All posts
arrow-narrow-right
Gardening for Aesthetics
arrow-narrow-right
Current article

Guide to Growing and Caring for Geranium Flowers

Published on
September 20, 2024
Guide to Growing and Caring for Geranium Flowers
Author
Why is bonsai training wire used, and when should I remove it?

Wiring is used to guide the branches into specific shapes and positions, allowing you to control how your tree grows. You can use aluminum or copper wire to gently bend and hold branches in place. Typically, wire should be left on the tree for a few months, depending on how fast your tree is growing. You’ll want to check regularly, though—if the wire starts to dig into the bark, it’s time to remove it before it damages the tree. Always be gentle when unwiring to avoid hurting the branches.

Why are bonsai pots so shallow?

Bonsai pots are shallow to restrict root growth and help control the size of the tree. This forces the tree to focus its energy on growing branches, leaves, and, eventually, creating that miniature look. Additionally, shallow pots aid in water drainage, which is crucial for bonsai health since waterlogged roots can easily lead to rot. Aesthetically, the small, shallow pots also highlight the beauty and shape of the bonsai itself, keeping the focus on the tree rather than the container.

How long does it take for a bonsai tree to fully grow?

Bonsai trees are all about patience. It can take anywhere from 5 to 10 years for a bonsai to be considered “mature,” and even then, they continue to grow and evolve throughout their lifespan. The slower the growth, the more intricate and beautiful the tree becomes. That said, if you’re looking for quicker results, starting with a pre-bonsai or young tree can speed up the process a bit!

Advertisement

Guide to Growing and Caring for Geranium Flowers

red geranium flowers thriving outdoors under the sunlight

If you’ve ever seen me swooning over a beautiful bloom, you know my love for gorgeous flowers is pretty much a given. Today, I’m excited to dive into a topic that’s near and dear to my heart: geraniums! These vibrant and charming flowers are one of those plants you’ll definitely want to have in your garden.

Geranium Profile

Geraniums are a popular choice for gardeners for good reason. They’re hardy, low-maintenance, and come in a variety of colors and sizes. Plus, they’re great for attracting pollinators like bees and butterflies to your garden. Here’s a quick rundown of what you need to know about these fabulous flowers:

Plant Type: Perennial (commonly grown as annuals)

Size: 12-24 inches tall and wide

Soil Type: Well-draining, loamy soil

Soil pH: 6.0-7.5

Bloom Time: Spring to fall

Hardiness Zones: 9-12 (can be grown as annuals in cooler climates)

Native Area: South Africa

Toxicity Level: Low (can cause mild irritation if ingested)

Popular Types of Geraniums

Alright, now that we’ve got the basics covered, let's talk about the different types of geraniums you can invite into your garden. Geraniums come in all sorts of shapes, sizes, and even smells! Here are some popular varieties you might consider:

Zonal Geraniums (Pelargonium x hortorum) thriving outdoors with pink and white flowers

Zonal Geraniums (Pelargonium x hortorum)

  • These are the classic geraniums you often see in many gardens. They boast large, round flower heads that come in a riot of colors—reds, pinks, whites, and even bi-colors. One of their distinctive features is their leaves, which have unique, horseshoe-shaped markings that make them easy to identify.
Ivy Geraniums (Pelargonium peltatum) in a hanging basket by the house

Ivy Geraniums (Pelargonium peltatum)

  • Perfect for hanging baskets and window boxes, these geraniums have trailing stems that cascade beautifully. Their ivy-like leaves and abundant flowers create a lush, flowing effect that’s hard to beat.
pink and white geranium flowers thriving outdoors

Regal Geraniums (Pelargonium grandiflorum)

  • Also known as Martha Washington geraniums, these divas have large, showy flowers that demand attention. Their blooms often have striking patterns and rich, deep colors, making them the drama queens of the geranium world.
Scented-Leaf Geraniums (Pelargonium graveolens) thriving outdoors with pink blooms

Scented-Leaf Geraniums (Pelargonium graveolens)

  • If you’re into fragrance, these are your go-to geraniums. Their leaves emit delightful scents ranging from lemon and mint to rose and even chocolate! While their flowers may be smaller and less flashy, their aromatic foliage more than makes up for it, perfect for adding a sensory experience to your garden.

When and Where to Plant Geraniums

Geraniums can be planted both indoors and outdoors. Here’s what you need to know:

Outdoor Planting

  • When to Plant: After the last frost in spring.
  • Where to Plant: Choose a sunny location with well-draining soil. Geraniums grow best when they receive at least 6 hours of sunlight each day.

Indoor Planting

  • When to Plant: Anytime, as long as they get plenty of light.
  • Where to Plant: Place them in a sunny window where they can receive at least 6 hours of direct sunlight daily.

Planting Geraniums: Seeds vs. Seedlings

Planting Geraniums: Seeds vs. Seedlings infographics step by step guide

Alright, let's get down to the nitty-gritty of planting geraniums. Whether you're starting from scratch with seeds or getting a head start with seedlings, I'll walk you through the process step by step. Ready? Let's do this!

Planting from Seeds

1. Start Seeds Indoors: Begin by starting your seeds indoors about 8-10 weeks before the last expected frost date in your area. This timing is crucial because it gives the seeds enough time to develop into healthy seedlings before they are transplanted outdoors. To start, gather some small pots or seed trays and fill them with a seed-starting mix, which is lighter and finer than regular potting soil. Plant your geranium seeds in the mix, pressing them gently into the soil and covering them lightly. You want to ensure the seeds are just barely covered because they need light to germinate. Lightly water the soil to keep it moist but not soggy, as too much water can cause the seeds to rot.

2. Keep Warm: Once your seeds are planted, maintaining the right temperature is key to successful germination. Geranium seeds prefer a warm environment, ideally around 70-75°F (21-24°C). Place your seed trays in a warm spot in your home. If you live in a cooler area or your home is a bit chilly, consider using a seedling heat mat to keep the soil at a consistent temperature. Geranium seeds typically germinate within 7-14 days, so be patient. During this time, keep an eye on the soil moisture and ensure it remains consistently damp but not waterlogged.

3. Provide Light: As soon as the seeds sprout, they will need plenty of light to grow strong and healthy. Place the seedlings under grow lights or in a sunny window where they can get at least 6-8 hours of direct sunlight each day. If you’re using grow lights, position them just a few inches above the seedlings and adjust as they grow to prevent them from becoming leggy. Adequate light is essential to prevent the seedlings from becoming weak and spindly.

4. Transplant Outdoors: After your seedlings have developed at least two sets of true leaves and all danger of frost has passed, it’s time to move them outdoors. But don’t rush this process; seedlings need to be hardened off first. This involves gradually introducing them to outdoor conditions over a week. Start by placing them outside in a sheltered, shady spot for a few hours each day, gradually increasing their exposure to sunlight and outdoor temperatures. After a week of hardening off, they should be ready to be transplanted into your garden. Choose a sunny location with well-draining soil. Dig a hole for each seedling, ensuring they are spaced about 12-24 inches apart to give them room to grow. Place the seedling in the hole, fill in with soil, and water well.

Planting from Seedlings

1. Choose Healthy Seedlings: When selecting seedlings from your local nursery, look for strong, healthy plants. Avoid any that appear wilted, have yellowing leaves, or show signs of pests or diseases. Healthy seedlings will give you the best start and are more likely to thrive once planted in your garden.

2. Prepare the Soil: Before planting, prepare your garden bed or containers. Geraniums prefer well-draining soil, so if your garden soil is heavy or clay-like, mix in some compost or sand to improve drainage. Loosen the soil to a depth of about 12 inches and mix in some compost to add nutrients. This will create a welcoming environment for your new plants.

3. Planting: Dig a hole for each seedling that is slightly larger than the root ball. Carefully remove the seedling from its pot, gently loosening the roots if they appear tangled or compacted. Place the seedling in the hole, ensuring the top of the root ball is level with the soil surface. Fill in around the seedling with soil, pressing gently to eliminate air pockets. Space each plant about 12-24 inches apart, depending on the variety, to allow for adequate growth.

4. Water Well: After planting, give your seedlings a good drink of water to help them settle in. Water the soil around the plants thoroughly, ensuring the moisture reaches the root zone. Continue to water regularly, keeping the soil consistently moist but not waterlogged, especially during the first few weeks as the plants establish themselves.

Requirements for Growing Geraniums

Requirements for Growing Geraniums infographics

Alright, now that we've got your geraniums planted, let's talk about what they need to grow into stunning, healthy plants. Here's everything you need to know:

Soil

  • What They Like: Geraniums need soil that drains well. They don’t like their roots sitting in soggy soil, so good drainage is important.
  • Pro Tip: Mix garden soil with some compost and a bit of perlite or sand. This combo helps with drainage and gives the plants the nutrients they need.

Water

  • How Much: Check the top inch of soil—if it’s dry, it’s time to water. Just make sure not to overdo it.
  • Why: Too much water can lead to root rot, which is definitely not what we want. Letting the soil dry out a bit between waterings keeps your geraniums happy.

Temperature and Humidity

  • Temperature: Aim for daytime temps between 65-75°F (18-24°C) and cooler nights around 55°F (13°C). They can handle a bit more heat, but if it’s too hot, you might see fewer blooms.
  • Humidity: Geraniums prefer moderate humidity. If you’re in a really humid area, make sure there’s good airflow around your plants to keep them healthy.

Sunlight

  • How Much: These plants love the sun! They need at least 6 hours of direct sunlight each day. If you’re growing them indoors, a sunny windowsill works great.

Location

  • Outdoor: Choose a sunny spot in your garden where they can soak up plenty of sunlight.
  • Indoor: A south or west-facing window is perfect for keeping them happy inside.

Maintenance Tips

Maintenance Tips for geraniums

Keeping your geraniums in top shape is simple with a few easy care tips.

Fertilizer

  • When and What: Use a balanced fertilizer (10-10-10) every 4-6 weeks during the growing season. This helps your geraniums stay healthy and encourages more blooms.
  • Tip: Water the soil before applying fertilizer to prevent root burn and consider using a slow-release fertilizer if you prefer a less frequent feeding schedule.

Pruning

  • How: Regularly pinch off spent blooms and any dead leaves. This keeps the plant looking tidy and it helps the plant focus its energy on producing new flowers rather than trying to maintain old ones.
  • Tip: Use clean, sharp scissors or pruning shears to make precise cuts and minimize damage to the plant. Disinfect the tools before and after use to prevent the spread of diseases.

Mulching

  • How: Apply a 2- to 3-inch layer of mulch around your geraniums but keep it a few inches away from the stems to prevent rot and allow proper air circulation. Use organic mulch like shredded bark or compost. It’s good for the soil and looks nice, too!
  • Tip: For added benefits, mix in a layer of mulch with a handful of crushed eggshells or coffee grounds. The eggshells add calcium to the soil, which is great for plant health, while the coffee grounds provide extra nutrients and improve soil texture.

Potting and Repotting

  • How: Repot your geraniums every 1-2 years if they’re in containers. This gives them fresh soil and more room for their roots, helping your plants grow better and stay healthy.
  • Tip: Choose a pot that’s just a bit larger than the current one.

Overwintering

  • How: If you live in a colder climate, bring your geraniums indoors before the first frost. Place them in a cool, bright spot and reduce watering. They don’t need as much water in the winter.
  • Tip: Consider taking them to a greenhouse or a cool, unheated room if possible. This mimics the cooler outdoor temperatures they are used to and can reduce the stress of moving them indoors.

Common Pests and Diseases

Even with top-notch care, pests and diseases can sometimes sneak in. But don’t worry! Here’s a simple guide to help you tackle these issues and keep your geraniums in tip-top shape.

Pests

  1. Aphids
    • What They Are: These little critters can be green or black and love to munch on new growth.
    • How to Spot Them: Look for tiny insects clustered on the tips of stems and leaves.
    • What to Do: Give them a good spray with insecticidal soap. This should wash them away and keep them from coming back.
  2. Whiteflies
    • What They Are: Small, white, flying insects that can be a bit of a nuisance.
    • How to Spot Them: They often fly up in a cloud when you disturb the plant.
    • What to Do: Use yellow sticky traps to catch them and spray the plants with insecticidal soap for a more thorough approach.
  3. Spider Mites
    • What They Are: Tiny pests that spin webs and cause leaves to look speckled or dusty.
    • How to Spot Them: Look for fine webs on the undersides of leaves and small, discolored spots.
    • What to Do: Increase humidity around the plant to make the environment less friendly for them. If the infestation is bad, use a miticide.

Diseases

  1. Root Rot
    • What It Is: This disease results from overwatering, causing the roots to become waterlogged and decay.
    • How to Spot It: Look for wilting, yellowing leaves, and a soggy plant base.
    • What to Do: Make sure your soil drains well and avoid letting it stay overly wet. If you catch it early, you might be able to save the plant by improving drainage and cutting back on water.
  2. Botrytis Blight
    • What It Is: Gray mold that affects flowers and leaves, often appearing as a fuzzy, grayish growth.
    • How to Spot It: Check for gray mold on flowers and brown spots on leaves.
    • What to Do: Remove affected parts of the plant and improve air circulation around your geraniums. Keeping them in a well-ventilated area helps prevent this mold from coming back.
  3. Rust
    • What It Is: Rust appears as orange or brown spots on the leaves.
    • How to Spot It: Look for rusty-colored spots on the underside of leaves.
    • What to Do: Remove and discard infected leaves to prevent the spread. Applying a fungicide can also help manage the issue if it’s widespread.

FAQS

Q: Are there any unusual geranium varieties worth growing?

A: Definitely! One fascinating variety is the ‘Chocolate Mint’ geranium, which has a chocolatey aroma and is often used in culinary applications. Another is the ‘Mrs. Pollock’ geranium, known for its striking multicolored leaves that resemble a painter’s palette.

Q: Can geraniums be used for medicinal purposes?

A: Some geranium varieties, particularly the scented-leaf types, are used in traditional medicine for their soothing properties. For instance, the leaves of scented geraniums may be used in herbal teas or as a natural remedy for minor ailments. Always consult with a healthcare provider before using plants for medicinal purposes.

Q: Can geraniums help repel insects?

A: Yes! Some geraniums, especially those with strong scents like the citronella or scented-leaf varieties, are known to help repel insects like mosquitoes. Planting these around your outdoor spaces can be a natural way to keep bugs at bay.

Related Articles

Related Articles

Best Indoor Flowering Plants: Elevate Your Home with Vibrant Blooms Year-Round Easiest Flowers to Grow Indoors for Beginners Hardy Flowers for Beginners