Grandmommy Purple Grow Diary and Strain Review

This run with Grandmommy Purple from Herbies Seeds was never about chasing the biggest jar. I wanted to make a bonsai-style plant and see how much shaping this genetics could take without falling apart.

The plan was pretty unusual from the start: a small container, exposed roots, topping, defoliation and LST. Later, I also used a decorative mask as part of the structure. It sounds like too much stress on paper, but the plant handled the whole project calmly.

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Grandmommy Purple (Herbies Seeds)

• Photoperiod
• An ecstatic must-have
• 400 - 500 g/m² indoors
  450 - 550 g/plant outdoors

Pack (number of seeds)

1

3

5

10

$19.87 $53.64 59.6 Save 5.96 $84.45 99.34 Save 14.89 $129.14 198.68 Save 69.54

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Starting the Run

Week 1-3

For the first stretch, I deliberately used a very small pot. In a normal grow, I’d want more root space, but the bonsai idea needed the roots to spread wide instead of diving deep.

Grandmommy Purple stayed compact and steady. There wasn’t much to correct in these first weeks, so I mostly watched the structure form and kept the plant moving at its own pace. The early goal was not speed. I needed a root base that could work with the design later.

Week 4-5

By week 4, the plant was still small, but it was time to move it into the next setup. I transplanted Grandmommy Purple into a 7l (1.8gal) pot, then placed it inside a smaller ceramic vessel with a glass sphere and a tiny LED under it.

The root result was exactly what I wanted. Instead of long, deep roots, the plant had made a short, wide root system. That gave the whole project a proper bonsai foundation and made the next training steps feel less like a gamble.

Veg Progress and Training

Week 6-9

After another couple of weeks, Grandmommy Purple was ready for the more serious shaping. I topped the plant and removed almost all of the foliage and growth points, leaving only the 2 upper sites.

Then came the mask. I fixed a Venetian-style carnival mask above the trimmed plant so both tops had only one direction to go: through the eye openings. It was a strange setup, but it worked better than I expected.

In week 7, I removed the upper ceramic vessel with the glass sphere. The roots had wrapped around it well and were strong enough to keep developing in the open. That was one of the key moments of the whole bonsai idea.

Week 10-13

The plant kept adapting to the shape instead of fighting it. I continued the careful training, trying to keep the design clean without pushing the plant past the point where it could recover.

At this stage, the project finally started looking like the tree I had imagined. The roots were visible, the 2 main tops had a clear path, and Grandmommy Purple still looked surprisingly comfortable after all the handling.

The Flip and Early Flower

Week 14-17

Once the plant moved into flowering, the structure started to make more sense. Instead of a normal bush, I had 2 main colas growing out of the mask, with exposed roots underneath and a clean little trunk between them.

Flowering didn’t start with any dramatic problems. Grandmommy Purple stayed calm, which honestly surprised me a little after all the trimming and shaping. The buds were still modest at first, but the form of the plant was already set.

Week 18-22

As flowering went on, the leaves turned very dark green. I took that as a likely sign of too much nitrogen, which isn’t ideal at this stage, but the plant didn’t act upset about it.

About a month after switching to 12/12, the buds were already covered with trichomes. The stigmas also started changing toward orange, so the plant was clearly moving through flower even though the foliage color wasn’t perfect.

Late Flower and Finish

Week 23-25

After 7 weeks of flowering, the plant had turned into 2 thick colas packed with buds. During the last stretch, the flowers kept swelling while the older leaves slowly faded and died off.

One thing did surprise me: I never got the purple color I had expected from Grandmommy Purple. Visually, the plant looked closer to a white variety because of how heavy the trichome coverage became.

Even with that small disappointment, I liked the finish. The bonsai shape held together, the flowers looked dense, and the plant had made it through a lot of manipulation without turning fragile.

Grandmommy Purple Yield and Final Thoughts

Yield was not the main target, but after trimming, manicuring and drying, I still got 46.58g (1.6oz) of finished buds. For a bonsai-style run, that was more than enough to make the project feel worth it.

The quality pleased me as much as the plant’s stress resistance. The taste was sweet and earthy, with a noticeable herbal side in the background.

The effect started with a cerebral high, but it moved into the body pretty quickly. After that, it settled into a clear stone that felt much stronger than the size of the little bonsai tree suggested.

Grandmommy Purple turned out to be a good choice for this kind of grow experiment. I didn’t get the purple look I had hoped for, but I did get a sturdy, unusual plant that took topping, defoliation, LST and exposed-root styling without much complaint.

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