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The Complete Guide to Growing Snapdragons in Pots

The Complete Guide to Growing Snapdragons in Pots


Snapdragons are popular flowering plants. We will discuss the steps of planting snapdragons in pots. From selecting the right pot and soil to proper care and maintenance.

Selecting the Right Pot and Soil

Choosing the Right Pot Size

The pot size depends on the number of plants and the space you have. You should also consider the depth as well. Snapdragon roots can grow deep. So opt pots 8-10 inches deep. You can use 3 gallon pots with drainage holes.

Selecting the Ideal Soil

Snapdragons prefer well-draining soil rich in organic matter. You should consider a potting mix specifically formulated for flowers. For example, combine equal parts of quality potting soil, compost, and perlite or vermiculite.

Snapdragons require a slightly acidic soil with a pH of 6.2-7.0. Monitor the pH levels regularly when growing snapdragons in pots. Make adjustments if necessary. Because too high or low pH can affect the nutrients absorbed.

How to Grow Snapdragons in Pots?

Choosing between Seeds and Seedlings

Pros and Cons of Seeds: Growing snapdragons from seeds is cost-effective. The seeds cost only a small part of the seedlings. You can choose the specific variety of snapdragon you want to grow. The seeds will take 2 weeks to germinate. You can transplant them into large pots after another 6-8 weeks.

Pros and Cons of Seedlings: You can transplant seedlings if you want to see immediate results. They have already gone through the delicate germination stage. However, purchasing seedlings is more expensive than buying seeds. You also have a limited selection of varieties to choose from.

How to Plant Snapdragons in Pots?

Tall snapdragons can reach up to 3 feet in height. They are typically grown in the ground. Dwarf snapdragons only grow to about 6-12 inches. They are better suited for containers.

If you've decided to grow snapdragons from seeds, make sure the 4 gallon nursery pots has good drainage. Place 2-3 seeds in each pot, about half an inch deep into the soil. Cover them lightly with soil and water gently.

Place the snapdragons pots in a sunny spot and water regularly. Snapdragons require at least 6 hours of direct sunlight daily. After the seed sprouts, remove the weaker ones. Leave only one strong plant in each pot.

How Many Snapdragon Seeds Per Pot?

As a general rule, a 12-inch pot is suitable for growing two to three snapdragon plants.

Transplanting Snapdragon Seedlings

Water the seedlings well before transplanting. This helps loosen them from their containers without damaging their roots. Carefully remove the seedling from its original container. Be careful not to damage the delicate roots.

Place the seedling into the new pot. Fill with soil until it reaches the same level as it was in its original container. Water the newly transplanted seedlings thoroughly when growing snapdragons in containers.

Sunlight Requirements

Snapdragons are sun-loving plants. However, if your area has extremely hot summers, give your snapdragons some shade during the hottest part of the day. You can provide them with some form of temporary shad. For example, using a patio umbrella.

If you're growing snapdragons indoors, place them near a window that receives direct sunlight. If natural light is limited, you can supplement with artificial grow lights. Ensure your snapdragons have enough light to thrive.

Watering and Moisture Control

Watering Frequency and Guidelines

The frequency of watering depends on various factors. For example, climate, soil type, pot size and growth stage. Generally, water these plants every other day in summer. Once or twice a week in winter.

Preventing Overwatering and Underwatering

Overwatering can lead to root rot and other fungal diseases. Ultimately causing the death of the plant. You should use plastic flower pots with proper drainage holes and a well-draining potting mix. Underwatering can result in stunted growth and wilting. Water the plant thoroughly to avoid this. You will see water draining out from the bottom of the pot.

Using Mulch to Retain Moisture

Mulching can retain moisture in potted snapdragons. After watering the plant, cover the topsoil with organic mulch. For example, shredded leaves or bark chips.

Fertilizing Snapdragons in Pots

Selecting the Right Fertilizers

Not all fertilizers are suitable for snapdragon flower in pots. You should choose one specifically formulated for flowering plants or annuals. When planting snapdragons in pots, a balanced NPK ratio of 10-10-10 or 12-12-12 is recommended.

Feeding Schedule and Amounts

The frequency and amount of fertilizer will depend on various factors. For example, pot size, soil quality, and growing conditions. Fertilize snapdragons every two to three weeks during their active growing season.

Too much fertilizer can lead to nutrient burn or even damage the plant's roots. Follow the instructions on the fertilizer label. Adjust accordingly based on your specific growing conditions.

How to Care for Snapdragons in Pots?

Regular Pruning

Pruning is the act of cutting back parts of a plant to promote new growth. This process helps the plant look more attractive and promotes stronger and healthier growth. Remove old or damaged parts of the plant. Your plant will direct more energy towards producing new flowers.

How to Deadhead Snapdragons?

Deadheading is the process of removing spent flowers from a plant. This means snipping off the entire stem of the flower after blooming. This helps to keep your plant looking tidy and prevents seed production. The plant will redirect its energy towards producing new flowers.

Simply use a pair of clean gardening shears or scissors to deadhead snapdragons. Cut the stem just above the nearest set of leaves. Remove any yellow or wilted leaves to prevent disease and promote healthy growth.

Dealing with Pests and Diseases

Common Pests

Aphids are small insects. They are green, black, or brown in color. Aphids suck the sap out of the plant. Leave behind a sticky substance called honeydew. This can attract ants and cause fungal diseases.

Thrips are tiny insects with fringed wings. They feed on the leaves and flowers of snapdragons. They can cause yellowing, distortion of the leaves and flower buds.

Spider mites are not visible to the naked eye. But you can detect the fine webs they leave behind. They feed on the sap of snapdragons and cause yellowing and wilting of leaves.

Slugs are small, slimy creatures. They feed on the leaves and stems of snapdragons. This leaves behind large holes in their wake.

Natural and Chemical Pest Control Methods

Handpicking is an effective method for large pests. For example, slugs. You can spray this natural solution on the plant to kill soft-bodied pests. For example, aphids and thrips.

Neem oil can act as an insect growth regulator, disrupting the life cycle of pests. If the infestation is severe, chemical pesticides may be necessary. You should use them sparingly. Follow the instructions carefully to avoid harming beneficial insects.

Preventing and Managing Diseases

Some snapdragon varieties are more resistant to diseases than others. When planting antirrhinum in pots, look for disease-resistant varieties. You can use chemical or organic fungicides to prevent and manage diseases. Follow the instructions carefully. Wear protective gear when applying them.

Remove the plant from the garden if it has severe disease symptoms. Disease-causing pathogens can spread through contaminated garden tools. So clean them regularly with a disinfectant solution.

Staking and Support

When and How to Stake Snapdragons?

The best time is when they are still young and small. Gently push a wooden or bamboo stake into the soil near the base of the plant. Make sure the stake is 1-2 inches away from the stem. If you are growing multiple snapdragons in one pot, stake each plant individually for better support.

Once the stake is in place, loosely tie the stem of the snapdragon to the stake using a soft material. For example, twine or fabric strips. Avoid tying it too tightly. Because this can restrict growth and damage the stem.

Using Support Structures

You can also provide additional support for your snapdragons. For example, cages or trellises. You can purchase these structures at garden centers. Trellises are best suited for single snapdragon plants. Cages are ideal for larger pots and multiple snapdragon plants.

Snapdragons in Pots Over Winter

Overwintering Snapdragons in Pots

Carefully remove your snapdragon from its current pot. Gently shake off any excess soil and place the plant in the new pot. Water thoroughly and place it in a location with bright, indirect sunlight. Keep an eye on the moisture levels during the winter months. Check the soil regularly. Water when it feels dry to the touch.

Protecting Snapdragons from Frost

Snapdragons are cold-hardy plants and can withstand light frosts. However, protect your snapdragons if there is a risk of heavy frost. Cover them with a sheet or blanket during the night when temperatures drop. Another is to place empty pots over your snapdragons. This creates a mini greenhouse effect.


We have discussed the benefits and steps for growing snapdragons in pots. We have covered everything. From selecting the right pot and soil, to planting, watering, and snapdragon care in pots.
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