The fertilizer Professor Sprout sells in the Hogwarts Shop is made from composted pitcher plants.

The Hogwarts family has a big business, and there are a lot of leftovers after every meal.

Therefore, Professor Sprout asked the house elves at Hogwarts to throw the remaining leftovers into the mouths of her compost pitcher plants after they finished their meals.

The house elves happily accepted Professor Sprout's instructions.

These compost pitcher plants are grown in Professor Sprout's special nutrient solution, with some branch and leaf debris added.

The house elves carefully put the remaining leftovers into the trapping cage of the compost pitcher plant, and at the same time used magic to collect the honey secreted by it. This was given to them by Professor Sprout, although they were very

I didn't want to, but I put it away anyway.

When they make some sweets, they will add these honey juices as appropriate.

After receiving praise from most young wizards, especially Dumbledore, they completely regarded it as a condiment.

Composting pitcher plants digest these leftovers, and after absorbing enough nutrients to grow themselves, they transport a large amount of remaining nutrients to their roots and then release them into the surrounding environment.

Due to Professor Sprout's design, the nutrients they release are directly dissolved in the nutrient solution.

As the viscosity of the solution continues to increase and there are some conjunctiva on the surface, the house elves will replace the nutrient solution inside.

The fertilizer-enhancing nutrient solution will be concentrated and sent to a greenhouse, where it will solidify into small particles of sand under the action of the simple magic pattern system. Finally, it will be packaged and sent to the storage room of the Room of Requirement.

When designing the Hogwarts toilets, Professor Sprout also discussed the collection of excrement with Professor Flitwick.

Subsequently, Professor Flitwick designed such a system based on Professor Sprout's needs.

The drainage system will uniformly deliver the collected things to one space.

In this space, its built-in system will screen the components of these excreta, remove some of the things that cannot be digested by the compost pitcher plant, and automatically store them underground.

Then, the excrement is simply processed to turn it into mince.

Then, the system will accurately feed these minced substances into the trapping cage of each compost pitcher plant.

These compost pitcher plants are in another location.

Professor Sprout designed it this way.

It was a large space, rectangular in shape, with a sunken floor, filled with nutrient solution, with an inlet and an outlet for inputting and removing nutrient solution respectively.

These shelves are placed in the nutrient solution, with composted pitcher plants placed on the shelves, and the roots are immersed in the nutrient solution.

The magic pattern system in this space will regularly locate the trapping cages of these composting pitcher plants, and accurately feed the minced excrement in the excrement space into their trapping cages.

The amount of feeding will also be changed according to the location and size of the trap. This is all based on the data provided by Professor Sprout.

However, no one collects the honey secreted by the composting pitcher plants, and it is allowed to fall into the trapping cage of the composting pitcher plants.

There is a passage at each end of the wall on one long side where it meets the ground. Driven by magic, one serves as an exit and the other serves as an entrance.

Under the action of composting pitcher plants, the nutrient solution gradually becomes thicker and flows into a large, deep pool through the outlet, which is the fertility separation tank.

The highly fertile and thicker nutrient solution, that is, the part with higher density, will sink to the bottom, while the less dense nutrient solution will be in the upper layer of the separation tank.

These less thick nutrient solutions will re-enter the fattening tank through another opening, the entrance of the fattening tank, and so on.

The Magic Line system will collect the fertilizing nutrient solution deposited below half the depth of the separation tank at regular intervals.

Moreover, if the nutrient solution level in the entire cycle is lower than a certain scale, the system will automatically add nutrient solution to it.

If the nutrient solution stored in the reserve pool is insufficient, the system will issue a reminder. The house elves who receive the reminder will immediately go out to replenish the nutrient solution in the reserve pool.

The entire cycle is conducted in darkness.

Professor Flitwick changed the lighting of the system so that the white light would only shine on the green part of the composted pitcher plant except the roots, and it would change over time, roughly simulating the natural lighting environment.

This greatly reduces mana consumption.

At the same time, the points that promote the circulation of nutrient solution are located at the exit and inlet. The outlet promotes the nutrient solution to flow from the fertilizer tank to the separation tank, and the inlet drives the nutrient solution to flow from the separation tank to the fertilizer tank.

There are also some places where it is easy to accumulate, and push points are set up.

Professor Flitwick did not allow the system to circulate the entire nutrient solution.

Although the space has been opened up, the magic pattern system has been drawn, and a protective layer has been applied, the compost pitcher plants have not been planted yet.

After all, Hogwarts is on vacation now, and there are not enough raw materials for them to digest, so it is not worth it to waste nutrient solution.

However, the system was successfully tested.

The testing site is in the Hogwarts Benevolent Store.

On the left side of the store, Hogwarts specially built a public toilet that can accommodate 10 people at a time and has a mature water delivery and drainage system.

This is where some of the fertilizers in the store come from.

This was the first public toilet in British wizarding circles.

After it opened, many wizards came to Hogsmeade Village not only to visit the Hogwarts store, but also to experience this public toilet.

Although it is a public toilet, the professors at Hogwarts have designed a special system for it.

The system will clean the toilet every 3 hours to keep it clean and tidy.

For 6 hours at night, the system will remain dormant and fully absorb the surrounding magic power to replenish the consumption of the magic pool.

Once these 6 hours have passed, the system will immediately enter the working state and be cleaned immediately.

Just a few days later, a customer came to Professor Sprout with a green crystal.

It turned out that one of her composting pitcher plants had withered and fallen, and there was a rather large green crystal inside.

Professor Sprout patiently explained the reason to her and told her that it would not cause much harm to the plants.

But the customer was still worried, so he bought a bag of fertilizer and gave the green crystal to Professor Sprout.

The professor held the crystal and shook his head slightly. Its crystallization was not complete, and some metallic color could be seen inside it. It should be the result of children's mischief.

Only completely crystallized green crystals have good value.

Crystals that are not completely crystallized can only be used as fertilizer.

Professors have also collected their ideas, but for the time being there is not much demand and there is a shortage of manpower, so there is no recycling.

Compared to the popularity of Compost Nepenthes among common wizards, Lampweed is quite popular among aristocratic wizards.

No, at Death Eater gatherings, lanterns were used for decoration and lighting.

Although everyone wears various masks and similar black robes, everyone knows each other's identities.

The wizard sitting on Voldemort's left hand side, everyone knows who he is without even thinking about it.

Who else but Lucius Malfoy could be trusted by their master?

"Master, are these decorative plants attractive to your eyes?"

Lucius said.

Many Death Eaters looked at the surrounding lights with envy, and some cast jealous glances directly at Lucius.

Lucius was even more dismissive of this.

Voldemort's eyes revealed some disdain as he glanced at the lanterns in the hall. They were both blue and white, and there were a lot of them. They were well matched and placed in a good location.

"It's really good as an accessory, but it lacks some practicality. Remember, strength is the foundation, and strength comes from our blood!"

Voldemort glanced at the people present and said that only a few people dared to look at him, and most people lowered their heads.

"Understood, my master."

Lucius said respectfully, putting away his hint of showing off before.

Sensing Lucius's change, Voldemort nodded.

This meeting is to test the purity within the Death Eater ranks.

Several Death Eater plans have been revealed before.

The first few times were fine. Not long after they started taking action, Aurors from the Ministry of Magic came to put an end to the problem.

However, as if he sensed that no one noticed anything was wrong, the traitor became more and more unscrupulous.

As a result, in several subsequent terrorist activities, Aurors ambush them in advance, causing them to turn pale and many of them injured.

"There seems to be something wrong with the purity of our team."

Voldemort stood up, turned sideways without looking at anyone, tapped his palm with his wand, and said.

Upon hearing this, some Death Eaters immediately agreed, and they were the ones injured in the plan.

"Why would anyone sympathize with Muggles who can't do any magic?"

Voldemort was walking around the hall, coming up behind a wizard from time to time, putting his slender, pale hands on his shoulders, lowering his head, and whispered in his ear:

"Would you sympathize with them?"

"No, these despicable mudbloods should be ruled by us!"

He trembled and said loudly.

"Yes! They are so filthy that magic hates them."
To be continued...