Canna Terra Feed Chart: Vega, Flores and Additives by Week

By Tom Green, Greens Horticulture · 26 September 2026 · Updated 12 October 2026

The CANNA Terra feed chart for growing in soil: Terra Vega and Terra Flores doses week by week, when the additives go in, and the EC to aim for. It is CANNA's own schedule, set out so it reads on a phone. The Terra range is in our CANNA nutrients section, next to the soils it is made for.

CANNA Terra feeding schedule

CANNA gives every dose in ml per 10 litres of water, so divide by ten for ml per litre: 26-33 ml per 10 L is 2.6-3.3 ml per litre. EC is in mS/cm. EC water is what CANNA assumes your water starts at; EC total is the finished feed.

CANNA TERRA: doses in ml per 10 litres of water.
	Rooting		Vegetative		Generative (flowering)
	D1-5	D6-25	W1	W2	W3	W4	W5	W6	W7	W8	W9
Light hours	18	18	12	12	12	12	12	12	12	12	12
CANNA Terra Vega	32-49	45-62	54-71	54-71	–	–	–	–	–	–	–
CANNA Terra Flores	–	–	–	–	57-76	57-76	57-76	57-76	57-76	34-53	–
CANNA Rhizotonic	40	20	20	20	5	5	5	5	5	–	–
CANNAZYM	–	25	25	25	25	25	25	25	25	25-50*	25-50
CANNABOOST	–	–	20	20	20-40**	20-40	20-40	20-40	20-40	20-40	20-40
CANNA PK 13/14	–	–	–	–	–	–	–	15	–	–	–

EC by week

CANNA TERRA: EC in mS/cm.
	Rooting		Vegetative		Generative (flowering)
	D1-5	D6-25	W1	W2	W3	W4	W5	W6	W7	W8	W9
EC water	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4
EC nutrition	0.8-1.2	1.1-1.5	1.3-1.7	1.3-1.7	1.3-1.7	1.3-1.7	1.3-1.7	1.7-2.1	1.3-1.7	0.8-1.2	–
EC total	1.2-1.6	1.5-1.9	1.7-2.1	1.7-2.1	1.7-2.1	1.7-2.1	1.7-2.1	2.1-2.5	1.7-2.1	1.2-1.6	0.4

Notes from CANNA

* Double CANNAZYM to 50 ml per 10 L if you are reusing the substrate.
** CANNABOOST can go up to 40 ml per 10 L through flowering for extra strength.
For a longer growth phase, repeat the rooting period II doses (days 6-25). For a longer flowering phase, repeat the generative phase I doses (weeks 3-5).
PK 13/14 goes in for one week, 3-4 weeks before harvest.
The schedule is written for plants that flower or fruit, starting from a cutting or seedling about a week old. How long each phase lasts depends on the plant.

Using the chart in soil

Terra Vega is the growth feed and Terra Flores the flowering feed: you use one or the other, never both in the same week.
Soil holds on to food, so water until a little runs out of the bottom of the pot and let the top dry a little before the next feed.
Add the base feed first, then each additive, stirring between each, and check the EC and pH last.
A good soil gets you off to a better start: see CANNA Terra Professional Plus and our premium soils.

What you need

CANNA Terra Vega & Flores - the base feeds for soil.
CANNA Rhizotonic, CANNAZYM, CANNABOOST and CANNA PK 13/14 - the same additives as the coco schedule.
pH and EC meters to check each feed.

Quick answers

What is CANNABOOST and how is it different from PK 13/14?

CANNABOOST is a flowering stimulator (its page calls it a sugar stimulator), used at 2-4 ml per litre; this chart has it in every week from W1, the first week on 12 hours of light, to W9. CANNA PK 13/14 is a concentrated phosphorus and potassium feed that goes in for one week only: 15 ml per 10 litres in W6, 3-4 weeks before harvest. This chart uses both, and our CANNABOOST page says that for significant increases in yield you will need a PK booster such as PK 13/14 as well. Our PK boosters guide compares the two with other boosters we sell.

How much CANNABOOST per litre?

Between 2 and 4 ml per litre, the CANNABOOST page says. This chart gives 20 ml per 10 litres (2 ml per litre) in W1 and W2, the first two weeks on 12 hours of light, then 20-40 ml per 10 litres (2-4 ml per litre) from W3 to W9: CANNA say it can go up to 40 ml per 10 litres for extra strength.

More feed charts

Not sure which feed or how much to buy? Call the shop on 0117 971 3000 or pop in to the Bristol store and we'll help you pick.

Source: CANNA TERRA grow schedule, version V25.01. Always check the label on your bottle and adjust for your plants, your water and your room.