Early Flowering

[Bugeye]

I've got a 7 foot blueberry from dutch passions that started budding 2 weeks ago in my natural light greenhouse, about 6 weeks earlier than expected. I don't add any lights or interrupt the natural daylight cycle. 5 other plants in same greenhouse are vegging as expected. Anybody seen this before?

Here's what I know:
plant should not have any ruderalis in it, and I've never heard of a 7 foot rud. Pure organic grow started in Roots Organic Soil and now in a huge 2 cubic meter dirt bed fully charged with compost and super soil. Rainwater has 18 PPM TDS, ph 6.7. Shares bed with one other plant that is vegging great. The color of the plant looks very healthy with no signs of nutrient deficiencies. Started from seed on 4/1. Had the look of sativa pheno but is now filling in like indica.

I'm not going to change a thing at this point but curious what to expect. I'm glad the plant looks super healthy but I've still got a bad feeling about quality as I've never seen this!

Thanks for any comments! I'm happy to post more details if you have any questions.