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

How to Grow Hyacinths: A Complete Guide

Published on
September 24, 2024
How to Grow Hyacinths: A Complete Guide
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

How to Grow Hyacinths: A Complete Guide

hyacinth planted in soil outdoors

Plant Type: Bulbous perennial

Size: 6-12 inches tall

Soil Type: Well-drained, fertile soil

Soil pH: Slightly acidic (6.0-6.5)

Bloom Time: Spring

Hardiness zones: 4-8

Native Area: Eastern Mediterranean region

Toxicity Level: Toxic to pets and humans if ingested

If you’re looking for a flower that bursts with color and releases a heavenly scent, hyacinths should be at the top of your list. Whether you want to grow them indoors or out in your garden, hyacinths are relatively easy to care for, making them ideal for beginners.

In this guide, I’ll walk you through everything you need to know, from choosing the best types to planting, maintaining, and caring for your hyacinths.

Best Hyacinth Varieties

Hyacinthus orientalis

This is the most common hyacinth variety, known for its large, fragrant flower spikes in a variety of colors. It thrives in full sun and fast-draining soil, and the bulbs should be planted in autumn to grow hyacinth with beautiful spring blooms.

Roman Hyacinths (Hyacinthus romanus)

With looser, less dense flower clusters in white or pale pink, Roman hyacinths offer a more delicate aesthetic. Like other hyacinths, they prefer full sun and well-drained soil, and planting in autumn ensures spring flowering.

Grape Hyacinths (Muscari)

Although technically not a true hyacinth, these charming plants feature compact clusters of tiny, bell-shaped flowers resembling grapes. They are incredibly easy to grow and naturalize readily, making them a fantastic choice for low-maintenance ground cover. They thrive in full sun to partial shade and well-drained soil, with autumn planting for spring blooms.

When and Where to Plant and Grow Hyacinths

hands plantinga seed in the soil outdoors

Outdoor Planting

When to plant
  • The best time to learn how to grow a hyacinth outdoors is in the fall, typically between September and November, depending on your climate. You want to plant them before the ground freezes, as the bulbs need the cold winter months to develop roots and prepare for their spring bloom. Aim to plant them about 6-8 weeks before the first hard frost in your area.
Where to plant
  • Hyacinths love sunlight, so choose a spot in your garden that gets at least 4-6 hours of sunlight each day. They also prefer well-drained soil, meaning the area shouldn’t hold onto water after rain—too much moisture can cause the bulbs to degrade. Raised beds or sloped areas can help with drainage. They also do well in garden borders, containers, or even as part of a mixed flower bed. Just avoid shady, waterlogged areas where they won’t thrive.

Indoor Planting

When to plant
  • Indoor hyacinths need a chilling period to mimic the winter conditions they would experience outdoors. To achieve this for growing hyacinth bulb indoors, plant the bulbs in pots and keep them in a cool, dark place like a refrigerator or unheated garage for 10-12 weeks. Once they've been chilled, you can bring them inside to a warmer location, and they’ll start blooming in about 2-3 weeks. This method lets you enjoy their lovely blooms during the winter months.
Where to plant
  • Once you bring your potted hyacinths out of cold storage, place them in a sunny spot indoors, like a bright windowsill. They prefer indirect sunlight and a room temperature around 60-70°F (15-21°C). Keep them away from drafty windows or heat sources like radiators, which can dry them out or damage the blooms.

Step-by-Step Guide to Planting Hyacinths

how to plant hyacinth infographics a step by step guide

Planting Hyacinth Bulbs (The most common method)

Choose your spot

Pick a location with well-draining soil and plenty of sunlight. If you’re planting outdoors, find a spot that gets at least 4-6 hours of sun each day. For indoor planting, choose a sunny window where the bulbs can get indirect sunlight.

Dig the hole

For outdoor planting, dig holes about 6-8 inches deep. This ensures the bulbs are planted deep enough to develop strong roots and protect them from frost. If you’re planting in containers, make sure the pot is at least 6-8 inches deep to accommodate the bulbs and allow space for root growth.

Place the bulbs

Place each bulb in the hole with the pointy end facing up and the flat, rounded end facing down. Space the bulbs about 4-6 inches apart so they have enough room to grow. For a fuller look, plant them in groups of 3-5 bulbs, but make sure they’re not too crowded.

Water lightly

After planting the bulbs, give the soil a light watering. This helps settle the soil around the bulbs and kickstarts the rooting process. Be careful not to overwater, as hyacinth bulbs can deteriorate in soggy soil.

Mulch

If you’re planting outdoors, cover the soil with a light layer of mulch, like straw or shredded leaves. Mulching helps protect the bulbs from harsh winter temperatures and keeps the soil moist but not waterlogged.

Planting Hyacinth from Seeds (Less common)

Start in trays

Sow the hyacinth seeds in seed trays filled with seed-starting compost. Place the trays in a cool location, ideally in a cold frame or unheated greenhouse, and keep the soil lightly moist. It’s important to know that hyacinth seeds need cold stratification, which means they need to experience a cold period to germinate, similar to how they would in nature.

Transplant seedlings

Once the seedlings have sprouted and developed a few sets of leaves, they can be transplanted into individual pots or directly into the garden if it’s warm enough. Be sure to handle the seedlings carefully, as they’re delicate at this stage. Plant them in well-draining soil in a sunny spot, just like you would with bulbs.

Requirements for Growing Hyacinths

Requirements for Growing Hyacinths soil, water, temperature and humidity, location

Soil

Outdoor

Hyacinths prefer well-drained, loamy soil. If your garden soil tends to hold water or becomes compacted, consider mixing in some compost or sand to improve drainage. Hyacinths don’t like "wet feet" (sitting in soggy soil), as this can cause their bulbs to rot. A slightly acidic to neutral pH (around 6.0-7.0) is ideal.

Indoor

Use a lightweight potting mix or a special bulb compost. It’s important to choose a pot with good drainage, so the water can flow out and prevent the bulbs from sitting in water. If the soil stays too wet, your indoor hyacinths won’t thrive.

Water

Outdoor: Water your hyacinths when the top inch of soil feels dry. Once established, they don’t need much watering, especially in the fall and winter. Too much water can cause bulb rot, so be cautious, especially during rainy seasons.

Indoor: Water the pots when the soil feels dry to the touch. Avoid overwatering as this can lead to soggy roots. Make sure excess water drains out of the pot.

Temperature & Humidity

Outdoor

Hyacinths are hardy and can withstand cold winters. In fact, they need cold temperatures to bloom in the spring. Ideally, outdoor hyacinths should experience winter temperatures between 35°F and 45°F (1°C to 7°C). However, once blooming in spring, they prefer cooler, more moderate temperatures, around 60-65°F (15-18°C).

Indoor

If you’re interested in how to grow hyacinth indoors, they require a period of chilling to simulate winter. For indoor forcing, place the bulbs in a cool, dark space (such as a refrigerator or garage) for 10-12 weeks at temperatures around 40°F (4°C). Once this period is over and you bring them indoors, keep them at a moderate room temperature of 60-70°F (15-21°C).

Location

Outdoor

When planting outdoors, hyacinths do best in sunny, well-drained areas. Avoid planting in spots that get waterlogged, such as at the bottom of a slope or in low-lying areas. Raised beds or garden borders work well, and they look great when grouped together in clusters or rows.

Indoor

Indoors, the best location for growing hyacinths is a spot that gets plenty of indirect sunlight. They do well on windowsills, tables near windows, or anywhere that gets enough light without being too close to drafts or heating sources. Make sure the pot has good drainage, as sitting in water can harm the bulbs.

Maintenance Tips for Growing Healthy Hyacinths

Maintenance Tips for Growing Healthy Hyacinths, fertilizing, pruning, potting and repotting, mulching

Fertilizer

Outdoor

Fertilize your hyacinths in early spring, just as they’re beginning to sprout. Use a balanced, slow-release fertilizer (like a 10-10-10 blend) and sprinkle it around the base of the plants. Avoid getting fertilizer directly on the bulbs or leaves, as this can cause damage. Feeding them once a year is usually enough to promote healthy blooms.

Indoor

For potted hyacinths, use a diluted liquid fertilizer when you see the first shoots appear. Feed them every two weeks until they start flowering. Once the flowers have bloomed, stop fertilizing.

Pruning

After the flowers have bloomed and faded, cut back the flower stalks to the base of the plant. This keeps the plant looking tidy and prevents it from putting energy into seed production. However, leave the green leaves intact until they turn yellow and die back on their own. The leaves help the bulb store energy for next year’s blooms.

Mulching

This process is crucial for protecting hyacinth bulbs during winter. Apply a 2-3 inch layer of organic mulch, such as shredded leaves or bark, after the ground freezes in late fall or early winter. This helps insulate the bulbs and retain moisture. Remember to remove the mulch in early spring once the frost danger has passed, allowing the hyacinths to sprout and bloom.

Potting

If you’re growing hyacinths indoors, start with a pot that’s 6-8 inches deep and has good drainage holes. Plant the bulbs with their pointed ends up and cover them with soil, leaving the tips slightly exposed.

Repotting

Indoor hyacinths grown in pots typically don’t need to be repotted for the same bloom cycle. However, if you want to reuse the bulbs next year, let the plant die back after it finishes flowering. Then, remove the bulbs from the pot, brush off excess soil, and store them in a cool, dry place until fall when you can replant them.

Overwintering

Outdoor

Hyacinths grown outdoors can usually handle winter on their own, especially in areas with cold winters. However, in regions with mild winters, you might need to dig up the bulbs after the leaves have died back and store them in a cool place (around 35-45°F) to mimic winter conditions. You can then replant them in the fall.

Indoor

Indoor hyacinths need a chilling period to bloom. After the flowers have finished blooming, allow the plant to die back naturally. If you plan to force them to bloom again next year, you’ll need to store the bulbs in a cool, dark place (like a refrigerator) for about 10-12 weeks before replanting them.

Hyacinth Pests and Diseases

Pests

Aphids

These are tiny, soft-bodied insects that can gather on the leaves and stems of hyacinths. They suck sap from the plant, which can weaken it and cause stunted growth or yellowing leaves.

  • Troubleshooting: To get rid of aphids, try dislodging them with a strong blast of water from a hose. For more serious infestations, reach for insecticidal soap or neem oil. You can also foster a healthy garden ecosystem to encourage beneficial insects like ladybugs, which are natural predators of aphids.
Bulb Mites

When bulbs are stored in damp conditions, these tiny pests can infest them. They can cause the bulbs to rot and prevent them from sprouting properly.

  • Troubleshooting: Before planting your bulbs, it's important to give them a good look-over and toss any that feel soft or show signs of mold. To keep mites away, make sure to store your bulbs in a cool, dry spot. If you do happen to see any pests, treat the soil with insecticidal powder before you put the bulbs back in.
Slugs and Snails

These can chew holes in the leaves and stems of hyacinths, especially in damp outdoor environments.

  • Troubleshooting: To protect your plants from slugs and snails, you can go out at night and pick them off by hand. Alternatively, try using slug bait or creating barriers around your plants with things like crushed eggshells or copper tape. Since slugs thrive in damp conditions, watering your plants in the morning will allow the area to dry out before nightfall.

Diseases

Gray Mold (Botrytis Blight)

This fungal disease causes gray, fuzzy mold to appear on the flowers, leaves, and stems of hyacinths. It often develops in damp, overcrowded conditions.

  • Troubleshooting: When you're planting your hyacinth bulbs, give them a bit of breathing room – this helps air flow between them and keeps things dry. Water the plants at the base, not from overhead, so the leaves stay dry. If you do see any mold, get rid of the infected parts right away to stop it from spreading to the rest of the plant. You can also try using a fungicide to help manage the mold issue.
Bulb Rot

A common issue caused by overly wet or poorly draining soil, this can cause the bulbs to become mushy and fail to sprout.

  • Troubleshooting: To prevent this in hyacinths, ensure your soil has good drainage before planting. You can improve drainage by mixing in some sand or organic matter if needed. Also, be careful not to overwater your hyacinths and make sure they're planted in a spot that doesn't stay too wet. If you notice any bulbs showing signs of this problem, dig them up and throw them away to keep the rot from spreading.
Yellow Rot (Sclerotium)

This is a fungal disease that affects hyacinth bulbs, causing them to turn yellow and soft. Plants may look weak and fail to bloom.

  • Troubleshooting: Before planting your hyacinths, take a close look at each bulb and make sure to only plant those that are healthy and firm to the touch. To avoid reinfection, try rotating the planting location every year. And if you do spot any signs of disease, remove and destroy the affected bulbs right away to protect the rest of your plants.

Harvesting Hyacinths

man with gloves harvesting hyacinth outdoors

While hyacinths are not typically "harvested," their flowers can be cut for indoor arrangements. If you’re cutting flowers, leave some leaves intact so the bulb can store energy for the following year. Cut stems early in the morning when blooms are fresh and immediately place them in water.

FAQs: Frequently Asked Questions

Q: When and how should hyacinth bulbs be planted in the fall?

A: For optimal growth, hyacinth bulbs should be planted in autumn. The best way to grow hyacinth flowers is to plant the bulbs about 6-8 weeks before the ground freezes. Hyacinth bulbs in autumn should be planted in fast-draining soil, and the depth depends on the size of the bulbs, generally 4-6 inches deep. Make sure to position the bulbs properly, with the pointed side facing up. Spring-blooming bulbs, like hyacinths, need a cold winter to develop properly, so planting them in fall ensures hyacinth blooms the following spring.

Q: Can hyacinths be forced to bloom indoors, and how is it done?

A: Yes. To learn how to grow hyacinths indoors, start by selecting prepared bulbs or pre-chilled bulbs. Plant your bulbs in pots or bulb vases filled with water, making sure to place the bulb just above the waterline. Growing indoors requires the bulbs to spend 10-12 weeks in a cold, dark place (around 40°F) before being moved to a sunny spot for blooming. Once hyacinths have finished blooming, you can discard the bulbs or plant them in the garden for future blooms.

Q: How do I care for hyacinths after they have finished blooming?

A: Once hyacinths have finished blooming, cut off the flower stalks but leave the foliage intact to allow the plant to store energy for the next season. For outdoor hyacinths, allow the leaves to die back naturally before you dig up the bulbs if you plan to move them. If growing indoors, you can either discard the bulbs or store them in a cool, dry place until fall when they can be replanted. Be sure to handle the bulbs after the foliage dies back carefully, as bulbs are toxic. Propagating hyacinths can be done by planting offset bulbs, which form naturally from the main bulb.

Related Articles

Related Articles

Best Flower Seeds to Plant in Fall
Easiest Flowers to Grow Indoors