Spreading a layer of coffee grounds over your planting site can help mask the scent of the corms.
Another option is a light dusting of red pepper flakes or cayenne pepper. When a squirrel starts to dig and encounters the heat of the pepper, it will quickly decide to look elsewhere. Keep in mind that these treatments need to be reapplied after heavy rain or watering to remain effective.
Commercial Repellents
There are many effective, non-toxic repellents available at garden centers. These products often use scent-based ingredients like dried blood, putrified egg solids, or garlic oil. While the names sound unpleasant to us, they are very effective at signaling to wildlife that a predator might be nearby or that the food source is spoiled. We recommend following the label instructions carefully for the best results.
Avoiding "Smelly" Fertilizers
One mistake that often leads to squirrel trouble is using fertilizers that smell like food. Products like bone meal, fish emulsion, and blood meal are excellent for plants, but they smell delicious to a hungry squirrel or a roaming dog. If you have a squirrel problem, it is better to use a balanced, synthetic slow-release fertilizer that does not have a strong organic scent.
Garden Hygiene: Covering Your Tracks
One of the simplest ways to protect your gladiolus is to be a "stealthy" gardener. By leaving fewer clues behind, you give the squirrels fewer reasons to investigate.
Clean Up Bulb Debris
When you are planting, it is common for the brown, papery outer layers of the corms to fall off. These "skins" carry the concentrated scent of the plant. Make sure to collect all these fragments and dispose of them away from your garden beds. If you leave them lying on the surface, you are essentially leaving a sign that says "food buried here."
Tamp Down the Soil
After filling in your planting holes, use your hand or a flat shovel to firmly tamp down the soil. This removes air pockets and makes the surface look more natural. Loose, fluffy soil is a big neon sign for a squirrel. Once the soil is firm, you can lightly rake the area to blend it in with the surrounding garden so there are no obvious "circles" where you dug.
Water Immediately After Planting
Watering your gladiolus immediately after planting is good for the corm, but it also helps settle the soil. This eliminates the "fresh dirt" smell and makes the ground look more established. It also helps wash away any lingering scents from your hands or the corms themselves.
Growing Gladiolus in Containers
If you find that the squirrels in your neighborhood are particularly persistent, growing gladiolus in containers is a fantastic alternative. This method gives you total control over the environment and makes it much easier to protect your plants.
Choosing the Right Pot
Gladiolus need a pot that is deep enough to support their tall spikes and accommodate their roots. A container that is at least 10 to 12 inches deep is ideal. Ensure the pot has plenty of drainage holes, as gladiolus do not like to sit in soggy soil.
Protecting the Container
The beauty of container gardening is that you can move the pots to a protected area, such as a porch or a deck, while the corms are getting established. If you still see squirrels investigating your pots, you can place a small circle of chicken wire just under the soil surface of the container. This provides a hidden layer of protection that won't interfere with the beauty of your arrangement.
The Benefits of Containers
Containers allow you to bring your gladiolus close to your seating areas or entryways, where your presence alone can act as a deterrent to squirrels. Additionally, containers provide excellent drainage, which is one of the most important factors for gladiolus health. At Longfield Gardens, we often suggest containers for gardeners who want to enjoy these blooms without the worry of ground-level pests.
Maintaining Realistic Expectations
In the world of gardening, it is helpful to remember that nature is always changing. Weather, local animal populations, and the availability of other food sources can all influence how squirrels behave in your yard.
One year, you may find that the squirrels ignore your gladiolus entirely. The next year, they might be more curious. This is perfectly normal. By using a combination of the methods we’ve discussed—like planting at the right depth and using a physical barrier—you are setting yourself up for the highest chance of success.
Gardening is meant to be a relaxing and rewarding hobby. If a squirrel does manage to find one of your corms, don't let it discourage you. Most gardeners find that by protecting their plants for just the first two to three weeks after planting, the rest of the season is smooth sailing. Once the plants have grown a few inches and the soil has hardened, squirrels usually lose interest.
Simple Steps for Success
To keep your gladiolus safe and ensure a beautiful summer display, follow these simple rules:
- Right Place: Choose a sunny spot with soil that drains well. Water that leaves the soil quickly is better for the health of the corm and helps settle the ground faster.
- Right Depth: Aim for 4 to 6 inches deep. This puts the "prize" out of easy reach for most squirrels.
- Hide the Evidence: Clean up papery skins and tamp down the soil to make the area look undisturbed.
- Use Barriers: If you have high squirrel activity, chicken wire is your best friend. It is inexpensive, easy to use, and highly effective.
Conclusion
Growing gladiolus is a wonderful way to bring height and vibrant color to your summer landscape. While squirrels do like the nutritious corms, they are easily outsmarted with a few simple techniques. Whether you choose to use physical barriers like chicken wire, natural deterrents like red pepper, or the strategic protection of containers, you can enjoy these stunning blooms with confidence.
At Longfield Gardens, we want you to feel empowered in your garden. Protecting your plants shouldn't feel like a chore; it’s simply part of the process of nurturing something beautiful. By taking a few extra minutes during planting to "squirrel-proof" your beds, you can spend the rest of the summer enjoying the spectacular display of your hard work.
- Plant corms at least 4–6 inches deep to discourage easy digging.
- Use chicken wire or hardware cloth as a reliable physical barrier.
- Keep the planting area clean by removing all debris and papery skins.
- Consider container gardening for an easy-to-protect alternative.
Gardening is a journey that connects us with the natural world. With a little preparation and these simple steps, you can create a thriving, beautiful garden that you’ll be proud to share with your friends and family.
FAQ
What is the single best way to stop squirrels from digging up my bulbs?
The most effective method is using a physical barrier like chicken wire or hardware cloth. By laying the wire over the soil or creating a small cage around the bulbs, you physically prevent the squirrels from reaching them. This is much more reliable than scents or sprays, which can wear off or be ignored by determined animals.
Do squirrels only eat gladiolus bulbs in the spring?
Squirrels are most likely to dig up gladiolus shortly after they are planted in the spring because the soil is soft and easy to move. While they may occasionally dig in the summer, they are usually distracted by other food sources like berries and seeds by that time. Most of the damage happens in the first two weeks after you put the corms in the ground.
Will squirrels eat the flowers or leaves of the gladiolus?
While squirrels primarily go after the underground corm, they may occasionally nibble on the tender new shoots as they emerge. However, this is much less common than digging for the corm itself. If you notice the tops of your plants being eaten, the culprit is more likely to be a rabbit or a deer, rather than a squirrel.
Does planting gladiolus deeper really help?
Yes, planting at the deeper end of the recommended range (about 6 inches) makes a significant difference. Squirrels are opportunistic and prefer to dig in the top 2 or 3 inches of soil. If they don't find anything quickly, they often move on. Deep planting combined with tamping the soil down firmly is a very effective deterrent.
