This guide will take you on a step-by-step journey through the propagation of alocasia plants by division, offsets, and corms.
Alocasia, also known as Elephant Ear, has species such as Alocasia Polly, Alocasia Zebrina, and Alocasia Amazonica. Another alocasia species is the Alocasia macrorrhiza, which has large leaves in the shape of a stingray. These plants are popular houseplants and are prized for their ornamental foliage, which features large, tropical leaves with distinctive veining.
Propagating Alocasia houseplants can be done through root cuttings, stem cuttings, leaf cuttings, and corms. Root cuttings are taken from the parent plant’s roots and planted in potting soil, while stem cuttings are taken from the stem. Leaf cuttings involve taking sections of a healthy leaf and planting them. Corms are underground bulbs that can be harvested to produce new plants.
Alocasia plants, also known as elephant ear plants, are increasingly popular for their large, vibrantly colored leaves. While caring for an alocasia plant is relatively straightforward, knowing when and how to harvest it takes some finesse. In this comprehensive guide, we’ll cover everything you need to know about harvesting your alocasia plant successfully.
When is the Best Time to Harvest an Alocasia Plant?
Timing is crucial when harvesting an alocasia plant. The optimal time is during the plant’s active growing season in spring and early summer. At this stage, the rhizomes contain the most energy and nutrients to power new growth after dividing the plant.
Conversely, avoid harvesting in fall and winter when the plant becomes dormant. The rhizomes lack sufficient energy reserves during dormancy, increasing the risk of failure when propagating cuttings.
For best results, wait until the plant reaches maturity at 2-3 years old before harvesting. Immature plants shouldn’t be divided since they haven’t built up enough resources yet. Patience pays off with a mature, vigorous alocasia ready for harvesting.
How to Harvest an Alocasia Plant Step-by-Step
When the time is right, use these steps for harvesting alocasia plants successfully:
1. Remove Dead Leaves and Stems
Eliminate all dead or dying foliage before dividing the plant. This prevents disease or pests from impacting the healthy divided sections. Carefully trim off any affected leaves or stems with clean, sterilized scissors or shears.
2. Water the Plant Well
Make sure the plant is thoroughly watered 1-2 days before harvesting. This helps retain moisture in the soil and minimizes trauma to the root system when you divide it.
3. Dig Up the Root System
Use a garden fork or shovel to gently loosen the soil around the base of the plant. Carefully lift the entire plant out of the ground. Alternatively, you can remove it from its container if grown indoors.
4. Divide the Rhizomes
Locate the rhizome mass where new shoots and roots emerge Use a sterilized, sharp knife to divide the rhizomes into sections, each with roots and growth points intact Cutting through the rhizomes takes some force.
5. Prepare New Containers
Fill pots with a well-draining potting mix enriched with compost or worm castings. The containers should have drainage holes and be big enough to accommodate the divided rhizomes and root sections.
6. Plant the Divided Sections
Place each divided rhizome in its own container, partly burying it in the soil mix. Make sure the growing tips point upward. Gently firm the mix around the roots and water thoroughly after planting.
7. Provide Ideal Conditions
Keep freshly divided plants in bright, indirect light and high humidity like a greenhouse. Mist the leaves daily and water when the soil dries out. Fertilize lightly with a balanced liquid fertilizer once new growth appears. Transition to normal light levels and humidity as plants establish.
Troubleshooting Common Alocasia Harvesting Problems
Follow these tips to overcome potential issues with harvesting alocasia plants:
-
If rhizome cuttings fail to grow, the plant may have lacked sufficient energy reserves. Only divide mature, healthy plants at peak growing season.
-
Prevent root rot by using sterile tools and well-drained soil. Discard any mushy rhizomes or roots before replanting.
-
Slow growth after division indicates inadequate humidity and light. Boost both until new leaves unfurl.
-
If existing leaves yellow or drop after dividing, give more time to recover. Don’t overwater while establishing.
Caring for Newly Divided Alocasia Plants
With ideal harvesting techniques and aftercare, your new alocasia plants will quickly flourish. Remember these key tips for looking after freshly divided specimens:
-
Allow time to adjust to new containers before resuming fertilizing.
-
Mist frequently and maintain higher humidity while establishing roots and growth.
-
Ensure excellent drainage to prevent root rot in susceptible new plants.
-
Allow the soil to partly dry out before watering to avoid oversaturation.
-
Give plants 1-2 months to recuperate before exposing to direct sun.
-
Stake up drooping leaves while the new root system develops.
-
Repot again into larger containers as the rejuvenated plants grow.
Alternative Propagation Methods for Alocasias
Harvesting rhizomes is the primary technique for propagating alocasia plants. However, other options exist for multiplying your collection without dividing the parent plant:
Corms
Like mini rhizomes, corms sprout into new plants. Gently remove corms when repotting and propagate in sphagnum moss. Keep warm and humid until roots and shoots form.
Stem Cuttings
Take 5-6 inch stem cuttings below leaf nodes. Remove lower leaves and dip the end in rooting hormone. Place in moist potting mix under humidity until rooted.
Seeds
Pollinate the flowers by hand, harvest the resulting seeds, and sow them in starter trays. Maintain warm, humid conditions until seedlings emerge.
Tissue Culture
Specialized laboratories can micropropagate alocasias from tissue samples into identical clones. This is the most high-tech method.
The Rewarding Results of Proper Alocasia Harvesting
While it takes some gardening finesse, dividing alocasia rhizomes remains the most reliable way to propagate these stunning tropicals. With the right timing, techniques, and aftercare, you’ll be rewarded with multiple new elephant ear plants to enhance your indoor or outdoor space.
Just be sure to start with a mature, healthy parent plant, use sterile tools, provide ideal growing conditions, and avoid overwatering newly divided plants. Follow this guide’s step-by-step instructions for successfully harvesting your alocasias.
Can You Propagate Alocasia From Cuttings?
Alocasia can be propagated from root, stem, and leaf cuttings. Air layering is another tried and trusted method.
- Take root cuttings in the spring or fall.
- Plant the root cuttings in well-draining soil, about 2 inches deep and 6 inches apart.
- Keep the soil moist but not waterlogged.
- New shoots will emerge from the roots in 4-6 weeks, and new leaves will develop in 4-8 months.
- Use a pair of clean, sharp scissors, shears, or secateurs and cut a stem about 4 to 6 inches long, making sure to include at least two nodes (the places where leaves emerge from the stem).
- Remove the bottom leaves, leaving two to three at the top.
- Place the stem cutting in water or a well-draining soil mix.
- Keep the soil moist and provide bright, indirect light.
- Roots should form in 2-3 weeks, and new growth will emerge in 4 to 8 weeks.
- Remove a healthy leaf from the parent plant.
- Cut the leaf into 4 to 6-inch pieces, including a portion of the stem.
- Plant the leaf cuttings in a well-draining soil mix.
- Keep the soil damp and provide a bright, indirect light.
- New growth will emerge from the stem nodes in 4 to 8 weeks.
It’s important to note that the success rate of propagation from root and stem cuttings is usually higher compared to leaf cuttings. Additionally, it may take several months for new growth to emerge, so patience is key.
Air layering is another common method of propagation, and it involves cutting a small part of the stem and rooting it in water or soil while still attached to the mother plant. Once the roots have sprouted from the stem, they can be cut off and replanted.
How Long Does It Take To Propagate Alocasia?
The time it takes depends on the method used. Propagation through root and stem cuttings usually takes 4 to 8 months, while propagation through leaf cuttings may take longer. Propagation through corms may also take 4 to 8 months, although new shoots will emerge from the corms in 4 to 6 weeks. Propagation through water and a dome may be quicker, with roots forming in 2 to 3 weeks and new growth emerging in 4 to 8 weeks.
The success rate of propagation and the time it takes to see new growth can vary based on factors such as temperature, humidity, light, and soil moisture, so it’s important to provide the best possible growing conditions for the Alocasia cuttings or corms.
Step-By-Step BEST Way to Propagate Alocasia from Corms | Propagating Alocasia Bulbs (Corms)
FAQ
How do you pick Alocasia?
Where do you cut Alocasia leaves?
Can Alocasia be rooted in water?