Macrophylla Citrus for Sale
High-grade Macrophylla Rootstock Seedlings for Nurseries, Growers, and Commercial Distributors
TreeSource has been producing and distributing Macrophylla rootstock for 25 years, supplying commercial nurseries, growers, and distributors with uniform, high-performing seedlings. Our dedication to ensuring consistency and preventing contamination demonstrates our commitment to providing top-quality citrus grafting products.
Each seedling is produced under controlled greenhouse conditions using certified seed and standardized propagation methods to promote even growth, strong root systems, and successful graft unions. We take pride in supporting the growth and success of commercial citrus trees through our rootstock seedlings, providing the foundation for healthy, productive orchards.
Whether you’re establishing new lemon acreage or sourcing rootstock for nursery propagation, TreeSource offers Macrophylla seedlings grown with precision, care, and industry-leading expertise. Fill out our contact form or call our knowledgeable sales team to learn more about our Macrophylla rootstock seedlings.
Meet Our Macrophylla Citrus for Rootstock
Macrophylla Rootstock Seedlings: Product Overview
Macrophylla rootstock is one of the most important rootstocks worldwide. While the parentage of the macrophylla (alemow citrus) is unknown, experts suspect it to be a hybrid of a papeda citrus and a pomelo, originating from the island of Cebu in the Philippines. First given to the University of California Citrus Variety Collection (CVC) in 1930, Citrus Macrophylla rootstock is maintained and distributed through the CVC and clean-plant programs such as the Citrus Clonal Protection Program (CCPP).
Known for its vigor, early, rapid growth, and strong compatibility with lemons, Macrophylla rootstock is beneficial for commercial orchards seeking rapid canopy growth and earlier fruit yields. It is generally tolerant to Citrus Tristeza Virus (CTV), but lacks tolerance to Huanglongbing (HLB) and Phytophthora. Since Macrophylla rootstock is susceptible to root diseases, it does best in well-drained soil, where excess moisture does not gather around the roots. TreeSource works closely with growers to help evaluate site conditions and determine whether Macrophylla is the right choice for their specific operation.
How It Works: Buying Our Macrophylla Rootstock Seedlings
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Macrophylla Citrus Rootstock FAQs
What soil types does Macrophylla do best in?
Providing adequate drainage for Macrophylla rootstock is essential for long-term tree health and performance. Considering it is sensitive to Phytophthora root and crown rot, it is best to minimize chronically wet soil to avoid diseases and promote healthy roots. Light-textured soils such as sandy or well-structured loamy soils are ideal, as they promote proper water movement and oxygen availability around the root system. These soil types help prevent standing water while encouraging strong root development and nutrient uptake.
In addition to soil that drains well, commercial growers should use raised beds or berms to help avoid disease contamination and ensure air circulation. Raised beds also help separate the root system from potential soil-borne pathogens, making it easier to manage irrigation and minimize disease spread in commercial orchards.
Does Macrophylla perform best with lemons only, or can it be used with oranges, mandarins, or grapefruit?
Macrophylla is most compatible with lemon scions such as Eureka and Lisbon, forming strong unions, resulting in early flowering, fruiting, and rapid growth. These characteristics are what make Macrophylla a great choice for commercial lemon production.
While technically Macrophylla can be used for other citrus trees such as oranges, grapefruit, and mandarins, commercial growers do not use this combination. The rootstock’s susceptibility to diseases like Citrus Tristeza Virus poses a risk to non-lemon trees. Along with the increased possibility of disease, the combination may decrease vigor and lower production.
For these reasons, commercial growers typically reserve Macrophylla specifically for lemon production, while selecting alternative rootstocks better suited for oranges, mandarins, or grapefruit. Choosing the correct rootstock-scion pairing is critical to orchard success and yield performance.
What steps do you take to guarantee high-quality and uniformity of Macrophylla rootstock seedlings?
To ensure premium Macrophylla rootstock seedlings, we extract from healthy seed trees that are certified by the California Division of Food and Agriculture (CDFA). Our seeds are heat-treated and dipped in fungicide and then packaged in heat-sealed bags to prevent contamination while they are stored.
Once planted, seedlings are grown inside TreeSource’s dedicated rootstock greenhouses, where environmental conditions are carefully managed to promote even germination and consistent growth rates. Standardized containers and uniform irrigation help ensure each plant receives the same moisture and nutrients throughout development.
What is the process and precautions you take when shipping Macrophylla rootstock seedlings for commercial orders?
Macrophylla rootstock seedlings are shipped according to the highest quality standards, including:
- Packaging seedlings in heavy-duty, triple-wall cardboard cartons for enhanced transit protection.
- Removing cone liners, which are cleaned and reused in alignment with TreeSource’s sustainability practices.
- Wrapping the root system to maintain moisture and reduce stress during transport.
- Incorporating an ethylene-absorbing liner to help preserve plant quality in transit.
For winter shipments or deliveries to colder regions, additional safeguards are implemented:
- Scheduling shipments early in the week to minimize delays and reduce overall transit time.
- Thoroughly hydrating seedlings prior to departure to help maintain stable conditions.
- Closely monitoring weather conditions and adjusting shipment timing when extreme cold presents a potential risk.
As a result, most Macrophylla rootstock orders are suitable for UPS Ground delivery, with expedited shipping used only when conditions require additional protection.