Passiflora edulis, the yellow grenadilla
While most plants in the Passifloraceae family are cultivated for their original flowering, Passiflora edulis is also appreciated for its fruit. Native to Argentina and Brazil, this variety, also known as yellow pomegranate, produces the maracuja, a berry with juicy, tangy flesh.
How to recognize Passiflora edulis, the yellow pomegranate?
A climbing shrub with a very spreading habit, Passiflora edulis can exceed ten meters in height and four meters in spread.
The woody stems can reach six meters in length. Voluble, they hang from tendrils at the base of the leaves.
The glossy, thick leavesare medium green. They are webbed, with three serrated, ovoid blades. They measure up to 20 centimetres. In its natural habitat, Passiflora edulis foliage is evergreen. But in regions with colder winters, the leaves fall off as temperatures drop below zero.
Flowering takes place in summer. Solitary flowers bloom in the leaf axils. Their white petals are almost hidden by a crown of purple or violet filaments. Stamens and a pistil with three stigmas stand out in the center.
The yellow grenadilla is not only cultivated for its graphic inflorescence. It gives rise to a fleshy, ovoid fruit known as maracuja. Its yellow skin and more acidic flavor distinguish it from the passion fruit produced by violet Grenadilla (Passiflora edulis f. Edulis).
The fruit is edible, but the rest of the plant is toxic if ingested. Leaves and stems can cause digestive disorders in animals.
Our maintenance tips
Would you like your Yellow grenadilla to bear fruit? You may need to grow several specimens. Some self-sterile varieties need to be planted alongside others yellow Grenadilla for pollination to take place.
Watering
Your Yellow grenadilla likes humidity. The plant appreciates frequent and generous watering. But its roots may rot if you overwater. To get the dosage right, leave the soil to dry out partially between two waterings (by about a centimetre). The substrate should always remain slightly moist.
After each watering, remove any stagnant water from the saucer or planter to avoid drowning the roots.
Repotting
Yellow Grenadilla are fast-growing. Choose a pot with holes at least 40 centimetres deep to give the plant room to develop its root system. You can line the bottom with a layer of clay balls or gravel to improve drainage.
Your plant needs a rich, draining substrate. You can mix equal parts topsoil and potting soil and add a handful of compost and sand. If you don't have any, a mixture for Mediterranean plants is also suitable.
Pour substrate into the hole. If you have provided a stake, install it in your pot now. Plant your Yellow grenadilla. The collar and root ball should be a few centimetres below the rim of the pot to leave a watering trough. Add potting soil up to the root ball. Tamp and water.
Your plant will cling to its support itself thanks to its tendrils. But you'll need to give it a little help when planting. Arrange the vines in a zigzag pattern along your wall, pergola or fence.
Fertilization
Place compost at the foot of your Yellow grenadilla.
You can stimulate the growth of your plant during its growth phase, in spring and summer, with fertilizer.
Fertilize your Yellow grenadilla every month. Use a flowering plant fertilizer to stimulate flowering.
Harvest
Depending on the variety, fruit is harvested between early and late summer.
Fruit falls by itself when ripe.
Prune
Remove dry, yellowed leaves.
Using clean, sharp pruning shears, cut back dead branches.
You can also shorten branches to maintain a compact habit.
Plantation
Once the last spring frosts have passed, you can plant.
Soak your Passiflora edulis to rehydrate the root ball.
The plant has extensive roots. Dig a hole of at least 40 centimetres in all directions to accommodate it. If your soil is heavy and tends to retain water, place two to three centimetres of clay balls or gravel at the bottom to improve drainage.
Prepare a mixture containing equal parts garden soil and potting soil. Add a handful of compost. Pour on a layer of substrate and plant your plant. The rootball should reach ground level.
Fill in the hole, compact and water. You can mulch with a mineral or organic material to keep the plant cool.
Yellow Grenadilla plants have tendrils at the base of their leaves, enabling them to hang on. Planted next to a low wall, trellis or pergola, your plant will climb naturally. But you can encourage it by guiding its vines along the support. It's best to run them in a zigzag or horizontal pattern to stimulate growth.
Cutting
Cutting is carried out during the strong growth phase, generally in spring and early summer.
Choose a stem with a soft tip and no flowers. Using a clean, sharp pair of pruning shears, remove a section of about fifteen centimetres with at least three nodes.
Remove the leaves at the base of the plant, keeping only the pair at the top. You can tie up the leaves or halve their size to limit evapotranspiration.
Pour a mixture of potting soil and sand into a pot whose hole has been plugged with a pebble. Push half the stem of your cutting into the center without watering.
Place the pot in a mini greenhouse; if you don't have one, you can cover the plant with a translucent bag or a cut bottle. Place your graft in a bright spot, without direct sunlight.
Every day, aerate for a few minutes to drain off condensation and mist.
Every day, aerate for a few minutes to drain off condensation and mist.
Diseases / Threats
Information
Family | Passifloraceae - Passifloraceae |
Type | Passionflower - Passiflora |
Species | Passiflora edulis - Passiflora edulis |
Lifecycle | Perennial |
Foliage | Semi-evergreen |
Exposures | |
Substrats | |
Planting methods |
Open ground In pots In tubs |
Categories | |
Tags |
Edible fruit Beginner Flowery Toxic |
Origin |
South America |
Hardiness (USDA) | 10b |
Leaf color |
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Flower colors |
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Fruit color |
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