"So can I."

"Ah, perfect! Do fairies use that kind of magic a lot?" 

"Yes, we do a lot of foraging too but for anything from a different climate it's convenient to be able to grow it nearby."

"Neat! You have such useful magic." Leareth's people have in general been very impressed with sorcery, even if mage-gift or other Gifts can do a lot of the same things. 

"I like it."

Leareth joins them in the dining hall a few minutes later. "I hear your Gate is up! After I eat, would you be ready to open it again so I can attempt some scrying?" 

"Sure. I will also need to make a separate Gate at some point for getting fairy food plants, probably on the Valley Continent like originally planned, and I can start that one whenever it's convenient to again have people checking it."

"You may as well start that first, then, since it is likely to also take some time. I have plenty of staff who can rotate watching it." 

"Same room or a different one?"

"If fairy gates do not have any problematic interactions with each other in proximity, you might as well do another wall of the same room." 

"They don't, no."

"Then it seems convenient to be in the same room, in case it goes up unexpectedly fast and we need to call you over to close it and avoid suspicion." And Leareth heads back over to the Work Room with her, calling over the Farseer-Fetcher who's going to be actually getting them the tree branch. 

So she goes and puts up the gate over the Valley Continent on another wall of the room.

Once she's done that, and a mage is parked on a stool watching it with pebble in hand, Leareth is ready for their mission, map and drawing of her tree in hand. 

"Say when."

Leareth glances over at his Farseer-Fetcher, then back at Promise. "I am ready." 

She turns Leareth invisible, and opens the gate that leads to the air above the ocean.

Leareth cautiously braces his legs on the Work Room side, and leans his head and shoulders through the fairy gate, stretching out his magic-senses into another world. 

Fairyland is weirdly ambiently magical. Most of what he can see from here visually is ocean, though the ocean is weirdly sparkly and a deep peacock blue with brilliantly white foam. There is, straight ahead, the continent that must be Queenscontinent - the air's very clear and the world's very flat, so he can see it though it's hundreds of miles off, if indistinctly - and to his left he can see a floating island, hundreds of feet above the surface of the water, and to his right his view of the sea is interrupted by a violent lightning storm, miles away so he can see the full towers of the silver clouds zapping each other and the waves with lightning in a hundred colors. If he cranes his neck he can see sky, behind him, not himself or his facility.

Neat. And apparently no one in this world has mage-sight, so the gate and his magical aura wouldn't be a problem even if there were anyone within miles, which there isn't. 

Leareth saves asking about the various features for later, and instead attempts to scry in the direction indicated on the map - he doesn't actually know exact distance - and for the location shown in Promise's detailed drawing of her tree. He's got the power to scry at least a couple of thousand miles without strain, if he's doing it efficiently, and he can manage twice that distance if he's willing to really drain himself. 

About 2,500 miles west is Promise's tree.

Leareth thinks he can handle a Gate at that distance, knowing the exact direction and scrying the destination, but it's going to be very challenging and the Fetcher-Farseer will need to be efficient. 

Are there any sentries visible to mage-sight, whether or not they're visible to normal eyes? 

It transpires that there are not! Nobody is around her tree.

If he moves the scrying-site a mile closer to his current position, is anyone there? 

Yes, there's somebody - a little pink fairy - gathering flowers off a shrub.